Butterfly valve is used for isolating or regulating flow and its function allows for quick shut off. There are many different kinds of butterfly valves, each adapted for different pressures and different usage in the industry.
Size: DN25 - DN1200
Pressure Range: PN1.0 - PN42
Suitable Temperature: -15℃ - 150℃
Shaft: 416, 410, stainless steel.
Sealing: NBR, EPDM or customized.
Seal Material: EPDM, NBR, PTFE,RPTFE, VITON, etc
Body Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel.
Disc: Ductile iron (nickel coated), GGG25/GGG20/GGG50/aluminum bronze, stainless steel.
Operation Type: Lever, Gear, Electric, Pneumatic, Hydraulic
Suitable Mediums: Fresh or waste water, sea water, sewage, vapor, air, oil, etc.
Basic Design: BS5155
Face to Face Dimension: BS5155
Inspection & Testing: API 598
Flanged End Dimension: BS4504 PN10,DIN2501 PN10,ISO 7005 PN10
1. The valve is equipped with eccentric tilting tapered valve seat sealing ring for the purpose if pressing out the sealing surface has small frictional resistance. When shutting off, it cleses more and more, so this makes sealing performance reliable, Opening can ensure that the sealing.
2. The special geometric structure makes the butterfly valve free of defect that other butterfly balves are unable to be sealed will due to excessively opening, so as to gurantee good sealing of the surface.
3. The double eccentric butterfly valve structure can gurantee that the valve fundtions mormally under high prssure and overcome the shortcomings that other valve easily leak due to sest deformation when they work under high pressure.