Emerson Fisher 377 Instruction Manual
Contents
1. W A 0 2 7e A 7 NN 7 ER TO d 7 p f N Es n J J Ne aE aN Rp je 0 ANS a vA Tt me NN 1g SSS A TIEKE N ko Eg SSN SBS AA TT MES LL Ta a E ZAP aN GN Po d Ve 6 fi OS NSS ES D TIENIE 5 SX 9 OF TS OF oF J J J J J Ta NOTE KEY NUMBERS 7 20 30 33 36 37 64 65 76 78 79 80 88 NOT SHOWN APPLY LUB GE51600 A STAINLESS STEEL CONSTRUCTION Bi SOOM SE O OE Instruction Manual D200319X012 Figure 10 Trip Valve Assembly AN ASS Han SES SERE e I SNS NI Zaks URUUL YUU ss Cars ANAT 1 ays 5 ff ar ea NEAL 7 LAS fd 0 dIE sa SEE ET A ay 1 dl 4 H 2 21 SSS x 5 on Woo vere SSS O O O Q AHD O OO CO aut Sa a fale 41 R NOTE KEY NUMBERS 7 20 64 65 76 78 79 80 88 NOT SHOWN ALUMINUM CONSTRUCTION APPLY LUB 377 Trip Valve Instruction Manual July 2014 D200319X012 Neither Emerson Emerson Process Management nor any of their affiliated entities assumes responsibility for the selection use or maintenance of any product Responsibility for proper sele2. 2 Inspect the upper and lower O rings keys 23 and 26 for nicks or wear If the lower O ring needs to be replaced remove the O ring retainer screw key 27 before installing the new O ring The upper O ring simply slips over the end of the stem key 22 Lightly lubricate O rings key 77 prior to reassembly 3 Inspect the stem plug assemblies inspect the valve seats in the body key 21 and replace any parts if necessary 4 When stem plug assembly maintenance procedures are complete carefully slide the stem plug assemblies keys 22 23 24 26 and 27 and springs key 25 into the body Attach the manifold key 73 to the bottom of the body key 21 and tighten the screws key 76 5 Refer to the installation and calibration procedures Instruction Manual 377 Trip Valve D200319X012 July 2014 Parts Ordering When corresponding with your Emerson Process Management sales office about this equipment always refer to the trip valve serial number which is located on the nameplate Refer to table 2 for common parts Contact your Emerson Process Management sales office if part numbers are needed A WARNING Use only genuine Fisher replacement parts Components that are not supplied by Emerson Process Management should not under any circumstances be used in any Fisher trip valve Use of components not supplied by Emerson Process Management may void your warranty might adversely affect the performance of the instrument and could caus
3. 377 trip valve is shipped separately from the control valve assembly the installation procedure depends upon the type of actuator and accessory equipment required for the individual control valve system Install any accessory equipment in the control valve system so that the overall functioning of the specified trip valve pressure line connections is not disrupted Figures 7 8 and 9 are schematics showing the pressure line connections for each of the three possible fail mode configurations of the trip valve CAUTION 377 trip valves are leak tested to ensure that the intended actuator fail mode is maintained upon loss of supply pressure Control system accessories such as volume boosters with hard seats compromise the integrity of the entire system due to leakage Therefore using control system accessories such as volume boosters between the trip valve and the actuator is not recommended If this cannot be avoided and a volume booster is required a volume booster designed for tight shutoff such as the Fisher 2625 provides a higher probability of control system integrity Refer to figures 5 and 6 for proper installation of 377 trip valves with 2625 volume boosters Figure 5 Fisher 2625 Volume Booster used with 377U or 377D Trip Valve 1 2 O D TUBING r INPUT SIGNAL 1 2 O D COIL VOLUME 2625 6 TUBING 3 4 NPT OR 1 2 NPT PIPING PISTON ACTUATOR FISHER i2P 100 67CFR 3 8 O D TUBING TYPICAL POSITIONER
4. Position Respective cylinder pressure Trip Point 2 Adjustable from a minimum of 2 8 bar 40 psig to a maximum of 72 percent of supply pressure see figure 4 Reset 12 5 to 33 percent above adjusted trip point Flow Coefficients CJ Depends on flow path shown in figure 3 as follows Port A to Port B and Port D to Port E 0 5 Port B to Port C and Port E to Port F 0 6 377 Trip Valve Instruction Manual July 2014 D200319X012 Table 1 Specifications continued Declaration of SEP with Sound Engineering Practice SEP and cannot Fisher Controls International LLC declares this bear the CE marking related to PED compliance product to be in compliance with Article 3 paragraph However the product may bear the CE marking to 3 of the Pressure Equipment Directive PED 97 23 indicate compliance with other applicable European EC It was designed and manufactured in accordance Community Directives 1 The pressure temperature limits in this document and any applicable standard or code limitation should not be exceeded 2 Ifthe trip point is not specified the trip point is factory set at 72 percent of supply pressure or 2 8 bar 40 psig whichever is higher 3 Values represent nominal C measures for each port pair using a trip valve actuator combination Figure 4 Maximum Trip Point Settings SUPPLY PRESSURE BAR 10 3 4 5 6 7 8 9 10 TTT 1 100 2 2 90 ee 6 E LE 80 2 O 0 A 6 a 70
