Butterfly Valves
Butterfly valve has simple structure, can be used for low-pressure pipe media. It achieves the opening and closing function by turning a closing piece, names as disc, around a shaft throughout the top to the bottom of it. Butterfly valves can be used to control the flow of various types of fluids, including air, water, steam, and a variety of corrosive media, slurry, oil, liquid metals and radioactive media. It is mainly composed of valve body with a circle shape in the middle, stem/shaft, disc and seat (seal ring) built in the body.
Butterfly Valves Dimensions and Info
Dimension
11/2″-48″
End Connection
wafer type, lug type, double flanged, U-section, grooved end
Body Material
gray iron(GG25), ductile iron(GGG40/50), cast steel(WCB), stainless steel(CF8,CF8M,CF3,CF3M)
Disc Material
ductile iron(nickle plated or nylon coated) caststeel(A216WCB) stainless steel(CF8,CF8M,CF3,CF3M) aluminium bronze(C954)
Seat Material
EPDM, Buna-N(NBR),PTFE, viton, metal seated
Steam material
SS410,SS416,SS304, SS316
Actuator
handle lever, worm gear, pheumatic actuator,chain operator
Standard
API 609, BS5155, MSS SP-67/68, EN593
