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1. Temperature 20 AC nn Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES 6 Specifications of actuator List of Specifications Adaptive Nominal Size mm inch Installation Operation and Maintenance Manual Actuator Type Opening and Closing Time Sec protection structure Motor starting current A 50 60Hz Motor rated current A 50 60Hz Number of rotations of manual operating handle Watt consumption W AC200V 397 361 650 610 50 60Hz AC400V 397 361 670 610 Nominal diameter of cable connector Operation circuit 2 G1 2 Gl Motor circuit G3 4 Motor rated output W By kind of motor insulation Motor rated time min Capacity of limit switch AC250V_ 10A Motor polar number P 4 Space heater rated output W 10 Maximum impressed voltage between potentiometers V Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES Installation Operation and Maintenance Manual Wiring diaphragm LTRM EXAMPLE OF REFERENCE CONNECTION c i SE E OF CIRCUIT pi J SG g F MOTOR lt2. 1 LON l 7 FUSE E FOR CIRCUIT F OPERATIC Ure F t VAN if per Shut i Ineida ai Actuator e Wi Woe oo E o OLS Thermal plotector alo m ao By SO 5 OTLS os i _ sto ce F ao i asy so STL A t TH 2 5 QES 2 l L E Oper D lt SLS 2 X Full Shu 3 as lt lt API Be m TO ERATION REQUENCY 1 3 phas single phase Space heaten standard accessory Hi H o AC200 OAC o 50H OAC O AC110V o 60H 1 Transducer Optior o AC4 o AC2 T ACH 0 AC220 i A A Jipu ignal l r 1 ve ptior ntiometer tentiometer Set of R J Transducer O Standard with Space heater H i OPotentiometer o a OR 1 Transducer o ih SS I ntior r ptior nx Space heater is standard acce hn z tentiometer NOTE This circuit diagram st the position that the opening action ha I to an end Switching chart Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES Installation Operation and Maintenance Manual 7 Installation procedure A SO When suspending and supporting a valve take care and do not stand under a suspended valve Warning Be sure to conduct a safety check on all hand and power tools to be used before beginning work Wear protective gloves and safety goggles as fluid remain in the valve even if the pipeline is empty You may be injured A S Do not use the valve to fluid containing slurry The valve will not operate properl
3. There is foreign matter between the diaphragm and the body Disassemble valve to remove foreign matter Refer to page 13 The actuator operated but the valve does not open or close The diaphragm or the joint metal fitting is broken Replace broken parts Refer to page 13 15 Handling of residual and waste materials A g Make sure to consult a waste treatment dealer for recommendations on the proper disposal of plastic valves Warning Poisonous gas is generated when the valve is burned improperly Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 17 ASAHI AV VALVES Installation Operation and Maintenance Manual Diaphragm Valve Type 15 Electric Actuated Type S Automatic Valve ASAHI AV VALVES Distributor http Avww asahi yukizai co jp en anic Chemicals Indust Information in this manual is subject to change without notice 2013 4 Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm
4. Treatment The valve has already been opened fully ae ie handle a he ev direction The handle is not can t be The valve is kept as it is electrified in the turned when the valve is direction reverse to the handle operating Tum off the power source operated manually direction Disassemble the valve to remove Peed eleva foreign matter Refer to page 13 The power source of the control panel is turned off Tum on the power source Ahe verve does not ope ate The actuator is disconnected motor driven operations Check the connection again Refer to page7 Open and close are electrified simultaneously Replace the diaphragm with a new ee one Refer to page 13 Replace scratched parts with new Fluid leaks from the valve The diaphragm or the body is scratched ones Refer to page 13 even when the valve is closed fully There is foreign matter between the diaphragm Disassemble valve to remove foreign and the body matter Refer to page 13 The voltage is low Check the voltage Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 16 ASAHI AV VALVES Installation Operation and Maintenance Manual Problem Cause Treatment The bolt between the body and actuator is Tighten up the bolt to the specified loose torque Refer to page 13 Fluid leaks from the valve The diaphragm or the body is scratched Replace scratched parts with new one