5. engineer for any additional measures that must be taken to protect against process media Periodic Operational Check A WARNING The following procedure requires taking the trip valve out of service To avoid personal injury and property damage by uncontrolled process medium provide some temporary means of control of the process medium while the trip valve is out of service _ Isolate the actuator valve assembly from the process loop Provide a means of monitoring the supply pressure input to the trip valve Starting with normal supply pressure applied to the trip valve slowly reduce the supply pressure until the trip valve trips The trip valve should trip at the pressure set during the calibration procedures Increase the supply pressure until the trip valve resets This should occur at a supply pressure 12 5 to 33 percent above the trip point If the trip valve fails to trip and reset at the calibrated settings refer to the calibration procedures If the trip valve will not calibrate continue with the following maintenance procedures Wd N Oo Ul Trip Valve Part Replacement Procedures A WARNING Refer to the WARNING at the beginning of the Maintenance Section in this instruction manual Isolate the control valve from the line pressure release pressure from both sides of the valve body and drain the process media from both sides of the valve If using a power actuator also shut off all pressure lin
6. installation operation and maintenance To avoid personal injury or property damage it is important to carefully read understand and follow all of the contents of this manual including all safety cautions and warnings If you have any questions regarding these instructions contact your Emerson Process Management sales office before proceeding Description 377 pressure sensing trip valves shown in figures 1 2 and 3 are for control applications where a specific valve actuator action is required when supply pressure falls below a specific point When supply pressure falls below the trip point the trip valve cause the actuator to fail up lock in the last position or fail down When the supply pressure rises above the trip point the 377 trip valve automatically resets allowing the system to return to normal operation The trip valve can be top mounted on a manifold yoke mounted or bracket mounted to match the application requirements 377 trip valves are used with all types of piston actuators EMERSON www Fisher com Process Management Instruction Manual D200319X012 Figure 3 Simplified Sectional View of Trip Valve ae UPPER DIAPHRAGM PLUG SPRING der EXHAUST supply gt M PORT CONNECTION LOWER DIAPHRAGM RESTRICTION PORTD WN PORTA PORTE PORTB PLUG ASSEMBLIES W4303 1 377 Trip Valve July 2014 Figure 2 Typical Fisher 377 Trip Valve W4292 1 Specifications Specifications fo
7. two ASME approved volume tanks or one ASME approved volume tank w o 2625 OO wo N A For one ASME approved volume tank w o 2625 Volume tank tubing Copper 5730 For one ASME approved volume tank w 2625 7 6 m 25 foot coil Pipe nipple 1 40 D Nitrile Nitrile Fluorocarbon a rbon For two standard volume tanks w o 2625 For two standard volume tanks w 2625 or 1 2 0 0 Pipe cross for two ASME approved volume tanks only 63 O ring use w manifold assembly Stainless steel Stainless steel Screen not shown For top mounted 377D 377U 377L 377CW and 377CCW 2 req d For 377D 377U 377CW or 377CCW with speed control valve 1 req d Oo 1 Included in Repair Kit continued 377 Trip Valve Instruction Manual July 2014 D200319X012 Table 2 Common Parts continued PART MATERIAL KEY QUANTITY z 5 Trip Val t NUMBER DESCRIPTION REQUIRED rip Valve Construction Stainless Steel Screen not shown For boss mounted 377D 377U 377CW or 377CCW Stainless steel Stainless steel Stainless steel Stainless steel Alea CF3M SST casting 316L SST cast Nitrile Nitrile Fluorocarbon Fluorocarbon Spring retainer spacer use w manifold assembly not shown Ole o mi aa 76 Travelstop Piste EE ae Silicone based lubricant not furnished with trip valve Cap Screw not shown Bracket mounted PI steel Stainless steel PI steel Stainless steel PI steel Stainle
