Tianjin Manufacturer Cast Iron Wafer Type Butterfly Valve
Driving Mode:Manual
Connection Form:Wafer
Structure:Centre Sealing
Seal Form:EPDM NBR
Valve Stem: Normal
Work Pressure: Pn10/16
Product Introduction
Butterfly valve
Introduction:
Normal Presure: PN1.6MPa
Suitable Medium: Water, Sewage, Air, Oil, Salts, etc.
Temperature: Low than 120 degree centigrade.
Size: DN40-DN1200
Body Flange Drilling: DIN2501; ANSI Class 125
Face to Face: DIN3202; ANSI B 16.10
Operations: Handle lever, wormgear
Main Material:
Body: Cast Iron
Disc: CS, Grey iron, GGG, SS304, SS416
Stem: CS, SS304, SS416
Seat: PTFE, EPDM, NBR.
The butterfly valve is one of the few OUTSHINE VALVE that are both efficient in isolating and regulating the flow of media. Like most quarter-turn valves, the butterfiy valve is also quick to open. The disc is attached to the stem. either through the former or the stem is at the back of the disc. The stem is attached to the handle that is either placed on top of the body or at its side.
Valve operation can be done manually, electronically or pneumatically. If electronically opened, a signal from a remotesource tells the gearbox located on top of the valve body to turn the stem so the disc also moves, If pneumatically-driven,a piston is attached to the side of the body. This will provide the air pressure needed to open the valve. This type of actuation operates the quickest according to many manufacturers.
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