5. the cover of the actuator with a spanner Remove the switch cover and take the indicator out and push it back in to show the 0 Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm Installation Operation and Maintenance Manual There are four states of limit switch as above The switch works when the arrow moves N to A 15 ASAHI AV VALVES Installation Operation and Maintenance Manual 13 Inspection items A a Perform periodic maintenance Leakage may develop due to temperature changes or over periods i Caution of prolonged storage rest or operation Portion to be inspected Inspection item Existence of rust peeling of paint and dirt of inspection hole of valve travel indicator Tightening condition of respective threaded portions Loose or not Existence of rust and corrosion around the limit switch and existence of internal Actuator disconnection Existence of rust and corrosion of terminal board and existence of disconnection Existence of abnormality in opening and closing operating sounds Tt is unnecessary to supply oil to this actuator Existence of scratches cracks deformation and discoloring Existence of leakage from the valve to the outside Existence of leakage when the valve is closed fully at right or left Tightening condition of bolt A oose or not 14 Troubleshooting Problem
6. with water or other liquid Take care in storage and handling After unpacking the products check that they are defect free and meet the specifications Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES 4 Name of parts Nominal size 125 150mm 5 6 Installation Operation and Maintenance Manual 71 f be material Ib be 5 SR TFE 4 Fcushiol 1 3 7 3a dh 23 a le a B 1 24a A SS 56 RUS Re N i f b 24 No DESCRIPTION No DESCRIPTION No DESCRIPTION 1 Body 5 Cushion cover 56 Stand A la Inserted nut 23 Inserted bolt nut 71 Bonnet B 3 Diaphragm 24 Bolt nut 73 Actuator motor 3a Inserted metal of diaphragm A 24a Washer 4 Cushion 29 Spring washer In case that the body is PVDE Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES Installation Operation and Maintenance Manual 5 Working pressure vs temperature Rubber Nominal size 25mt TFE Nominal size 125 150mm
7. 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l I l 1 l 1 l 1 l 1 l 1 1 I 1 l I l 1 l 1 l 1 I l 1 l 1 I one i similar that covers the entire area l l 1 l 1 1 l 1 l 1 l 1 l 1 l 1 1 l 1 l 1 l 1 l 1 l 1 l 1 l I 1 l 1 l 1 l 1 l 1 l 1 I 1 l I l 1 l 1 l 1 l 1 l 1 l 1 l 1 l I l 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 1 l 1 l 1 1 l 1 l 1 l 1 l 1 l 1 l 1 Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES Installation Operation and Maintenance Manual 3 General instructions for transportation unpacking and storage A When suspending and supporting a valve take care and do not stand under a suspended valve Warning A This valve is not designed to handle impacts of any kind Avoid throwing or dropping the valve Caution Avoid scratching the valve with any sharp object Do not over stack cardboard shipping boxes Excessively stacked packages may collapse Avoid contact with any coal tar creosote insecticides vermicides or paint The force of swelling may damage the valve When transporting a valve do not carry it by the handle qs Store products in their corrugated cardboard boxes Avoid exposing products to direct sunlight and store them indoors at room temperature Also avoid storing products in areas with excessive temperatures Corrugated cardboard packages become weaker as they become wet
8. ASAHI AV VALVES Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm Installation Operation and Maintenance Manual Serial No H A013 E 5 Contents 1 Be sure to read the following warranty clauses of our product rrr 1 2 General operating instructions E EEE NE AEA TE EAE 2 3 General instructions for transportation unpacking and storage 1 3 4 Name of parts s 4 5 6 7 8 9 Electric wiring procedure nnn 10 10 Operating procedure renner renner nnn 11 Manual operating procedure seee 12 Motor driven operating procedure wren en 12 11 Disassembling method for replacing parts B 12 Adjustment limit switch on 14 13 Inspection items eerie 15 14 Troubleshooting acne 16 15 Handling of residual and waste materials OAT AAE UET ERATE EAE ERAT 17 ASAHI AV VALVES Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES This user s guide contains information important to the proper installation maintenance and safe use of an ASAHI AV Product Please store this manual in an easily accessible location lt Warning amp Caution Signs gt A This symbol reminds the user to take caution due to the potential for serious injury or death Waming A This symbol reminds the user to take caution due to the potential for damage to the valve if used in Caution such a manner Installation Operation and Maintenance Manual lt Prohibite
