Swing Check Valve
Contents
1. 354 100 200 250 40 0 pit 102 204 py 225 408 89 177 221 354 5 After completed the assembly make sure that there is no leakage under the water pressure test Swing Check Valve 10 ASAHI AV VALVES Installation Operation and Maintenance Manual 9 Inspection items A a Perform periodic maintenance Leakage may develop due to temperature changes or over periods of Caution prolonged storage rest or operation O Inspect the follow items Check for any flaw crack or deformation on the outside Check whether fluid leaks to the outside Check whether tightness of bolt nut 10 Troubleshooting Problem Cause Treatment The back pressure is low Check for the back pressure The Fluid is leaking past the fully closed position Seat is worn Replacement Solid particles have lodged in the Clear the solid particles from the valve valve O ring is worn Replacement Fluid leaks from the valve Packing is worn Replacement Looseness of bolts nut Retighten 11 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 Swing Check Valve 11 ASAHI AV VALVES Installation Operation and Maintenance Manual Swing check valve ASAHI AV VALVES Distributor Asahi Orga2. uI Qum f Oar Sa m a gt s g o 3 z gt 5 z No DESCRIPTION No DESCRIPTION No DESCRIPTION 1 Body 5b Seat holder 5 5g Pin 2 Bonnet 5c Bolt A 5 5j Seat 3 Shaft 5 5d Arm 7 Gasket B 4 Plug 5e Washer 8 O ring B 5 5a Disc 5f Nut A 9 Bolt Nut The assembly of Disc 5a 5j is not disassembly Swing Check Valve ASAHI AV VALVES Installation Operation and Maintenance Manual 5 Working pressure vs temperature Nominal size 15mm 80mm a 1 Nominal size 200mn 5 Swing Check Valve ASAHI AV VALVES Installation Operation and Maintenance Manual 6 Seal performance Water Pressure at R T Unit MPa kgf cm Nominal Size Seat Vertical Piping Horizontal Piping mm inch Shut the Disc Pass the Water Shut the Disc Pass the Water 15 2 EPDM others 0 02 0 2 0 01 0 1 0 02 0 2 0 01 0 1 PTFE 0 03 0 3
3. If the part is worn replace it Swing Check Valve 9 ASAHI AV VALVES lt Assembly gt lt Nominal size 15mm 20mm 1 2 3 4 gt Installation Operation and Maintenance Manual 1 The produce of assembly is the almost reverse of its disassembly 2 Only seat can t be replaced When the seat has necessity to be replaced replace the assembly part of seat 3 After completed the assembly make sure that there is no leakage under the water pressure test lt Nominal size 25 200mm 1 8 gt 1 The produce of assembly is the almost reverse of its disassembly 2 Only seat can t be replaced When the seat has necessity to be replaced replace the assembly part of seat 3 When the bonnet 2 is replaced make sure that the arm stopper direction of the bonnet 4 Tighten the bolt nut 9 diagonally and equally torque to fix the body 1 and bonnet 2 Bonnet tightening torque value Unit N m kgf cm Ib inch Torque Torque Nom Size Rubber PFA Nom Size Rubber PFA O ring O ring O ring O ring 30 0 35 0 ie 10 0 20 0 A 306 357 ae 102 204 266 310 89 177 30 0 35 0 150 250 as 306 357 Pi 153 255 266 310 133 221 60 100 200 35 0 A 61 102 pe 204 357 53 89 177 310 80 150 200 40 0 ee 82 153 pee 204 408 71 133 177 354 80 150 2350 40 0 Ra 82 153 eae 225 408 71 133 221
4. insert washers and nuts from the valve side and temporarily tighten them by hand Spanner wrench following table to prevent damage the valve The parallelism and axial misalignment of the flange surface should be under the values shown in the A failure to observe them can cause destruction due to stress application to the pipe Unit mm inch Nom Size RR ins Peers misalignment a b 15 32mm 1 2 1 1 4 1 0 0 04 0 5 0 02 40 80mm 1 1 2 3 1 0 0 04 0 8 0 03 100 150mm 4 6 1 0 0 04 1 0 0 04 200mm 8 1 5 0 06 1 0 0 04 Bolt Nut Washer For many flanges specification A Caution Axial misalignment Parallelism 3 Using a torque wrench tighten the bolts and nuts gradually to the specified torque in a diagonal manner Caution Refer to fig 1 Recommended torque value A S Tighten the bolts and nuts gradually with a torque wrench to the specified torque level in a diagonal manner Unit N m kef cm Ib inch Nom Size 15 20mm 25 40mm 50 65mm 80 100mm 125 150mm 200mm 1 2 3 1 A 1 1 2 2 A 1 2 3 4 6 8 Rubber 8 0 82 71 20 0 204 177 22 5 204 199 30 0 306 265 40 0 408 355 55 0 561 488 F ee 175 179 155 20 0 204 177 22 5 204 199 30 0 306 265 40 0 408
