Concentric Rubber lined Butterfly Valve
Concentric butterfly valves has a resilient rubber lined sealing with a metallic disc, that is placed concentrically between the shaft center line and the disc center line.
This valve type are designed to have an optimal mix of structural stability,low torque, flow efficiency and effective sealing properties. It’s widely used in water treatment and other industries.
This butterfly has the feature of light weight manufacture, compact design, low maintenance and easy operation.
If need the valve in high temperature and high pressure, need to use eccentric butterfly valve instead.
Main materials ：carbon steel, stainless steel,cast iron
Body: WCB, CF8, CF8M, CF3, CF3M, CAST IRON, GGG 40/50,GG25,etc.
Sealing material:NBR,EPDM, VITON,PTFE
Size range(s)：NPS 2 - 48 (DN50 - 1200)
Pressure rating：ASME Classes 150 -300,(PN6-PN25)
Operation: Lever, Gear, Electric, Pneumatic, Hydraulic
Standards:ASTM, ANSI,AWWA, JIS,BS, GOST, DIN etc.
Design Standard: API 609, MSS SP-67, MSS SP-68, BS 5155
Face to Face: API 609, ASME B16.10, BS 5155, EN1092
End Connection: ASME B16.5, ASME B16.47
Inspection and Test: API 598/API6D/EN12266-1