8. ES E1571 Supply Pressure Requirements A WARNING Severe personal injury or property damage may occur if the instrument air supply is not clean dry and oil free While use and regular maintenance of of a filter that removes particles larger than 40 micrometers in diameter will suffice in most applications check with an Emerson Process Management field office and instrument industry air quality standards for use with corrosive gas or if you are unsure about the proper amount or method of air filtration or filter maintenance A supply regulator if used must have a flow capacity greater than the required combined capacity of the trip valve and actuator In order to ensure proper selection of a supply regulator be sure the C value of the regulator is greater than the appropriate flow path C value listed in table 1 for the trip valve A regulator with insufficient capacity may allow supply pressure to droop which can cause the trip valve to trip again and begin a trip reset cycle An example of an appropriate supply regulator to use with a 377 trip valve is a 64 regulator its capacity is usually great enough to meet the demands of most trip valve actuator combinations Determine the requirements of your trip valve actuator combination for proper selection of a supply regulator Instruction Manual 377 Trip Valve D200319X012 July 2014 Note During normal operation an adequately sized supply regulator maintains a greater suppl
9. Instruction Manual 377 Trip Valve D200319X012 July 2014 Fisher 377 Trip Valve Contents Figure 1 Fisher 377 Trip Valve Mounted on Size 130 INGOGUCTION SERE nies 1 2850 80 Scope of Manual EE ii 1 DESCHPUOM serere 1 Specifications cece cc cece eee ees 2 Educational Services 000ee cee cece 2 SEAN Sate EE oe 4 Supply Pressure Requirements 6 Operating Information 8 C DEION sai ste CDSE aed alates 8 Principle of Operation ss ss ss ee eee 9 JID TAP Valie asse EE ES ED ER 9 SALTA RES NA EIE 10 AL Trip ValVer sr 3 0 SE ORDE SE saint 11 Maintenant Ensis CSO STL OSES 12 Periodic Operational Check 13 Trip Valve Part Replacement Procedures 13 Replacing Diaphragms and Valve Plug Parts 13 Replacing Stem Plug Assembly Parts 14 Parts Ordering ives dae DE 15 000010011 15 PARS SR SR a OE EE 15 ek Introduction Scope of Manual This instruction manual provides installation operation maintenance and parts information for the Fisher 377 trip valve Refer to separate instruction manuals for information regarding the control valve actuator and accessories Do not install operate or maintain a 377 trip valve without being fully trained and qualified in valve actuator and accessory
10. NTROL PRESSURE TO TOP BOTTOM OF CYLINDER BLOCKED LOWER DIAPHRAGM LOADING PRESSURE BEING VENTED GE08414 A A6906 1 377U Trip Valve Figure 9 illustrates trip valve operation in the fail up mode The fail up mode of operation is similar to the fail down mode of operation except that the connections to port C and F are reversed When supply pressure falls below the trip point the top of the actuator cylinder vents and volume tank pressure loads the bottom of the actuator cylinder The pressure imbalance created forces the actuator piston up 11 377 Trip Valve Instruction Manual July 2014 D200319X012 Figure 9 Fisher 377U Trip Valve Shown in Tripped Condition ee MAIN SPRING SPRING VALVE PLUG UPPER DIAPHRAGM CONTROL DEVICE EXHAUST PORT SBS SUPPLY lt Ss PRESSURE LOWER DIAPHRAGM ETE 2009000 ECE 559505555 eee PORT D PORTE EE T T E vs a ee ee MR n A LOWER PORTS A PORT F zal VOLUME PORT C TANK SUPPLY PRESSURE NN L CONTROL PRESSURE TO TOP OF CYLINDER BLOCKED LDA CONTROL PRESSURE TO TOP BOTTOM OF CYLINDER BLOCKED ES LOWER DIAPHRAGM LOADING PRESSURE BEING VENTED Maintenance Trip valve parts are subject to normal wear so the trip valve must be actuated periodically to determine if it is working properly If the trip valve does not work properly us
11. Reset the control device for normal operation Principle of Operation 377D Trip Valve Figure 7 illustrates trip valve operation in the fail down mode In normal operation supply pressure loads the upper diaphragm of the trip valve The valve plug spring keeps the exhaust port closed Supply pressure also loads the lower diaphragm through the restriction causing the plug assemblies to move down and isolate ports C and F while connecting port A to B and port D to E Normal actuator control pressure from the control device is applied to the top of the cylinder through ports A and B and to the bottom of the cylinder through ports D and E Avolume tank is charged to the maximum supply pressure through a check valve The check valve maintains maximum supply pressure in the volume tank if the supply pressure drops When the supply pressure falls below the trip point the exhaust port opens venting the supply pressure that is loading the lower diaphragm This causes the upper ports of the plug assemblies to close and disconnect normal pressure from the control device to the actuator Volume tank pressure is then applied through ports C and B to the top of the actuator cylinder while pressure in the bottom of the actuator cylinder is vented through ports E and F The pressure imbalance created forces the actuator piston down When supply pressure is restored it again loads the upper and lower diaphragms causing the trip valve to reset The exhaust po
