Technical User`s Guide - Gate Valves
Contents
1. or fire It can be damaged or destroyed ASAHI AV VALVES For the Owner and the Installing Contractor GATE VALVES ASAHI AM User s Guide Serial No UA 009E General Operating Instructions A Q Be sure to conduct a safety check on all hand and power tools to be used before beginning work Wamins 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 nee Excessive force may damage the pipe The installed valve must never be opened or closed when foreign matter such as sand is present in the pipeline D 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 Use an external screw type Rising Stem for fluids containing slurry or crystal like substance Use an internal screw type Non Rising Stem may disable opening and closing 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 ma2. For the Owner and the Installing Contractor GATE VALVES ASAHI AV User s Guide Serial No UA 009E Read and use the information contained within these documents This User s Guide contains information important to the proper installation maintenance and safe use of the GATE VALVE store in an easily accessable location Prohibited When operating the valve this symbol indicates an action that should not be taken Mandatory action When operating the valve this symbol indicates mandatory actions that must be adhered to General Information for Transportation Unpacking and Storage A OQ When suspending and supporting a valve take care and do not stand under a suspended valve arning A OQ This valve is not designed to handle impacts of any kind Avoid throwing or dropping the valve Gadyen 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 Q 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 prod
3. ies As for details refer to the User s manual GATE VALVE No H V011E ASAHI ORGANIC CHEMICALS INDUSTRY CO LTD htp www asahi yukizai co jp en Valves and Piping System Administration Overseas Department World Trade Center Bldg 20F 4 1 Hamamatsu cho 2 Chome Minatoku Tokyo Japan Tel 81 3 3578 6015 Fax 81 3 3578 6025 Bangkok Representative Office 50 GMM Grammy Place Tower 15th Floor Sukhumvit 21 Road Asoke North Klongtoey Wattana Bangkok 10110 Thailand Tel 66 2 665 9938 Fax 66 2 665 9939 Europe Representative Office Kaiser Friedrich Promenade 61 D 61348 Bad Homburg v d H Germany Tel 49 6172 9175 0 Fax 49 6172 9175 25 Shanghai Branch Office RM 1305 Orient International Plaza Part C No 85 Lou Shan Guan Road Shanghai China 200336 Tel 21 6278 7862 Fax 21 6278 7892 ASAHI AMERICA Inc 35 Green Street P O Box 653 Malden Massachusetts 02148 U S A Tel 1 781 321 5409 Fax 1 781 321 4421 Information in this manual is subject to change without notice 201107 4 A EEE
4. r 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 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 Inquir
5. t damaging it 125 150 5 6 200 250 8 10 30 0 306 266 40 0 408 354 ASAHI AW Serial No UA 009E Se Y ES 4 ji D i CP ap Unit Nem kgf cm lb inch 300 350 8 10 55 0 561 487 60 0 612 531 Sealing Tape ASAHI AV VALVES For the Owner and the Installing Contractor GATE VALVES ASAHI AM User s Guide Serial No UA 009E Handling of Residual and Waste Materials A Q 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 Product Warranty Be sure to read the following description of our product warranty 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 othe
6. terials 2 Set the AV gasket between the flanges Insert washers and bolts from the pipe side insert washers and nuts from the valve side then temporarily tighten them by hand Tighten the bolts and nuts gradually with a torque wrench to the specified torque level in a diagonal manner Fig 4 lt Axial Misalignment and Parallelism of Flanged face gt Unit mm inch Nom Size Axial Misalignment Parallelism a b 40 80 1 1 2 3 1 0 0 04 0 8 0 03 100 150 4 6 1 0 0 04 1 0 0 04 200 350 8 14 1 5 0 05 1 0 0 04 lt Recommended Torque Value gt Nom Size 40 1 1 2 Torque Value 20 0 204 177 Threaded End A Caution 50 65 2 2 1 2 80 100 3 4 22 5 230 200 Make sure that the threaded connections are plastic x plastic Metallic thread can cause damage Wrap the threaded joints on our plastic piping with sealing tape Using a liquid sealing agent or liquid gasket may cause stress cracks Environmental Stress Cracking Our product warranty shall not apply in case of said use even when said use is unavoidable Avoid excessive tightening The valve can be damaged 1 Preparation The seal tape is wound to the Male threaded adapter 2 to 3 complete wraps around the male threads are sufficient 2 Connection Tighten the external thread of the joint and the end connector hand tight Using the spanner wrench screw in the end connector by turning 180 360 carefully withou
7. ucts check that they are defect free and meet the specifications When transporting a valve do not carry it by the handle Inspection Items A Q L Check for flaw crack or deformation on the valve Check for leaks to the outside or inside aution L Check for the smoothness of handle operation O Check that all fasteners are tight General Operating Instructions 20000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000I0000OO00HOO Q Using a positive pressure gas with our plastic piping may pose a dangerous condition due to the repellent 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 Do not change or replace valve parts under line pressure Warning Do not step on or apply excessive weight on valve It can be damaged autioh Do not use the valve in conditions where the fluid may have crystallized The valve will not operate properly Do not use the valve to fluid containing slurry The valve will not operate properly Q Keep the valve away from excessive heat
8. y develop due to temperature changes or periods of prolonged storage rest or operation When installing pipes and valves ensure that they are not subjected to tension compression bending impact or other excessive stress When operating the handle be sure to do so with your hand Using a tool may damage the handle When the GATE VALVE is laid underground or it exposes with concrete Fig 1 Bury the GATE VALVE after putting the hand wheel into the state of the shut close position Concrete For the Owner and the Installing Contractor GATE VALVES User s Guide Installation Procedure The connection method of the GATE VALVE are Nominal size is 40mm 350mm 1 14 Flanged End Nominal size is 32mm 50mm 1 2 Threaded End Refer to the following details Flanged End A OQ Take care not to over tighten the Union Nut The valve can be Caution damaged Q The parallelism and axial misalignment of the flange surface should be under the values shown in the following table to prevent damage to the valve A failure to observe them can cause destruction due to stress application to the pipe Fig 3 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 1 Cleaning Confirm the flange face area is clean and free of dirt or foreign ma
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