Emerson Y692VB Instruction Manual
Contents
1. TYPE Y692VB VACUUM BREAKER B2579 EHE INLET PRESSURE ENS CONTROL PRESSURE VACUUM ATMOSPHERIC PRESSURE OR A LESSER VACUUM THAN THE POSITIVE PRESSURE ATMOSPHERE t VACUUM BEING LIMITED Figure 2 Operational Schematic indicated by the arrow cast on the body If continuous operation is required during inspection or maintenance install a three valve bypass around the equipment This equipment may vent some gas to the atmosphere In hazardous or flammable gas service vented gas may accumulate and cause personal injury death or property damage due to fire or explosion Vent equipment in hazardous gas service to a remote safe location away from air intakes or any hazardous area The vent line or stack opening must be protected against condensation or clogging Principle of Operation An increase in vacuum decrease in absolute pressure beyond the setpoint registers on the diaphragm opening the disk This permits body inlet pressure to enter the system and restore the controlled vacuum to the setpoint On Type Y692VB the pressure at the regulator body outlet registers directly into the diaphragm casing Type Y692VBM has a control line connecting the diaphragm casing to the vacuum being controlled and an O ring stem seal blocking the throat allowing for registration only through the control line connection outlet body pressure may or may not be the same as the pressure in the diaphrag2. 4 NPT Type Y692VB Gauge Tap Connection 1 4 NPT Type Y692VBM Control Line Connection 1 2 NPT Temperature Capabilities Nitrile NBR 40 to 180 F 40 to 82 C Fluorocarbon FKM 40 to 300 F 4 to 149 C Ethylenepropylene EPR 20 to 200 F 29 to 93 C Perfluoroelastomer FFKM 0 to 300 F 18 to 149 C Silicone 40 to 400 F 40 to 204 C Approximate Weight Cast Iron 45 pounds 20 kg Steel Stainless Steel or Hastelloy C 57 pounds 26 kg 1 End connections for other than U S standards can usually be provided consult your local Sales Office 2 The pressure temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded Table 1 End Connection Styles BODY SIZE CONSTRUCTION MATERIAL AND END CONNECTION STYLE NPS DN Cast Iron Steel or Stainless Steel Hastelloy C 1 1 2 40 NPT NPT SWE CL150 RF CL150 RF 2 50 NPT or CL125 FF CL300 RF or PN 16 25 40 1 All flanges are welded on to the body and have a face to face dimension of 14 inches 356 mm Table 2 Vacuum Pressure Information VACUUM CONTROL CHANGE IN VACUUM SPRING PART SPRING SPRING WIRE SPRING FREE PRESSURE RANGE CONTROL PRESSURE TO NUMBER COLOR DIAMETER LENGTH REACH WIDE OPEN INCHES mm INCHES mm 1 to 3 inches w c 2 to 7 mbar 1 2 inches w c 3 mbar 1D892527022 Brown 0 109 2 77 6 12 155 3 to 8 inches w c 7
3. to 20 mbar 4 0 inches w c 10 mbar 0B019727052 Purple 0 148 3 76 6 00 152 8 to 16 inches w c 20 to 40 mbar 5 0 inches w c 13 mbar 1B766627062 Gray 0 156 3 96 6 62 168 16 to 32 inches w c 40 to 80 mbar 10 5 inches w c 26 mbar 1B883327022 Unpainted 0 187 4 75 6 62 168 0 25 to 3 psig 17 mbar to 0 21 bar 2 psig 0 14 bar 14630627022 Black 0 275 6 99 5 25 133 Example 1 to 3 inches w c 2 to 7 mbar changes to 2 7 to 4 7 inches w c 7 to 12 mbar Note If this equipment is shipped mounted on another unit install that unit according to the appropriate instruction manual 1 Only personnel qualified through training and experience should install operate and maintain Hastelloy C is a mark owned by Haynes International Inc 1 Pressure ranges are based on the spring case pointing up Pointing the spring case down increases the pressure range 1 7 inches w c 4 mbar 2 Do not use fluorocarbon FKM with these springs at diaphragm temperatures lower than 40 F 4 C this unit Before installing the vacuum breaker make sure the unit was not damaged during shipping and that it does not contain any foreign material Also ensure that all tubing and piping have been blown free This unit may be installed in any position as long as the flow through the body is in the direction Y692VB Series VACUUM PUMP VACUUM BEING LIMITED UNION NUT