12. S31603 fluorocarbon 530200 302 ST Nitrile Nitrile Fluorocarbon Fluorocarbon 3030 303557 O ring top mounted only Nitrile Nitrile oe Fluorocarbon Fluorocarbon Plug assembly Cap screw top mounted 1 Pl steel Stainless steel yoke mounted 1 bracket mounted 1 1 1 Cap screw not shown 15 16 17 18 19 20 21 22 23 24 25 26 27 9 2 3 Manifold assembly Cap screw use w manifold assembly Pl steel Stainless steel not shown Brass use with all actuators except 1069 531600 531600 use with 1069 actuator PI steel Stainless steel Brass or 0 252 0 Plastic Plastic W Cap screw not shown yoke mounted bracket mounted N 3 Pipe plug for 377L only not shown Pipe plug boss or bracket mounted w o manifold assembly for 480 16 only not shown Check valve for 377D 377U 377CW and 377CCW only not shown For use w o 2625 For use with 2625 Vent assembly not shown Top mounted 377D 377U 377CW Ww O Ww W UW 09 N U1 Ww N and 377CCW 7 Ww Top or boss mounted 377D 377U 377CW and 377CCW with flow control valve Boss mounted 377D 377L 377U 377CW and 377CCW Flow control valve optional on 377D 377U 377CW and 377CCW trip valves 39 Lithium grease not furnished with trip valve 2 Stainless steel Stainless steel 1 Included in Repair Kit continued Instruction Manual 377 Trip Valve D200319X012 July 2014 Table 2 Common Part
13. and local regulations may require the use of ASME approved volume tanks Determine requirements and applicable regulations for proper volume tank selection For ASME approved applications the volume tank is rated at 10 3 bar 150 psig internal working pressure and has a safety valve with a 10 3 bar 150 psig set pressure mounted on the volume tank for pressure relief Avoid supply pressure too near the safety valve set pressure To ensure Safety valve seat tightness and longevity the recommended maximum supply pressure is 9 3 bar 135 psig Standard volume tanks supplied in Europe must conform to Directive 2009 105 EC for simple pressure vessels The maximum pressure rating is stated on the tank For standard applications not ASME approved a DOT tank is used This tank is rated at 14 5 bar 240 psig in LP service When used with air the rating should be considered to be 10 3 bar 150 psig consistent with the maximum pressure allowed for the 377 trip valve 1 Before installing the trip valve inspect it to be sure it is free of any foreign material 2 Be sure all connecting tubing is free of foreign material 3 Use acceptable piping practices when installing the trip valve Coat all external threaded connections with a pipe compound CAUTION To avoid damage and possible operational impairment to the trip valve be careful not to get excessive pipe compound on the connections Excess compound could result in improper pilot and c
14. ating pressure to or from the top of the actuator cylinder For the fail down mode connect this port to the volume tank For the fail up mode vent this port to atmosphere For the lock in last position mode plug this port d Trip valve port D must receive the operating pressure that is intended for the bottom of the actuator cylinder Depending on the actuator type and accessories being used this operating pressure will be from a valve positioner or switching solenoid e Trip valve port E must provide operating pressure to the bottom of the actuator cylinder Always connect this port to the bottom of the actuator cylinder f Trip valve port F must provide a fail mode outlet for the operating pressure to or from the bottom of the actuator cylinder For the fail down mode vent this port to atmosphere For the fail up mode connect this port to the volume tank For the lock in last position mode plug this port Operating Information Calibration This calibration procedure assumes that the trip valve is mounted on the actuator or other device and that all piping and the appropriate volume tank if necessary are installed All key numbers refer to figure 10 For the appropriate fail mode schematic see figure 7 8 or 9 A WARNING The following procedure requires taking the trip valve out of service To avoid personal injury and property damage by an uncontrolled process medium provide some temporary means of control of the proces
15. ction use and maintenance of any product remains solely with the purchaser and end user Fisher and FIELDUVE are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co Emerson Process Management Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co All other marks are the property of their respective owners The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available upon request We reserve the right to modify or improve the designs or specifications of such products at any time without notice Emerson Process Management Marshalltown lowa 50158 USA Sorocaba 18087 Brazil Chatham Kent ME4 4QZ UK Dubai United Arab Emirates Singapore 128461 Singapore www Fisher com E M ERSON 1984 2014 Fisher Controls International LLC All rights reserved t
