Wafer Type Butterfly Check Valve

D ouble-Disc Butterfly Type Wafer Check Valve Specification: For BS 4504 BS EN1092-2 PN10 / PN16 flange mounting. Face-to-Face dimension conforms to ISO 5752 / BS EN558. Epoxy fusion coating. Pressure and Temperature ratings: Materials Usage: This kind of check valve is mainly used for systems...

Product Details


Double-Disc Butterfly Type Wafer Check Valve

Specification:
For BS 4504 BS EN1092-2 PN10 / PN16 flange mounting.
Face-to-Face dimension conforms to ISO 5752 / BS EN558.
Epoxy fusion coating.

Pressure and Temperature ratings:

Working Pressure

PN10 / PN16 

Testing Pressure

Shell: 1.5 times rated pressure,

Seat: 1.1 times rated pressure.

Working Temperature

-10°C to 80°C (NBR)

-10°C to 120°C (EPDM)

Suitable Media

Water, sewage etc.

 

Materials

Part

Material

Body

Cast iron / Ductile Iron/Carbon steel/ stianless steel

Disc

Ductile Iron + EPDM, stainless steel

Spring

Stainless Steel

Shaft

Stainless Steel

Seat Ring

NBR / EPDM

 

Usage:

This kind of check valve is mainly used for systems in the industries of petroleum, chemistry, textile, paper- making, water supply and drainage, metallurgy, energy etc.


Series pinch wafer check valves
Size: DN40-DN1200/1.5"-48"
End flange: ANSI B 16.1, ASTM B 16.47, EN 1092, AS 2129, ISO PN10/16, JIS B2212/2213, BS 10 Table D, BS 10 Table E
Face to face: ANSI B 16.10, API 609
Top flange: ISO 5211
Normal pressure: DN40-DN600(1.5"-24") PN1.0/1.6MPa(150/200PSI) DN700-DN1200(28"-48") PN1.0MPa(150PSI)
Body: Cast Iron/Ductile Iron/WCB/Carbon steel/AL-Bronze/CF8, SS304/CF8M, SS316
Disc: Ductile Iron/Ni-plated ductile iron/Nylon-plated ductile iron/AL-Bronze/Rubber lined Disc/1.2501/1.4529/CF8/CF8M/Hastelloy Alloy/Monel

Stem: SS416/SS304/SS316/SS431/17-4pH/Monel/Carbon steel 45/45#
Seat: NBR/Hypalon/EPDM/Neoprene/NR/Wear-Resistant EPDM/Viton/Silicon/Heat-Resistant EPDM/White EPDM/EPDM/PTFE
Suitable temperature: Normal Temperature -45 ~150
Medium: Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc. 

Product picture display:

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