4. 22 Industrial Regulators Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75069 1872 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Shanghai China 201206 Tel 86 21 2892 9000 Europe Bologna Italy 40013 Tel 39 051 4190611 Middle East and Africa Dubai United Arab Emirates Tel 971 4811 8100 For further information visit www fisherregulators com Natural Gas Technologies Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75069 1872 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Singapore Singapore 128461 Tel 65 6777 8211 Europe Bologna Italy 40013 Tel 39 051 4190611 Gallardon France 28320 Tel 33 0 2 37 33 47 00 TESCOM Emerson Process Management Tescom Corporation USA Headquarters EIk River Minnesota 55330 2445 USA Tel 1 763 241 3238 Europe Selmsdorf Germany 23923 Tel 49 0 38823 31 0 The Emerson logo is a trademark and service mark of Emerson Electric Co All other marks are the property of their prospective owners Fisher is a mark owned by Fisher Controls Inc a business of Emerson Process Management 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 servic
5. Instruction M s Fomm5479 Y692VB Series January 2010 Y692VB Series Vacuum Breakers Introduction Scope of the Manual This manual provides instructions and a parts list for Types Y692VB and Y692VBM vacuum breakers Instructions and parts lists for other equipment used with these breakers are found in separate manuals Product Description The Y692VB Series vacuum breakers are used for precise control of small capacity low pressure service applications where an increase in vacuum must be limited These direct operated vacuum breakers come in NPS 1 1 2 and 2 DN 40 and 50 body sizes and have a 3 4 or 1 3 16 inch 19 or 30 mm orifice and wraao a 3 4 inch 19 mm spring case vent connection with optional umbrella vent assembly The products are Figure 1 Type Y692VB Vacuum Breaker described as follows Type Y692VB Type Y692VB has internal pressure equipment is overpressured or is registration so it does not require a control line installed where service conditions Type Y692VBM Type Y692VBM has a control line could exceed the limits given in the connection and an O ring stem seal to block the throat Specifications or where conditions for external pressure registration exceed any ratings of the adjacent piping or piping connections To avoid such injury or damage provide Specifications pressure relieving or pressure limiting Some general ratings and specifications for the devices as required by the ap
6. T PRI a 2 Ca T LL Z A7178 LEMMA VALL Lae oe en 2 LLLA f LYI 22 s 29 24 C 9 Figure 3 Y692VB Series Assembly N Tw T RR A TR TR TR a e SHV N Z A lini Hs E S PL SIM NUT a F M MN eh H V 5 IG GD 43 GD 19 29 G N EO 5 4 s IKL in gil TAs 7 LL amp Table 3 Body Materials and Part Numbers Key 28 MATERIAL BODY SICE AND END CONNECTION CUBE Cast Iron WCB Steel WCB Steel NACE CF8M Stainless Steel NPT 1B403619012 2L244522012 2L244533092 SWE 2E2291X0012 NPS 1 1 2 DN 40 CL150 RF 14B3208X262 14B3208X252 14B3208X272 CL300 RF 14B3208X022 14B3208X242 14B3208X052 PN 16 25 40 14B3208X072 14B3208X222 14B3208X092 NPT 1B403719012 2L243322012 2L2433X00A2 SWE 2H562322012 CL125 FF 2D986519012 NPS AABN S0 CL150 RF 14B3208X012 14B3208X202 14B3208X042 CL300 RF 14B3208X032 14B3208X162 14B3208X062 PN 16 25 40 14B3208X082 14B3208X232 14B3208X102 Parts List Key Description Part Number Key Description Part Number 1 Spring 5 Diaphragm 1 to 3 inches w c 2 to 7 mbar 1D892527022 Nitrile NBR 0R032502052 3 to 8 inches w c 7 to 20 mbar 0B0197000A2 Fluorocarbon FKM 0R0325X0032 8 to 16 inches w c 20 to 40 mbar 1B766627062 Ethylenepropylene EPR 0R0325X0062 16 to 32 inches w c 40 t