16. e Aluminum 0 95 kg 2 1 pounds SST 2 31 kg 5 1 pounds Mounting Manifold 0 5 kg 1 2 pounds Volume Tank Varies between 5 4 and 363 kg 12 and 800 pounds depending on size continued Instruction Manual D200319X012 Table 1 Specifications Available Configurations 377 Trip Valve Includes check valve but no volume tank user configured for locking position For field use or replacement When supply pressure falls below the trip point 377D Trip Valve Fails actuator piston down Includes check valve and volume tank 377L Trip Valve Locks actuator piston in the last position 377U Trip Valve Fails actuator piston up Includes check valve and volume tank 377CW Trip Valve Fails fully clockwise to close valve Requires check valve and volume tank Trip valve moves piston to either up down position and requires actuator configuration for actual clockwise movement 377CCW Trip Valve Fails fully counterclockwise to close valve Requires check valve and volume tank Trip valve moves piston to either up down position and requires actuator configuration for actual counterclockwise movement All 377 Trip Valves can be converted to any of the above fail modes with minor hookup changes Allowable Supply Pressure for Trip Valve Maximum 10 3 bar 150 psig Minimum 3 8 bar 55 psig Outlet Pressure Normal Operation Pressure from control device Fail Up or Fail Down Mode Maximum volume tank pressure Lock In Last
17. e personal injury and property damage Parts Kits Description Part Number Repair Kit Kit include valve plugs stems plug assemblies and nitrile diaphragms O rings and gasket keys 12 14 15 17 22 23 24 26 29 63 74 and 89 Aluminum Construction R377X000012 Stainless Construction R377X000032 Parts List Table 2 Common Parts MATERIAL KEY QUANTITY 5 5 NUMBER DESCRIPTION REQUIRED Trip Valve Construction Stainless Steel re s3100 316557 sae 0 CF3M SST casting Upper spring seat PI steel S31600 sleg a GE E EE ME TN Valve guide EEN Anodized aluminum TFE S31603 316L SST Co oms inom 1 12 Diaphragm Nitrile Nitrile Pag Fluorocarbon Fluorocarbon Diaphragm retainer N Anodized aluminum TFE 31603 14 TERRI Brass nitrile SST nitrile ping Brass fluorocarbon SST fluorocarbon 1 Included in Repair Kit continued 15 377 Trip Valve Instruction Manual July 2014 D200319X012 PART MATERIAL KEY QUANTITY z 2 NUMBER DESCRIPTION REQUIRED Trip Valve Construction OO Amim Ste Nitrile Nitrile Fluorocarbon Fluorocarbon CF3M SST casting Aluminum anodized aluminum GGL SST cat Nitrile Nitrile Fluorocarbon Fluorocarbon 1 Pilot body assembly Diaphragm Pusher plate Diaphragm spacer i Table 2 Common Parts continued Nitrile 1 Nitrile Fluorocarbon Fluorocarbon Brass chloroprene S31603 chloroprene Brass fluorocarbon
18. e the following procedures to inspect and repair or replace parts as necessary The frequency of inspection and repair or replacement depends upon the severity of service conditions Be sure to note the location of all pressure connections to ensure proper trip valve installation upon reassembly or use the installation procedures in this instruction manual All key numbers refer to figure 10 unless otherwise indicated A WARNING Avoid personal injury or property damage from sudden release of process pressure or bursting of parts Before performing any maintenance operations Always wear protective clothing gloves and eyewear when performing any maintenance operations to avoid personal injury Do not remove the actuator from the valve while the valve is still pressurized 12 Instruction Manual 377 Trip Valve D200319X012 July 2014 Disconnect any operating lines providing air pressure electric power or a control signal to the actuator Be sure the actuator cannot suddenly open or close the valve Use bypass valves or completely shut off the process to isolate the valve from process pressure Relieve process pressure from both sides of the valve Drain the process media from both sides of the valve Vent the power actuator loading pressure and relieve any actuator spring precompression Use lock out procedures to be sure that the above measures stay in effect while you work on the equipment Check with your process or safety
19. es to the power actuator release all pressure from the actuator Use lock out procedures to be sure that the above measures stay in effect while you work on the equipment Replacing Diaphragms and Valve Plug Parts CAUTION Care must be taken during the following procedure to prevent damage to the upper diaphragm 13 377 Trip Valve Instruction Manual July 2014 D200319X012 1 Remove the adjusting screw cap key 1 and loosen the hex nut key 3 that locks the set screw key 2 Loosen the set screw to remove all spring compression 2 Remove the cap screws key 7 not shown from the spring case and lift off the body assembly key 16 and attached parts from the trip valve body key 21 Note the orientation of the vent and supply connections to the body see figure 1 3 Remove the cap screws key 20 not shown and separate the diaphragm key 17 diaphragm spacer key 19 and the pusher plate key 18 from the rest of the body assembly Lift off the spring case key 4 travel stop key 75 aluminum housing only upper spring seat key 5 and spring key 6 4 Take out the upper diaphragm assembly keys 8 9 10 11 12 13 14 and 15 5 Carefully unscrew the spring seat key 9 from the upper diaphragm retainer key 13 Be careful not to lose the valve plug key 14 valve guide key 8 and spring key 10 Also be careful not to damage the upper diaphragm key 12 6 Inspect the upper diaphragm valve plug body as
