Inflatable Seated Butterfly Valves Series 435, 436
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butterfly valves

Performance Features • Inflatable seat compensates for disc and seat wear • Longer valve life • Minimal seat wear • Ultra-low torque requirements • Lower actuator costs • More seal contact area • Proven excellent for abrasive • Disc designed to prevent material build-up • Double shaft seals • Triple bearings • Fail-safe monitoring Less friction, less wear, longer life. Posi-flate's new butterfly valve with an in- flatable seat is a dramatic breakthrough over conventional butterfly valves for dry solids processing. The seat design is the secret to longer life in two critical ways. It has...

designed for easy actuator mount- various valve sizes. ring simplifies bearing and seal removal and ensures positive bearing retention. substantially reduce operating friction and torque requirements contact, thus preventing shaft D. SHAFT SEALS—Double U-cup shaft seals with backup ring insures positive sealing under the most adverse conditions. E. AIR INLET PORT—Over-sized inlet port allows quick valve pressurization/ F. DISC/SHAFT—Integral stainless steel disc and shaft with smooth, contoured surfaces provides minimum resistance to flow and reduces material build-up. steel shaft can be...

Temperature limits: vary with materials of Air supply: 115 PSIG maximum to seat Working pressure: 100 PSIG maximum Single-housing design with disc and shaft. Split-housing design with integral disc and butterfly valves 1125 Willow Lake Blvd. Available Materials of Construction Housing: Ductile iron. Resilient Seat: Polyurethane, Disc: Cast ductile iron, cast 316 stainless steel (satin finish or polished finish). Disc Screws: Zinc-plated carbon steel, stainless steel. Bearings: Nylon, bronze. Seal Insert: Nylon. Shaft: Zinc-plated carbon steel. Shaft Seal: Buna-N. Housing Gasket: Buna-N...