9. EDA a pr A eo ea a eee PAEA PE PA FA Le D a ne ee eee AA er ee ra ee eg eer ne em ane Sener A gt Do not leave the terminal board cover and the limit switch cover as they are removed from the actuator Coming into contact with a terminal in this state can give you an electric shock aming ene ee een ee ee ee cae saaseecsacan Procedure PNA AREE i agi sedeaausitessessseseacitinsscenity perati IT101 1 Turn on the power source 1 2 Set the external switch to Open or Shut and check to ensure that the valve 2 iz indicating direction and the operating direction accord with each other TO il f 3 Tum off the power source in the state of the full open or shut mtn Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 12 ASAHI AV VALVES Installation Operation and Maintenance Manual 11 Disassembling method for replacing parts A S Do not disassemble or remodel the actuator Warning Do not touch any parts on actuator circuit board or terminal block or connect or disconnect wires while the actuator is energized Any such practice may result in an electric shock or equipment damage Do not change or replace valve parts under line pressure Be sure to conduct a safety check on all hand and power tools to be used before beginning work Wear protective gloves and safety goggles as fluid re
10. act for each motor driven valve Do not use the product near high voltage wire inverter or any other equipment that produces electrical noise or magnetism The presence of such nearby may cause malfunction or breakdown Check the integrity of wiring insulation before connecting to the actuator Failure to observe this precaution may result in wire damage Ensure all covers are tightly fastened prior to operation Insufficient fastening may allow rainwater dust or dirt to come in resulting in breakdown When connecting wires be sure to observe the connection diagram and make the connections correctly Moreover after wiring ensure that the connections are securely made before turning on the power Failure to take this precaution may cause malfunction or breakdown Each cover part is sealed with an O ring When laying wiring or in similar cases where the cover is removed and replaced ensure that the O ring is installed in the specified location and securely sealed Insufficient sealing may cause the actuator to be penetrated by rainwater or other foreign matter resulting in electric shock or breakdown If you wish to use the product outdoors or in any other location exposed to rainwater or other forms of moisture protect the wiring conduit of the actuator against ingress of rainwater and all other wetness Failure to take such a precaution may cause the actuator to be penetrated by rainwater or something similar resulting
11. ch is reported to us will be investigated immediately to identify its cause Should our product be deemed defective we shall assume the responsibility to repair or replace it free of charge Any repair or replacement needed after the warranty period ends shall be charged to the customer The warranty does not cover the following cases 1 Using our product under any condition not covered by our defined scope of warranty 2 Failure to observe our defined precautions or instructions regarding the construction installation handling maintenance or servicing of our product 3 Any inconvenience caused by any product other than ours 4 Remodeling or otherwise modifying our product by anyone other than us 5 Using any part of our product for anything other than the intended use of the product 6 Any abnormality that occurs due to a natural disaster accident or other incident not stemming from something inside our product Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES Installation Operation and Maintenance Manual 2 General operating instructions A Do not disassemble or remodel the actuator Warning Keep hands and other extremities away from moving parts under all circumstances Any such practice may get your hand arm or other part of your body caught Using a positive pressure gas with our plastic piping may pose a dangerous condition due to the repellent force particular to comp
12. d amp Mandatory Action Signs gt S Prohibited When operating the valve this symbol indicates an action that should not be taken 4 Mandatory action When operating the valve this symbol indicates mandatory actions that must be adhered to 1 Be sure to read the following warranty clauses of our product Always observe the specifications of and the precautions and instructions on using our product We always strive to improve product quality and reliability but cannot guarantee perfection Therefore should you intend to use this product with any equipment or machinery that may pose the risk of serious or even fatal injury or property damage ensure an appropriate safety design or take other measures with sufficient consideration given to possible problems We shall assume no responsibility for any inconvenience stemming from any action on your part without our written consent in the form of specifications or other documented approval The related technical documents operation manuals and other documentation prescribe precautions on selecting constructing installing operating maintaining and servicing our products For details consult with our nearest distributor or agent Our product warranty extends for one and a half years after the product is shipped from our factory or one year after the product is installed whichever comes first Any product abnormality that occurs during the warranty period or whi
