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Serial No.: H–V040-E-13
Lug Butterfly valve Type 57L
（Material: PDCPD）
Userʼs Manual
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This Userʼs manual contains important information for safe use of our
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[Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD)
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Table of Contents
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Summary of Contents for AsahiAV 57L
- Page 1 After reading this manual, please be sure to keep it in a place where the user can see it at any time. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 1 -...
- Page 2 In the handling of the product, it is prohibited to do it in "Do not do it". In the handling of the product, it is forced by "contents to be carried out without fail". Forcing [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 2 -...
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Page 3: Table Of Contents
Daily inspection ................................28 Periodic inspection ................................29 11. Cause of malfunction and remedy ·················································································· 30 12. Disposal method of residual materials and waste materials ······································· 31 Inquiries ···································································································································· 32 [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 3 -... -
Page 4: Our Product Warranty Coverage
▶ Please observe the product specifications and precautions when using our products. We shall not assume any responsibility for any damage to the customer caused by the customer's negligence. However, this does not apply to damage caused [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 4 -... -
Page 5: Safety Instruction
(The strength of cardboard packaging decreases when it gets wet. Be very careful when storing and handling it.) ▶ After unpacking, make sure that the product is correct and that it meets the specifications. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 5 -... -
Page 6: Product Handling
▶ If the valve body and the seat are not wet, the valve body and the seat may not work properly because there is no lubrication. When operating the valve alone, operate with the valve body and seat wet or with water after piping. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 6 -... - Page 7 ▶ Before removing the secondary piping, remove the secondary fluid and lower the primary fluid pressure for safety. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 7 -...
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Page 8: Name Of Each Part
Stem retainer (A) [183] Sheet bush (A) [16] Handle (A) [184] Sheet bush (B) [17] Handle lever [185] O-ring (I) [18] [186] Rubber washer [19] Spring Upstream side Downstream side [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 8 -... -
Page 9: Side Gear-Type (80-250Mm)
[25] Gear box [28] Bolt (C) [157] Set screw (F) [158] Gasket (L) [183] Sheet bush (A) [184] Sheet bush (B) [185] O-ring (I) Upstream side Downstream side [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 9 -... -
Page 10: Product Specifications
Serial No.: H–V040-E-13 4. Product Specifications Model number table Relationship between maximum allowable pressure and temperature [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 10 -... -
Page 11: Piping Method
Serial No.: H–V040-E-13 5. Piping method Serious injury can result. Prohibition ▶ When hanging or slinging a valve, pay sufficient attention to safety, and do not enter under the load. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 11 -... - Page 12 Disc and the inner surface of the connection. (See Fig. 5-2.) Fig.5-1 Fig.5-2 Flange Disc Seat φD Disc Good Body [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 12 -...
- Page 13 ▶ Tighten the bolts and nuts of the connection flange diagonally to the specified torque. (risk of leakage or damage) Unit: N-m Size 80,100mm 125,150mm 200,250mm Torque 30.0 40.0 55.0 [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 13 -...
- Page 14 Length Number Length Number (mm) of bars of bars *2 ; Eight DIN standards are available. *3 ; DIN standard is M20. *4 ; DIN standard is 30. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 14 -...
- Page 15 To the length where the tips of the hexagonal bolts do not interfere with each other when the primary and secondary hexagonal bolts are tightened Please do it. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 15 -...
- Page 16 8) Tighten the screws diagonally to the specified torque value (see the above table) with a torque wrench. Do not over tighten.(risk of damage) ＜Before＞ ＜After＞ ＜Before＞ ＜After＞ Body [1] Flange Lug part Bolt, Washer Flange Lug-insert [1e] Bolt, Washer [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 16 -...
- Page 17 Size Thread Thread Length Number thread Length (mm) length Number of bars nominal d of bars Size *1; There are four DIN standards. *2; DIN standard is M20. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 17 -...
- Page 18 Use bolt B to connect the embedded brackets. 5) Gradually tighten to the specified torque value diagonally with a torque wrench. Do not over tighten. (risk of damage) Inserted [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 18 -...
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Page 19: Operation Method
When fully closed, the handle position is perpendicular to the fluid flow direction. When fully opened, the handle position is parallel to the fluid flow direction. Shut Open [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 19 -... - Page 20 ※ The above values are for reference only. (It is a measured value in the standard condition, and it varies depending on various conditions) ※ The gear-type operating force (N) is the value when the handle is operated with both hands. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 20 -...
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Page 21: How To Disassemble/Assemble Parts For Replacement
▶ Completely drain the fluid in the piping when replacing the valve or replacing parts. If the fluid does not escape, reduce the fluid pressure to zero. ▶ As some fluid remains in the valve, wear protective gloves and goggles. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 21 -... - Page 22 Push out the sheets [3] and discs [2]. 7) Remove the disc [2], seat bush (A) [183] and seat bush (B) [184] from the seat [3]. 8) Remove O-ring (C) [6] and O-ring (I) [185]. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 22 -...
- Page 23 The shaft bore "large" is at the top. The shaft hole "Small" is at the bottom. Convex part of the seat shaft hole Convex part of the seat bush [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 23 -...
- Page 24 (F). 8) Install the lever (gear box). 9) After assembly is complete, perform manual operation and check if the disc [2] fits sufficiently in the seat [3]. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 24 -...
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Page 25: Handle Mounting Method
2) Loosen the bolt and washer with a socket wrench and remove the handle. The valve can be damaged. Prohibition ▶ Do not apply excessive force to the cap when attaching or removing the cap. (risk of damage) [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 25 -... -
Page 26: Stopper Adjustment Method For Gear Type
4) Operate the valve manually to move the disc to the position to be opened. 5) Tighten the stopper with an Allen wrench. 6) Attach the fully open side cap of the gear box [25] by hand. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 26 -... -
Page 27: Inspection Item
▶ When removing the valve from the piping when replacing the valve or parts, completely remove the fluid from the piping before starting work. ▶ If any trouble is found, take the appropriate action referring to "11. Cause of malfunction and remedy." [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 27 -... -
Page 28: Daily Inspection
(Ref: 2. Safety Instructions) No odor Unusual odor Valve Remove the valve from the pipe and replace the valve. (sniffing) (Ref: 7. How to disassemble/assemble parts for replacement) [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 28 -... -
Page 29: Periodic Inspection
No scratches, Product damage Appearance of Remove the valve from the pipe and replace the cracks, or the product valve. deformation (Ref: 7. How to disassemble/assemble parts for replacement) [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 29 -... -
Page 30: Cause Of Malfunction And Remedy
Stem corroded or damaged Remove the valve from the piping, replace the relevant part, or replace the valve. (Ref: 7. How to disassemble/assemble parts for replacement) [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 30 -... -
Page 31: Disposal Method Of Residual Materials And Waste Materials
When burnt, toxic gas is generated. Forcing ▶ When disposing of the product or parts, please dispose of them according to the guidelines of each local authority by a professional disposal company. [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 31 -... -
Page 32: Inquiries
Contact the nearest dealer, our sales office, or our web website for inquiries about this product. [Userʼs Manual] Butterfly valve 57L (PDCPD) https://www.asahi-yukizai.co.jp/en Please note that the content of this manual is subject to change without notice. March 2024 [Userʼs Manual] Lug Butterfly Valve Type 57L (Material: PDCPD) - 32 -...
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