7. agm head key 6 on the pusher post key 8 and attach with the diaphragm hex nut key 37 Tighten using 30 to 45 foot pounds 41 to 61 N m of torque Install the pusher post key 8 plus attached diaphragm parts onto the lever assembly key 9 Install the spring case assembly key 23 and control spring on the diaphragm casing key 20 so that the vent assembly key 65 not shown is correctly oriented and secure them with the cap screws key 21 and hex nuts key 22 finger tight only Turn the adjusting nut key 2 clockwise until there is enough control spring key 1 force to provide proper slack to the diaphragm key 5 and attached parts Using a crisscross pattern finish tightening the cap screws key 21 and hex nuts key 22 to 55 to 75 inch pounds 6 to 8 Nem of torque Then finish turning the adjusting nut to the desired outlet pressure setting Install a replacement closing cap gasket key 35 if necessary and then install the closing cap key 3 Parts Ordering When corresponding with your local Sales Office about this regulator include the type number and all other pertinent information stamped on the closing cap key 3 or nameplate key 50 Specify the eleven character part number when ordering new parts from the following parts list Y692VB Series OROFO VERE MEER TF mA mm mmm 27777 Y a co C C9 amp 3 A NASARARAAAS cl XE p Seed Th LS ccs D S T
8. es described herein or their use or applicability We reserve the right to modify or improve the designs or specifications of such products at any time without notice Emerson Process Management does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any Emerson Process Management product remains solely with the purchaser P amp EMERSON Proce Manac meni Emerson Process Management Regulator Technologies Inc 1999 2010 All Rights Reserved FrOCess Mar lager ne nt
9. h 8 10 11 12 Install the lever assembly key 9 into the valve stem key 13 and secure the lever assembly key 9 with the machine screws key 11 Install the lower head gasket key 7 lower diaphragm head key 24 diaphragm key 5 and upper diaphragm head key 6 on the pusher post key 8 and attach with the diaphragm hex nut key 37 Tighten using 30 to 45 foot pounds 41 to 61 Nem of torque Install the pusher post key 8 plus attached diaphragm parts onto the lever assembly key 9 Install the spring case assembly key 23 and control spring key 1 on the diaphragm casing key 20 so that the vent assembly is correctly oriented and secure them with the cap screws key 21 and hex nuts key 22 finger tight only Install the upper spring seat key 44 and the adjusting nut key 2 turning clockwise until there is enough control spring key 1 force to provide proper slack to the diaphragm key 5 and attached parts Using a crisscross pattern finish tightening the cap screws key 21 and hex nuts key 22 using 55 to 75 inch pounds 6 to 8 Nem of torque Then finish turning the adjusting nut to the desired outlet pressure setting Install a replacement closing cap gasket key 35 if necessary and then install the closing cap key 3 Type Y692VBM Key numbers are referenced in Figures 3 and 4 1 2 Remove the closing cap key 3 and turn the adjusting nut key 2 counterc
10. lockwise until all compression is removed from the control spring key 1 Remove the spring case cap screws key 21 and hex nuts key 22 and lift off the spring case assembly key 23 If the only further maintenance is to change the control spring key 1 skip to step 10 Remove the diaphragm key 5 and attached parts by tilting it so that the pusher post key 8 slips off the lever assembly key 9 To separate the diaphragm key 5 from the attached parts unscrew the diaphragm hex nut key 37 If the only further maintenance is to replace the diaphragm parts or change the control spring key 1 skip to step 8 10 11 12 Y692VB Series To replace the lever assembly key 9 remove the machine screws key 11 To replace the valve stem key 13 or stem seal O ring key 15 perform Body Area Maintenance procedure steps 1 through 4 and pull the valve stem out of the diaphragm casing key 20 Lightly grease the replacement stem seal O ring key 15 with a good grade of elastomer lubricant and install on the valve stem key 13 Install the valve stem by pushing it into the diaphragm casing and perform Body Area Maintenance procedure step 5 and step 8 if necessary Install the lever assembly key 9 into the valve stem key 13 and secure the lever assembly key 9 with the machine screws key 11 Install the lower head gasket key 7 lower diaphragm head key 24 diaphragm key 5 and upper diaphr
