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Series 486 Stainless Steel Butterfly ValveStainless Steel Butterfly Valves
Series 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" (50 mm) to 20" (500 mm). Typical applications include loading and unloading of process material, sterile air control, and outlet valves for storage containers or hoppers.

Unique inflatable seat provides better seal, less wear, longer lifes

Posi-flate's unique inflatable seat design provides a better seal by utilizing air pressure to expand the seat against the disc, providing more sealing area and an even pressure distribution against the disc every time. The inflatable seat automatically compensates for wear when it inflates against the disc which extends the valve life considerably.

Torque requirements are substantially lower with the Posi-flate butterfly valve since the disc does not impinge the seat. The smooth profile of the disc provides minimum flow resistance and reduces material build-up.

Performance features
  • Inflatable seat compensates for disc and seat wear
  • Longer valve life
  • Minimal seat wear
  • No disc impingement
  • Ultra-low torque requirements
  • Lower actuator costs
  • More seal contact area
  • Excellent for abrasive and dry solids
  • Disc designed to prevent material buildup
  • Double shaft seals
  • Multiple bearings
  • Fail-safe monitoring

 

Temperature limits: -40° to 350° F (-40° to 175° C), varies with application and materials of construction.

Air supply: 115 PSIG (7.9 bar) maximum to seat, varies with application.

Working pressure: Full vacuum to 100 PSIG (6.9 bar), varies with materials of construction.

Operating torque: Varies with application.

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

Housing Gasket: Buna-N or silicone

Hardware: stainless steel

 
Stainless Steel Butterfly Valves
Series 486
Bulletin - English
 

 
Vannes Papillon Inox
Série 486
Bulletin - Français

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