20. ition mode When supply pressure falls below the trip point the exhaust port opens venting supply pressure from the lower diaphragm This causes the upper ports of the plug assemblies to close and the lower ports to open Because ports C and F are plugged no pressure change occurs on either side of the actuator piston and the piston is pressure locked in position No volume tank is necessary in this mode When supply pressure is restored the plug assemblies move back into the normal operating position Supply pressure from the control device is applied to the actuator through ports A and B and ports D and E 10 Instruction Manual 377 Trip Valve D200319X012 July 2014 Figure 8 Fisher 377L Trip Valve Shown in Tripped Condition OT 7 ET ST SS head MAIN SPRING SPRING ACTUATOR VALVE PLUG UPPER DIAPHRAGM EXHAUST PORT N O ar AE i Ri sie SUPPLY E PRESSURE GZ end EE EE DVC6200 EE EE LERE NN CONTROL DEVICE LOWER DIAPHRAGM d EE PORT D ad PORTE UPPER PORTS F LOWER PORTS PORT ASSEMBLIES EE Se ee a ae eee a aaa E E eee a PENE E foe ee EE ERE EE EE EE EERE ee ee SS SUPPLY PRESSURE PRESSURE TO TOP OF CYLINDER STATIC EE CONTROL PRESSURE TO TOP OF CYLINDER BLOCKED EEE PRESSURE FROM BOTTOM OF CYLINDER STATIC A CO
21. l MAXIMUM TRIP POINT A Z SETTING TO ENSURE oz RESET 60 50 40 5560 70 80 90 100 110 120 130 140 150 SUPPLY PRESSURE PSIG NOTES 1 gt TRIP POINT MAY BE SET TO ANY VALUE BETWEEN 2 8 BAR 40 PSIG AND THE MAXIMUM TRIP POINT LINE RESET OCCURS AT 12 5 TO 33 PERCENT ABOVE ADJUSTED TRIP POINT A2779 2 Installation A WARNING Avoid personal injury from sudden release of process pressure Before mounting the controller Always wear protective clothing gloves and eyewear when performing any installation operations to avoid personal injury Overpressuring any system component could result in personal injury or property damage due to fire and explosion caused by venting or leakage of the supply medium To avoid such injury or damage provide suitable pressure relief or pressure limiting devices if the supply pressure is capable of exceeding the maximum allowable pressure of the system component e Check with your process or safety engineer for any additional measures that must be taken to protect against process media e If installing into an existing application also refer to the WARNING at the beginning of the Maintenance section in this instruction manual The 377 trip valve is normally ordered as part of a control valve assembly Follow the procedure in the appropriate valve body and actuator instruction manual when installing the control valve in the piping Instruction Manual 377 Trip Valve D200319X012 July 2014 If the
22. r 377 trip valves are given in table 1 Educational Services For information on available courses for 377 trip valves as well as a variety of other products contact Emerson Process Management Educational Services Registration Phone 1 641 754 3771 or 1 800 338 8158 e mail education emerson com http www emersonprocess com education 377 Trip Valve July 2014 Pressure Connections 1 4 NPT internal Temperature Capabilities Nitrile Diaphragms and O Rings 40 to 82 C 40 to 180 F Fluorocarbon Diaphragms and O Rings 18 to 104 C 0 to 220 F Volume Tank Maximum Internal Working Pressure for 377D 377U 377CW and 377CCW trip valves Standard 10 3 bar 150 psig for non ASME approved applications See note on page 7 ASME Approved Applications Rated 10 3 bar 150 psig maximum 9 3 bar 135 psig recommended See note on page Hazardous Area Classification Complies with the requirements of ATEX Group II Category 2 Gas and Dust 662 377 SST Safety Instrumented System Classification SIL 3 capable certified by exida Consulting LLC Mounting Top Mounted Manifold mounted between a Fisher 3570 positioner and 480 actuator manifolds cannot be supplied with Fisher 585C 685 1061 1066 and 1069 piston actuators Side Mounted Yoke mounted or bracket mounted for use with a FIELDVUE DVC6200 DVC6200f DVC6200p DVC6000 or DVC6000F digital valve controller Approximate Weight Trip Valv
23. rt closes the upper ports of the plug assemblies open and the lower ports close Normal actuator control pressure from the control device is restored through ports A and B and ports D and E The check valve opens and recharges the volume tank to the maximum supply pressure 377 Trip Valve Instruction Manual July 2014 D200319X012 Figure 7 Fisher 377D Trip Valve Shown in Tripped Condition ei eie ge ge MAIN SPRING SPRING ACTUATOR VALVE PLUG UPPER DIAPHRAGM CONTROL EXHAUST DEVICE PORT GTITTER LSSSSSSLLLLLN KITS SSSA SLLSSSLSSSLSLSSSSSSSLLSSSSSSSLLSSL SUPPLY SS PRESSURE DVC6200 RAN LOWER DIAPHRAGM VSSLISLSISESSLLPISLILELLISSSILS SILISPISISSSSILELSSSISLSELSSSISLSSSSSSLSLPLSSSSILELDLS Ds PORT D PORTE UPPER PORTS N PLUG ASSEMBLIES LOWER PORTS VOLUME PORTF TANK 5 5 OE EE EE EE EE EE EE EE Ed X A SUPPLY PRESSURE PRESSURE TO TOP OF CYLINDER FROM VOLUME TANK CONTROL PRESSURE TO TOP OF CYLINDER BLOCKED ZZA PRESSURE FROM BOTTOM OF CYLINDER VENTING CONTROL PRESSURE TO TOP BOTTOM OF CYLINDER BLOCKED TE LOWER DIAPHRAGM LOADING PRESSURE BEING VENTED GE08412 A A6905 1 377L Trip Valve Figure 8 illustrates trip valve operation in the lock in last pos