11. m casing Startup and Adjustment All Ye92VB Series vacuum breakers can be placed in operation by slowly introducing inlet pressure The unit takes control when vacuum is established This equipment is suitable for the vacuum control pressure range stamped on the nameplate key 50 Figure 5 To adjust the pressure setting remove the closing cap key 3 and turn the adjusting nut key 2 clockwise to increase the pressure setting or counterclockwise to decrease the setting Replace the closing cap after adjustment The closing cap may be wired to the hole provided in the spring case key 23 to discourage tampering Shutdown To shut down the unit close the upstream shut off valve and then close the downstream shut off valve to vent the equipment properly Next open the vent valve Y692VB Series between the equipment and the downstream shut off valve nearest to it All pressure between these shut off valves is released through the open vent valve Maintenance Vacuum breaker parts are subject to normal wear and must be inspected and replaced as necessary Inspection frequency and replacement of parts depends on the severity of service conditions applicable codes government regulations and company standards To avoid personal injury property damage or equipment damage caused by sudden release of pressure or explosion of accumulated gas do not attempt any maintenance or disassembly without first isolating the vacuum b
12. m casing key 20 by tightening the union nut key 19 until the diaphragm casing is secure on the body key 28 Diaphragm and Spring Case Area This procedure is for gaining access to the control spring diaphragm assembly valve stem and stem O ring Release all pressure from the diaphragm case before performing the following steps Type Y692VB Key numbers are referenced in Figure 3 1 Remove the closing cap key 3 and turn the adjusting nut key 2 counterclockwise until all compression is removed from the control spring key 1 If the only further maintenance is to change the control spring key 1 skip to step 11 2 Remove the cap screws key 21 and hex nuts key 22 and lift off the spring case assembly key 23 3 Remove the diaphragm key 5 and attached parts by tilting it so that the pusher post key 8 slips off the lever assembly key 9 To separate the diaphragm from the attached parts unscrew the diaphragm hex nut key 37 If the only further maintenance is to replace the diaphragm parts or change the control spring key 1 skip to step 8 4 To replace the lever assembly key 9 remove the machine screws key 11 5 To replace the valve stem key 13 perform Body Area Maintenance procedure steps 1 through 4 and pull the valve stem out of the diaphragm casing key 20 6 Install the valve stem key 13 into the diaphragm casing key 20 and perform Body Area Maintenance procedure steps 5 throug
13. ng Case Cast iron WCB Steel CF8M Stainless steel Aluminum Lower Diaphragm Head Disk Holder Assembly Standard Trim Nitrile NBR Fluorocarbon FKM Polytetrafluoroethylene PTFE NACE Trim Neoprene CR Fluorocarbon FKM Perfluoroelastomer FFKM PTFE Ethylenepropylene EPR Orifice Standard 3 4 inch 19 mm 1 3 16 inch 30 mm NACE 3 4 inch 19 mm 1 3 16 inch 30 mm Body Pipe Plug Use on Type Y692VB Cast iron and steel lower casings NACE Stainless steel lower casing Closing Cap Gasket Adjusting Stem Part Number 1A309324122 1A309338992 2B155719042 34B2157X012 34B2157X042 AE6180X0012 1A3478X0022 1C7831X0072 1C7831X0092 1C7831X0112 1C7831X0152 1C7831X0162 1C7831X0202 1C7831X0212 1C7831X0222 1B816935032 15A6822X012 1B8169X0012 15A6822X022 See Table 3 1C333528992 1C3335X0012 1N446206992 14626314012 Y692VB Series Figure 5 Y692VB Series Detail Key Description Part Number Key Description Part Number 37 Diaphragm Hex Nut 1A499724122 47 Machine Screw 19A7151X022 44 Upper Spring Seat 51 Drive Screw 14368228982 1 to 16 inches w c 2 to 40 mbar 14869524092 56 Vent Assembly Y602X1 11 not shown 17A5515X012 16 inches w c to 3 psig 40 mbar to 0 21 bar 1A626424092 71 Pipe Bushing not shown 1A3424X0042 46 Valve Disk Washer 95 NACE Tag NACE Construction only Standard Trim 0X014635032 not shown 19A6034X012 NACE Trim 0X0146X0012 96 TagWire NACE Construction only not shown 1U7581X00
