486 series
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Stainless Steel Butterfly Valves 486 ANSI and Metric Flange Compatible

All stainless steel butterfly valve The Series 486 inflatable seated butterfly valve from Posi-flate features a fully machined 316L stainless steel housing. The single piece disc and shaft is available in a number of materials including 316L stainless steel and hastelloy. The disc may be polished to a mirror finish or coated with PTFE, nylon or other high performance coating. The stainless steel valve is ideal for powders, granules, slurries and liquids and is available in sizes 2" (50mm) to 20" (500mm). Typical applications include loading and unloading of process material, sterile air...

Design features for reliable performance A. ACTUATOR MOUNTING FLANGE: Flange is designed for direct actuator mounting. B. BEARINGS: Multiple bearings substantially reduce operating friction and torque requirements, eliminating any metal-to-metal contact, thus preventing shaft galling and freezing. C. SHAFT SEALS: O-ring shaft seals insure positive sealing under the most adverse conditions. D. SEAT O-RING SEAL: O-ring provides long lasting positive seal of seat inflation pressure. E. MATERIAL SEAL: Land seal prevents material contamination of seat o-ring seal. F. AIR INLET PORT: Oversized...

Dimensions and Specifications Posi-flate Butterfly Valves Series 486 with Stainless Steel Housing Valve Size Approx. Weight Available Materials of Construction: Housing: 316L stainless steel housing with satin finish or polished finish Disc/shaft: Integral 316L stainless steel disc/shaft with standard satin polish or premium polish; hastelloy disc/shaft; PTFE coating Seat: White FDA Buna-N, white FDA silicone, white fluoroelastomer, black fluoroelastomer, black EPDM and others Bearings: Nylon, bronze or PTFE Shaft Seal: Buna-N or fluoroelastomer B Housing Gasket: Buna-N or silicone...