24. s continued PART MATERIAL KEY QUANTITY NUMBER DESCRIPTION REQUIRED Trip Valve Construction e Sa Volume Tank for 377D 377U 377CW and 377CCW only not shown Standard 11 8L 721 inch 3 1 gal 21 6 L 1315 inch 5 7 gal 32 3 L 1970 inch 8 5 gal 42 9 L 2615 inch 11 3 gal 65 6 L 4001 inch 17 3 gal 131 L 8002 inch 34 6 gal requires two 4001 inch volume tanks ASME Approved use w safety valve Canadian Registered 8 5L 518 inch 2 2 gal Alloy steel 31600 316 SST 24 9 L 1520 inch 6 6 gal 30 0 L 1831 inch 7 9 gal 42 8 L 2609 inch 11 3 gal 68 8 L 4199 inch 18 1 gal 71 6L 4371 inch 18 9 gal 143 3 L 8742 inch 37 86 gal requires two 4371 inch volume tanks 114L 6930 inch 30 gal 227 L 13860 inch 60 gal 303 L 18480 inch 80 gal 454 L 27720 inch 120 gal 908 L 55440 inch 240 gal Pipe bushing 1 rec d For standard volume tanks w o 2625 T per pistei 531600 For standard volume tanks w 2625 or ae ASME approved volume tanks EP Pipe tee For two standard volume tanks w o 2625 For two standard volume tanks w 2625 or Ganed ron 531600 Galvanized steel S3600 For one ASME approved volume tank w 26252 Safety valve for ASME approved volume tanks S3600 two ASME approved volume tanks Connector For two standard volume tanks w o 2625 For two standard volume tanks w 2625 or Brass 0 two ASME approved volume tanks N UI N Oo N
25. s medium while the trip valve is out of service Instruction Manual 377 Trip Valve D200319X012 July 2014 1 Remove the adjusting screw cap key 1 2 Loosen the hex nut key 3 and turn the set screw key 2 counterclockwise until all loading is removed from the spring key 6 3 Connect an adequately sized gauge for the supply pressure reading to the supply line To make the fail action more visible adjust the control device signal so that actuator stem movement is visible when the trip valve is actuated 4 For the lock in last position mode remove the plugs from ports C and F 5 Set the supply pressure at the required trip point pressure refer to table 1 for the trip point limits Note For proper calibration completely back out the set screw key 2 until there is no spring compression Then set the trip point by turning the set screw clockwise to compress the spring 6 Slowly turn the set screw clockwise to compress the spring until the trip valve trips When the trip valve trips in the fail up or fail down mode the actuator stem moves to the appropriate position In the lock in last position mode the actuator stem does not move however air will be heard escaping from ports C and F This is because pressure is being released from both sides of the actuator cylinder 7 Tighten the hex nut key 3 and install the adjusting screw cap key 1 8 For the lock in last position mode reinstall the plugs in ports C and F 9
26. sembly and O ring key 15 for nicks scratches or cuts that could cause leakage Replace parts as necessary Make sure the O ring key 15 is properly lubricated key 77 to avoid leakage past the O ring 7 With the spring key 10 spring seat key 9 valve plug key 13 valve guide key 8 diaphragm washer key 11 and upper diaphragm key 12 in place screw the upper diaphragm retainer key 13 and spring seat key 9 together being careful not to damage the diaphragm 8 Inspect the lower diaphragm key 17 and pusher plate key 18 and replace them if damaged or excessively worn 9 Place the upper diaphragm assembly keys 8 9 10 11 12 13 14 and 15 travel stop key 75 aluminum housing only spring key 6 upper spring seat key 5 diaphragm spacer key 19 pusher plate key 18 and diaphragm key 17 onto the body assembly key 16 Secure the body assembly parts to the spring case key 4 with the cap screws key 20 Position the supply and vent connections as noted in step 2 10 Note the orientation of the supply connection to the body see figure 1 Attach the assembly from step 9 to the body key 21 with the cap screws key 7 not shown Tighten the screws 11 Refer to the installation and calibration procedures Replacing Stem Plug Assembly Parts 1 Remove the cap screws key 76 not shown from the body key 21 and remove the manifold key 73 and the stem plug assemblies keys 22 23 24 26 and 27
