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  PRODUCT Butterfly Valves Fire Safety Type |
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Under normal functional conditions, and with the disc in the closed position, it a fire occurs to the outside, then the second seat, the metal one, will come into operation after the first seat has been destroyed by the effect of the heat, thereby completely stopping the passage of the fluid |
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O- It provides reliable sealing performance over long periods. |
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Design Code
- ASME B 16.34 , API 609 , JIS B 7480
Face to Face Dimensions
- ISO 5752 , ASME B 16.10 , API 609
Pressure Rating
-JIS 10K/16K/20K, PN10/PN16/PN20,
-CLASS 150/300
Product Size
-50mm(2”) ~ 1200mm(48”)
Flange Drilling
-JIS B 2238 10K/16K/20K,
-ASME B 16.5& 16.47 CLASS 150/300
Operation
-LEVER/GEAR/MOTOR/PNEUMATIC ACT
Body Type
-FULL LUG, WAFER, FLANGE
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Test Inspection – API 598 / JIS B 2003
-DK Valves are guaranteed to seal perfectly (no visible leakage) in both flow directions.
-(Recommended flow direction : Pressure to shaft side)
Applications
-Water/Sea Water
-Steam and Gas Applications
-Crude-Oil similar to the P.T.F.E Construction
-General Hydrocarbon
Materials
-BODY : A216 WCB , A351 CF8/CF8M/CF3
-DISC : A351 CF8/CF8M/CF3
-SEAT : Nitrile / PTFE/ RTFE + METAL
-SHAFT : A276 T304/T316/T410/T630
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