5. 355 55 0 561 488 Swing Check Valve 8 ASAHI AV VALVES Installation Operation and Maintenance Manual 8 Disassembling method for replacing parts A a Be sure to conduct a safety check on all hand and power tools to be used before beginning work Warning Wear protective gloves and safety goggles as fluid remain in the valve even if the pipeline is empty You may be injured Do not change or replace valve parts under line pressure Be sure to use sealing gaskets AV Gasket bolts nuts and washers and tighten them to specified torque When a non AV gasket is used a different tightening torque specification should be followed Torque wrench Spanner wrench Protective gloves Safety goggles Bolt Fora shaft Disassembly lt Disassembly gt 1 Drain fluid completely from the pipe line 2 Loosen the connecting bolts and nuts and remove the valve from pipeline if required 3 lt ln case of 15 20mm 1 2 3 4 gt Loosen the bonnet 2 and remove it from the body 1 lt In case of 25 200mm 1 8 gt Loosen the bolts and nuts 9 and remove the bonnet 2 4 Loosen the plug 4 and remove it Thrust the bolt to the threaded hole of shaft 3 and pull out the shaft from the body Threaded Hole Size of the Bolt Nom Size 15 40mm 50mm 65 80mm 100 200mm 1 2 1 1 2 2 2 1 2 3 8 Required Bolt Size Threaded Size M4 M5 M6 M8 5 Check the worn of all parts
6. 0 01 0 1 0 03 0 3 0 01 0 1 0 3 4 EPDM others 0 02 0 2 0 01 0 1 0 02 0 2 0 01 0 1 PTFE 0 035 0 35 0 01 0 1 0 035 0 35 0 01 0 1 25 I EPDM others 0 03 0 3 0 01 0 1 0 035 0 35 0 01 0 1 PTFE 0 05 0 5 0 01 0 1 0 06 0 6 0 01 0 1 112 EPDM others 0 03 0 3 0 01 0 1 0 035 0 35 0 01 0 1 PTFE 0 05 0 5 0 01 0 1 0 06 0 6 0 01 0 1 50 2 EPDM others 0 03 0 3 0 01 0 1 0 035 0 35 0 01 0 1 PTFE 0 05 0 5 0 01 0 1 0 06 0 6 0 01 0 1 65 212 EPDM others 0 03 0 3 0 01 0 1 0 035 0 35 0 01 0 1 PTFE 0 05 0 5 0 01 0 1 0 06 0 6 0 01 0 1 80 3 EPDM others 0 035 0 35 0 01 0 1 0 04 0 4 0 01 0 1 PTFE 0 055 0 55 0 01 0 1 0 06 0 6 0 01 0 1 100 4 EPDM others 0 035 0 35 0 01 0 1 0 04 0 4 0 01 0 1 PTFE 0 06 0 6 0 01 0 1 0 065 0 65 0 01 0 1 125 5 EPDM others 0 035 0 35 0 01 0 1 0 04 0 4 0 01 0 1 PTFE 0 06 0 6 0 01 0 1 0 065 0 65 0 01 0 1 150 6 EPDM others 0 04 0 4 0 015 0 15 0 045 0 45 0 01 0 1 PTFE 0 065 0 65 0 015 0 15 0 07 0 7 0 01 0 1 200 8 EPDM others 0 04 0 4 0 02 0 2 0 045 0 45 0 015 0 15 PTFE 0 07 0 7 0 02 0 2 0 07 0 7 0 015 0 15 Data mentioned in the table above is reference only 7 Installation procedure A S 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 befor
7. ASAHI AV VALVES Swing Check Valve User s Manual Swing Check Valve D 2 3 4 T 8 Installation Operation and Maintenance Manual Serial No H V013 E 13 Contents Be sure to read the following warranty clauses of our product POPI EEIE EE EI 1 General operating instructions PAARE TE ETAETA 2 General instructions for transportation unpacking and storage 3 J ame of parts 1i 4 Working pressure vs temperature i 6 Seal performance rent 7 Installation procedure 7 Disassembling method for replacing parts 9 Jnspection items mn 11 10 Troubleshooting e 11 Handling of residual and Waste materials ences 11 ASAHI AV VALVES ASAHI AV VALVES Installation Operation and Maintenance Manual 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 such a Caution manner lt Prohibited amp Mandatory Action Signs gt S Prohibited When operating the valve this symbol indicates an action that should not be taken as Mandatory action When operating the valve this symbol i