13. e valve stand 56 and the support stand with bolts Spread the rubber sheet under the actuator and support with the support stand ale H ala Je mama Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 9 ASAHI AV VALVES Installation Operation and Maintenance Manual 9 Electric wiring procedure A Do not touch any parts on actuator circuit board or terminal clock or connect or disconnect wires while Warning the actuator is energized Any such practice may result in an electric shock or equipment damage Keep hands and other extremities away from moving parts under all circumstances Any such practice may get your hand arm or other part of your body caught Be sure to establish a ground A defective ground may result in an electrical shock fire or other incident At the time of adjustment or inspection ensure that your hands are free of water and oil l Any such substance on your hands may result in an electric shock or equipment damage Do not operate the manual override while the actuator is energized A S Do not exceed the rated capacity of limit switch contacts If you wish to apply very small loads 1 100 Caution mA 5 30 V consult our service station nearest to you Do not connect two or more motor driven valves in series Also install a switch or a relay cont
14. ector Short circuit or shocks may occur 9 Tighten above screws with a spanner wrench to fix and install the cover of the actuator 10 Connect the earth wire to a good ground 10 Operating procedure pHa Rebtel eee eee ee Se Oe ee ee Bee ob eee bore Se oe ee ee A S Do not connect or disconnect wires while energized Do not touch any other part on the board or the Warning wiring on the terminal block Any such practice may result in an electric shock or equipment damage Do not under any circumstances touch a moving part in action with a hand Any such practice may get your hand arm or other part of your body caught Be sure to establish a ground A defective ground may result in an electrical shock fire or other incident At the time of adjustment or inspection ensure that your hands are free of water and oil Any such substance on your hands may result in an electric shock or equipment damage Do not operate the manual override while the actuator is energized A S Do not connect two or more motor driven valves in series Also install a switch or a relay contact Caution for each motor driven valve Do not use the product near a high voltage wire inverter or other equipment that produces electrical noise or magnetism The presence of such nearby may cause malfunction or breakdown ay Check the integrity of wiring insulation before connecting to the actuator Failure to observe this precaution may
15. in electric shock or breakdown In the case of malodor overheating or smoking turn off the power supply immediately Continued use despite an abnormality present may result ina fire If you detect any abnormalities be sure to consult the dealership where you bought the product or our service station nearest your premises and ask them to perform an inspection par Necessary ih User eed E nee een ee emrgteer acres Screwdriver Wire stripper Crimp style terminal i Terminal crimping tool Connector Check supply voltage indicated on the actuator and make sure it is the same as the voltage applied before completing the wiring Wiring at different voltages will cause problems in the AV valve Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 10 ASAHI AV VALVES Installation Operation and Maintenance Manual Procedure 1 Loosen the screws with a spanner wrench and remove the prvermrrrnmnennnmmnmnnnnamnnanannminnnnn i cover from the actuator 2 Remove the plug of cable entrance with a spanner wrench 3 Install the connector into the cable entrance 4 Draw acable through the connector 5 Strip the cable with a wire stripper 6 Install a Crimp style terminal on the lead wire with a terminal crimping tool 7 Connect the terminal board with a screwdriver in accordance Fart page 7 Cable entrar Tighten the screws Short circuit or shocks may occur 8 Tighten the conn
16. ith a hexagon wrench and remove the cover of the actuator 2 Manually operate refer to page 11 the valve at the valve travel open or close adjusted with a spanner 3 Insert the specialized handle into the clutch stem and push to turn 30 so that the clutch shat can go down z7 i Tf the item 4 took place without the item 3 the limit switch may Z ts be damaged aoe ing Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 14 ASAHI AV VALVES 4 5 6 7 8 9 10 Choose the switch O for the full opened position or S for the full closed position Insert the specialized handle into the nearest adjusting shaft 3 fig 1 and turn the adjusting shaft to the direction which can be turned less then find a turning point from N to A In the state that the arrow indicates N turn from N to A and take out the handle Insert the specialized handle into the clutch stem turn the handle and set the clutch stem back to the original position Check whether the limit switch follows the valve operation properly by manual operation Refer to pagel1 Tighten the screws of the actuator cover with a spanner Fully close the valve by motor driven operation refer to page 9 and check to ensure that the travel indicator shows the full closed position 0 When the travel indicator shows incorrect position loosen and remove