27. ss steel PI steel Stainless steel Nitrile nylon Nitrile nylon Polyacrylate nylon Polyacrylate nylon PI steel Stainless steel Lockwasher not shown Bracket mounted BO Hex nut not shown Bracket mounted 88 Washer not shown Bracket mounted Gasket Standard High temperature mo Mounting plate not shown Bracket mounted 1 Included in Repair Kit 2 Not required for stainless steel trip valve 65 71 73 74 75 76 77 79 88 95 i Pe ad Fittings Description Pipe Nipple galvanized or stainless steel Note 1 4 NPT The following is a list of tubing fittings and pipe fittings used for trip SANET valve installation Key numbers and quantities are not shown due to the variations in piping arrangements possible To order replacement fittings determine the part name size and number of replacements required and contact your Emerson Process Management sales office Connector brass or stainless steel 1 4 NPT x 1 4 O D 1 4 NPT x 3 8 O D 1 2 NPT x 1 2 O D Elbow brass or stainless steel 1 4 NPT x 3 8 O D Pipe cross galvanized iron or stainless steel Description 1 4 NPT 3 4 NPT Pipe Tee galvanized iron or stainless steel Pipe Bushing plated or stainless steel 1 4 NPT 3 4 NPT x 1 4 NPT 3 4 NPT 3 4NPT x 1 2 NPT 18 377 Trip Valve July 2014 m UJ OD ny SERE IT EE ie N HH Ed 5 EER Fi WI O OA pet
28. volun TANK 3 4 NPT CHECK VALVE 3 4 NPT OR 1 2 NPT PIPING SUPPLY NOTES 1 gt THE HOOK UP OF PORT C AND F ARE REVERSED FOR 377D 2 3 4 NPT CHECK VALVE 1 2 OR 3 4 NPT PIPING AND 1 2 INCH OUTSIDE DIAMETER COIL TUBING FOR THE VOLUME TANK ARE REQUIRED 3 THE SUPPLY PRESSURE REGULATOR SPECIFIED MUST HAVE ADEQUATE CAPACITY FOR 2625 BOOSTERS ALSO IF THE 2625 BOOSTER IS TO BE NIPPLE MOUNTED THE BOOSTER MUST BE MOUNTED TO A 1 2 NPT OR LARGER CYLINDER CONNECTION SOME SMALLER CYLINDERS CANNOT BE TAPPED THIS LARGE CONTACT YOUR EMERSON PROCESS MANAGEMENT SALES OFFICE FOR AVAILABILITY ON SPECIFIC TYPES AND SIZES E1570 377 Trip Valve Instruction Manual July 2014 D200319X012 Figure 6 Fisher 2625 Volume Booster used with 377L Trip Valve r INPUT SIGNAL 1 2 O D TUBING 2625 3 4 NPT OR 1 2 NPT PIPING A _ 3 8 O D PISTON TUBING ACTUATOR i2P 1 00 67CFR TYPICAL H 0 l POSITIONER 3 4 NPT CHECK VALVE ae 3 4NPTOR 1 2 NPT PIPING SUPPLY NOTES 1 3 4 NPT CHECK VALVE AND 1 2 OR 3 4 NPT PIPING ARE REQUIRED 2 THE SUPPLY PRESSURE REGULATOR SPECIFIED MUST HAVE ADEQUATE CAPACITY FOR 2625 BOOSTERS ALSO IF THE 2625 BOOSTER IS TO BE NIPPLE MOUNTED THE BOOSTER MUST BE MOUNTED TO A 1 2 NPT OR LARGER CYLINDER CONNECTION SOME SMALLER CYLINDERS CANNOT BE TAPPED THIS LARGE CONTACT YOUR EMERSON PROCESS MANAGEMENT SALES OFFICE FOR AVAILABILITY ON SPECIFIC TYPES AND SIZ
29. y pressure than the pressure demand of the trip valve and control devices However if the normal actuator piston position is not relatively close to the actuator piston fail position during startup or during the restoration of supply pressure the regulator supply pressure may droop and cause the trip valve to trip again and begin a trip reset cycle To prevent this perform the following steps 1 Adjust the instrument control device pressure to position the actuator piston as it is positioned in the fail mode 2 Restore the supply pressure to the normal operating range 3 Manually reset the instrument pressure for normal operation A WARNING If a flammable or hazardous gas is used as the supply pressure medium personal injury or property damage could result from fire or explosion of accumulated gas or from contact with hazardous gas The positioner actuator assembly does not form a gas tight seal and when the assembly is enclosed a remote vent line adequate ventilation and necessary safety measures should be used However a remote vent pipe alone cannot be relied upon to remove all hazardous gas Vent line piping should comply with local and regional codes and should be as short as possible with adequate inside diameter and few bends to reduce case pressure buildup Note To ensure trip system integrity upon loss of supply pressure a 377D or 377U trip system requires a volume tank and check valve as shown in figures 7 and 9 State
30. ylinder valve operation 377 Trip Valve Instruction Manual July 2014 D200319X012 CAUTION To ensure the integrity of control systems utilizing a 2625 volume booster in conjunction with a 377 trip valve apply supply pressure to the volume booster and to the volume tank volume tank not required on 377L trip valve through a check valve Failure to install the check valve properly will allow the cylinder pressure to bleed back through the open volume booster supply port upon loss of supply pressure The actuator may not fail as intended A WARNING Personal injury or property damage could result from bursting of parts due to temperature fluctuations or extreme heat If temperature fluctuations or extreme heat cannot be avoided use a relief valve to protect the volume tank 4 Read the following information before making pressure connections a Trip valve port A must receive the operating pressure that is intended for the top of the actuator cylinder Depending on the actuator type and accessories being used this operating pressure will be from a valve positioner or switching solenoid b Trip valve port B must provide operating pressure to the top of the actuator cylinder Depending on the actuator type and accessories being used connect this port to the manifold assembly to the top of the cylinder or to the cylinder connection on the hydraulic snubber if one is used c Trip valve port C must provide a fail mode outlet for the oper
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