14. o 80 mbar 1B883327022 Silicone 0R0325X0082 0 25 to 3 psig 17 mbar to 0 21 bar 0B019727052 6 Upper Diaphragm Head 08006628982 2 Adjusting Nut 1A201914012 7 Lower Head Gasket 1L143403022 3 Closing Cap 1L928308012 8 Pusher Post Stainless steel 0Y096435072 4 Lower Spring Seat 1U226019012 9 Lever Assembly 1E3409X0052 Recommended Spare Parts Key 11 13 14 15 20 21 A7179 Tz NNA T d WAL LA ZA Lise IS YY Y692VB Series Figure 4 Type Y692VBM O Ring Stem Seal Detail Description Machine Screw 2 Required Standard NACE Valve Stem Standard NACE Cotter Pin Standard NACE O Ring Stem Seal for Type Y692VBM only Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPR Perfluoroelastomer FFKM Body Gasket Split Ring Union Nut Cast iron body WCB Steel body CF8M Stainless steel body Diaphragm Casing Type Y692VB Cast iron WCB Steel Standard NACE CF8M Stainless steel Type Y692VBM WCB Steel CF8M Stainless steel Cap Screw 12 required Standard NACE Recommended Spare Parts Part Number 1A866935032 1A8669X0012 1E767635032 1E7676X0012 1A866537022 1A8665X00A2 1E472706992 1N430406382 1D6875X0032 1D6875X0082 1A348004032 0Y095828982 0Z0176X0032 0Z017624092 0Z0176X0012 3B973519012 3F191622012 3F1916X0022 3F191633092 39A7502X022 39A7502X012 1B136324052 1B136338992 Key 22 23 24 25 27 Description Hex Nut 12 required Standard NACE Spri
15. propriate Y692VB Series vacuum breakers are given on page 2 code regulation or standard to prevent Individual vacuum breakers come from the factory with service conditions from exceeding the specific data stamped on the nameplate those limits Additionally physical damage to this equipment could cause personal injury or property damage due Installation to escaping gas To avoid such injury or damage install the equipment in a safe UN WARNING and well ventilated location Equipment operation within ratings does not preclude the possibility of damage from debris in the lines or from external sources This equipment should be inspected for damage periodically and after any overpressure condition Personal injury property damage equipment damage or leakage due to escaping gas or bursting of pressure containing parts may result if this FISHER EMERSON Process Management D102661X012 Y692VB Series Specifications Body Sizes NPS 1 1 2 or 2 DN 40 or 50 End Connection Styles See Table 1 Maximum Allowable Inlet Positive Pressure and Orifice Sizes 3 4 inch 19 mm Orifice 30 psig 2 1 bar 1 3 16 inch 30 mm Orifice 13 psig 0 90 bar Vacuum Control Pressure Ranges See Table 2 Maximum Casing Pressure 8 psig 0 55 bar Vacuum Change in Vacuum Control Pressure to Reach Wide Open See Table 2 Pressure Registration Type Y692VB Internal Type Y692VBM External Spring Case Connection 3
16. reaker from system pressure and relieving all internal pressure Body Area The following procedure is for gaining access to the disk assembly orifice and body gasket Release all pressure from the diaphragm case before performing the following steps Key numbers are referenced in Figures 3 and 4 1 To inspect and replace the disk holder assembly key 25 or orifice key 27 loosen the union nut key 19 Tip the diaphragm casing key 20 toward the outlet and separate it from the body key 28 2 Remove and inspect the body gasket key 16 3 Inspect the orifice key 27 and replace it if necessary Lightly grease the orifice threads and install it using 29 to 37 foot pounds 39 to 50 Nem of torque 4 Remove the cotter pin key 14 if it is necessary to replace the disk holder assembly key 25 Note The disk holder assembly key 25 is comprised of the disk and disk holder A washer key 46 and machine screw key 47 are required to complete the assembly 5 Install the disk holder assembly key 25 Use the cotter pin key 14 to secure it to the valve stem key 13 6 If necessary install a replacement body gasket key 16 into the body key 28 7 Slide the union nut key 19 onto the diaphragm casing key 20 as far as it will go Install both halves of the split ring key 17 into the slots of the diaphragm casing and secure them by sliding the union nut over the split ring 8 Install the diaphrag
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