Butterfly valve, manufacture acc.to EN593, face to face length acc.to DIN3202 F4, flange acc.to DIN2501 Butterfly valve, rubber seated.double flange, double eccentric,Manufacture acc.to EN593Face to face length acc.to DIN3202 F4Flange acc.to DIN2501Body and disc of DI, CS, SSShaft of SSSeat of rubber.with bare shaft, manual, gear, electric, pneumatic or others. butterfly valve