waffer type butterfly vales, soft seal, lever operated , blue painted Wafer Type Buttefly Valve Model: BV4000WSize: ... PN10 PN16Surface: Electric Fussion Epoxy Powder Coated Actuator: Hand Lever Worm Gear Penumatic Electric Flange drilling standard: BS4504 BS10 ... ... Long service life, free passage, low resistance coefficient.Suitable for control of water, seawater, sewage, oil, air, vapor, food, ...