486 series

Product catalog summary

Overview: The Series 486 inflatable seated butterfly valve by Posi-flate is designed with a fully machined 316L stainless steel housing. It features a single-piece disc and shaft available in materials such as 316L stainless steel and hastelloy, with options for a mirror finish or coatings like PTFE and nylon. This valve is suitable for handling powders, granules, slurries, and liquids, available in sizes ranging from 2" (50mm) to 20" (500mm).

Specifications: The valve operates within temperature limits of -40° to 350° F (-40° to 175° C) and can handle air supply up to 115 PSIG (7.9 bar). It supports working pressures from full vacuum to 100 PSIG (6.9 bar), with torque requirements varying by application.

Design Features: Key design elements include an actuator mounting flange for direct mounting, multiple bearings to reduce friction, O-ring shaft seals for positive sealing, and an oversized air inlet port for quick pressurization. The valve's split housing fits standard ANSI and metric flanges, and the inflatable seat design ensures a better seal and longer valve life.

Performance Features: The valve's inflatable seat compensates for wear, providing a longer lifespan and minimal seat wear. It requires ultra-low torque, reducing actuator costs, and is effective for abrasive and dry solids. The design prevents material buildup and includes double shaft seals and multiple bearings for reliability.

Materials of Construction: The housing is made of 316L stainless steel, with options for satin or polished finishes. The disc/shaft can be made of 316L stainless steel or hastelloy, with optional coatings. The seat materials include FDA-approved Buna-N, silicone, and fluoroelastomers, among others. Bearings and shaft seals are available in materials like nylon, bronze, PTFE, and fluoroelastomer.

Applications: Typical applications include loading and unloading process materials, sterile air control, and outlet valves for storage containers or hoppers.

Dimensions and Specifications: Detailed dimensions and specifications are provided for various valve sizes, indicating normal torque and approximate weight.

Catalog excerpts

Stainless Steel Butterfly Valves 486 ANSI and Metric Flange Compatible

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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 control,...

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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 inlet...

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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 Hardware:...

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