8. e 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 When installing a pipe support by means of a U band or something similar take care not to over tighten Caution Excessive force may damage the pipe When installing pipes and valves ensure that they are not subjected to tension compression bending The valve is applicable to both types vertical and horizontal piping In the case of vertical piping use the valve in applications where the fluid travels upwards Install the piping while matching the arrow on the valve body with the flow direction of the fluid l l l l l l l l l l l l l l I l I l l l l H impact or other excessive stress i i l l l I l l l l l l l l l l l l l l l l l l l l m M k Swing Check Valve 7 ASAHI AV VALVES Caution Be sure to use sealing gaskets AV Gasket bolts nuts and washers and tighten them to specified torques A Use flat faced flanges for connection to AV Valves Ensure that the mating flanges are of the same standards Installation Operation and Maintenance Manual When a non AV gasket is used a different tightening torque specification should be followed Necessary items AV gasket Torque wrench Procedure 1 Set the AV gasket between the flanges 2 Insert washers and bolts from the pipe side
9. excessive weight on valve It can be damaged Caution Do not use the valve in conditions where the fluid may have crystallized The valve will not operate properly ey Keep the valve away from excessive heat or fire It can be damaged or destroyed 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 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 Use the valve at a pressure exceeding the minimum operating differential pressure Check the effective head A temperature change and creep during storage or use may loosen the bonnet Inspect the valve and retighten the bonnet and body Swing Check Valve 2 ASAHI AV VALVES Installation Operation and Maintenance Manual 3 General instructions for transportation unpacking and storage A S When suspending and supporting a valve take care and do not stand under a suspended valve i Warning A S This valve is not desi
10. gned 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 These chemicals may cause damage to the valve When transporting a valve do not carry it by the handle amp 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 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 Swing Check Valve 3 ASAHI AV VALVES Installation Operation and Maintenance Manual 4 Name of parts Nominal size 15 20mm 1 2 3 4 No DESCRIPTION No DESCRIPTION No DESCRIPTION 1 Body 5a Disc 5 5j Seat 2 Bonnet 5 5b Seat holder 5k O ring A 3 Shaft Sh Bolt B 7 Gasket B 4 Plug 5i Nut B 8 O ring B The assembly of Disc Sa 5K is not disassembly Swing Check Valve ASAHI AV VALVES Installation Operation and Maintenance Manual Nominal size 25 200mm 1 8 otto Occ Oa m
11. ndicates 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 which 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 re
12. nic Chemicals Industry s homepage http www asahi yukizai co jp en Information in this manual is subject to change without notice 2011 10 Swing Check Valve
13. placement 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 Swing Check Valve 1 ASAHI AV VALVES Installation Operation and Maintenance Manual 2 General operating instruction A es Using a positive pressure gas with our plastic piping may pose a dangerous condition due to the repellent Warning force particular to compressible 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 A S Do not step on or apply
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