17. main in the valve even if the pipeline is empty You may be injured A Fasten the cover in each cover equipped part Caution Insufficient fastening may allow rainwater dust or dirt to come in resulting in breakdown The actuator has been adjusted at the factory If reconfiguration or adjustment is needed do so correctly according to the relevant operation manual Failure to observe this instruction may cause malfunction or breakdown Each cover part is sealed with an O ring When laying wiring or in similar cases where the cover is removed and replaced ensure that the O ring is installed in the specified location and securely sealed Insufficient sealing may cause the actuator to be penetrated by rainwater or other foreign matter resulting in electric shock or breakdown pee Necessary items a Spanner wrench Protective gloves Safety goggles lt Disassembly gt Procedure Actuate 1 Completely discharge fluid from pipes 2 Fully close the valve by the motor driven operation or manual operation 3 Turn off the power source 4 Loosen the bolt nut 24 and remove it 5 Hold the actuator 73 up and remove it 6 Tum the diaphragm 3 left counter clockwise and remove it i 0 00a pee ee a ath e a Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 13 ASAHI AV VALVES Installation Operation and Maintenance Manual lt A
18. n a diagonal manner Refer to fig 1 Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm ASAHI AV VALVES Installation Operation and Maintenance Manual A G Tighten the bolts and nuts gradually with a torque wrench to the specified torque level in a diagonal manner Caution Avoid excessive tightening The valve can be damaged Fig 1 Recommended torque value Unit N m kgf cm Ib inch Fe yy 4 Nom Size 125 mm 5 150 mm 6 lz T 40 0 40 0 E Torque value 408 408 E 355 355 A amp Set valve support on the valve Caution When installing a pipe support by means of a U band or something similar take care not to fasten it too much Excessive tension may damage it Do not subject valve pump vibrations The valve may be damaged free Necessary items s vrinirireterinetenitetineten eieiei eiie iae icenimenemicimimimimiaimiminimiaens mimimimimimicimimememiarmimimemim im miami a Spanner wrench U type clamp with bolt i KRV AAS HAAVARE ei eee AA AR AA EAS A S OAA ee E E AS A A A EAA A AR A alee RREA AE E A ENA AR RAE A SR A EA E EAA Level installation Fix the valve stand 56 and the support stand with bolts Spread the rubber sheet on the pipe and secure pipe with U type clamp Perpendicular installation Fix th
19. ressible fluids even when the gas is under similar pressures used for liquids Therefore be sure to take the necessary safety precautions such as covering the piping with protective material For inquiries please contact us For conducting a leak test on newly installed piping be sure to check for leaks under water pressure If absolutely necessary to use a gas in testing please consult your nearest service station beforehand Before using the product check the operating power supply and the voltage specification on the nameplate Using a wrong voltage may cause equipment damage or malfunction Before manual operation ensure that the actuator is not activated by the motor A S Do not step on or apply excessive weight on valve It can be damaged Caution Do not use AV valves in a place where they may become submerged in water Do not apply a great impact or vibration to the actuator Any such practice may result in breakdown Do not use the valve in conditions where the fluid may have crystallized The valve will not operate properly Keep the valve away from excessive heat or fire It can be damaged or destroyed Avoid locations with corrosive gas or otherwise bad atmospheres Install a cover or something Always operate the valve within the pressure vs temperature range The valve can be damaged or deformed by operating beyond the allowable range Allow sufficient space for maintenance and inspection Select a
