gearbox butterfly valve Model: D131 D134(depending on the brand of actuator) Pressure: PN10, PN16 Size: 2'' 24'' Working temperature: -10oC 110oC Applicable medium: Raw water, Drinking water, Sea water, Salts, Alcohols, Weak base, Natural gas, Air, Food, etc. Materials: Body: ductile iron/cast ironDisc: Ductile iron with Nickel-plated/Ductile iron with Nylon 11 coated/SS304/SS316Seat: EPDM/NBRShaft: 45#carbon steel/SS416