20. result in wire damage Ensure all covers are tightly fastened prior to operation Insufficient fastening may allow rainwater dust or dirt to come in resulting in breakdown When connecting wires be sure to observe the connection diagram and make the connections correctly Moreover after wiring ensure that the connections are securely made before turning on the power Failure to take this precaution may cause malfunction or breakdown Lee See eee O eee eee ee Se Ee ee oe ee ee ee Se eee See ee ee ee Le Lee bo Diaphragm Valve Type 15 Electric Actuated Type S 125 150mm 11 ASAHI AV VALVES Installation Operation and Maintenance Manual Pee See See SS eh eee eee eS a E a Seo eee be Se eee eee bee eee Se Se CR Se Sebo bese bec cee ey A Turn off the power source Caution If the power source is turned on during the manual operation you may be injured Procedure 1 2 3 Push the change lever toward the manual position In case that the lever can not be turned smoothly push it while turning the manual handle right or left Do not tum the handle forcibly at the right and left full operating positions Problem will develop Turm the manual handle while watching the valve travel indicator Right tum clock wise Shut direction Left turn counter clock wise Open direction Pull the change lever back to the motor driven position Motor Driven Operating Procedure Cee re PA A er om eee tan EA
21. ssembly gt Procedure 1 Shape the diaphragm 3 into fig 3 ioe caine ieee manne 2 Tum the diaphragm 3 right clock wise to install 3 Tighten the diaphragm 3 up completely and turn it left f N counter clockwise so that the center rib of diaphragm and the longer C VS rib of compressor agree with each other 4 Shape the diaphragm 3 into fig 4 5 Turn the manual handle left count clockwise to open the valve fully while watching the valve travel indicator 6 Put the actuator 73 on the body 1 7 Setthe Blot nut 24 and tighten the body 1 and the bonnet 71 a a estate eee tac atc As to the body tightening torque refer to Table 1 Table 1 Body tightening torque value Unit N m kgf cm Ib inch Nom Size 5 Disphrasm mana 125mm 5 150mm 6 Rubber 45 459 399 45 459 399 PTFE 45 459 399 45 459 399 12 Adjustment limit switch posse See eee Se ee ee ee eS ee ee ee ee Se ee eS ee ee A S Shut down the power on the equipment before connecting wires There are risks of electrical shock Warning depending on the level of operating voltage A S Be sure that the cover is put on during operation Cautior ay If you plan to operate limit switches at 1mA 100mA or 5 30V consult your nearest Asahi dealer Procedure 1 Tum off the power source and discharge fluid from pipes f tty completely Loosen screws w
22. valve material that is compatible with the media For chemical resistance information refer to CHEMICAL RESISTANCE ON ASAHI AV VALVE Some chemicals may damage incompatible valve materials Keep the valve out of direct sunlight water and dust Use cover to shield the valve The valve will not operate properly Perform periodic maintenance Leakage may develop due to temperature changes or periods of prolonged storage rest or operation When installing a valve provide an appropriate support Lack of such a support may cause the valve and piping to be overstrained resulting in damage or other defect In the case of malodor overheating or smoking turn off the power supply immediately Continued use despite an abnormality present may result ina fire If you detect any abnormalities be sure to consult the dealership where you bought the product or our service station nearest your premises and ask them to perform an inspection For manual operation be sure to use the handle furnished with the product by the manufacturer When using the product in explosive atmosphere ensure that the actuator complies with the explosion proof specifications required for that area Keep the ambient temperature of the installed location within the range 10 C and 50 C 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l 1 l I l I 1 l 1 l 1 l 1 l 1 l 1 l I l I l 1 l 1 1 l 1 l 1 l 1 l I l 1 1 l 1 l 1 l 1 l
23. y When installing a pipe support by means of a U band or something similar take care not to over tighten Excessive force may damage the pipe i When installing pipes and valves ensure that they are not subjected to tension compression bending impact or other excessive Caution The installed valve must never be opened or closed when foreign matter such as sand is present in the pipeline Use flat faced flanges for connection to AV Valves Ensure that the mating flanges are of the same standards Be sure to use sealing gaskets AV Gasket bolts nuts and washers and tighten them to specified torques When a non AV gasket is used a different tightening torque specification should be followed jatetik Necessary Iems aeee a a sa ae ed ete ew aaa a a lee Sohne tas eee a Torque wrench Procedure 1 Set the AV gasket between the flanges 2 Insert washers and bolts from the pipe side insert washers and nuts from the valve side then temporarily tighten them by hand A The parallelism and axial misalignment of the flange surface should be under the values shown in the Caution following table to prevent damage the valve A failure to observe them can cause destruction due to stress application to the pipe Nom Size ae lal Parallelism Misalignment a b 125 150 mm 1 0 1 0 5 6 0 04 0 04 3 Tighten the bolts and nuts gradually with a torque wrench to the specified torque level i
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