Pressure Vacuum Relief Valve Pipe Away Model 850

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Technical Data

Sesco SKU:tp-056 Category: Brand:

Available on backorder

Description

The Model 850 is part of high performance pressure vacuum relief valves. The model 850 was designed with features to exceed the performance of standard valves on the market. Standard features include:

• The only dual guided (top and bottom} pallet for smoother valve stroke, less flutter and valve wear,
• Polyphenylene Sulfide (PPS), advanced composite thermoplastic material for seat and pallet providing superior resistance to corrosion, chemical attack, liquid and vapor adhesion, temperature extremes (-46° C to 260° C} and sticking due to valve seat freeze.
• Fully field replaceable pallet and seat assemblies without need for special tools or complex procedures which eliminates the need to send out for rebuilding or total valve replacement. (Can be maintained by in house maintenance personnel).
The model 850 pipe away design maintains a tight
seal until system pressure or vacuum exceed the set
pressure of the valve. When overpressure occurs the weighted pallet lifts, breaking the seal between the seat and pallet, allowing vapors to pass through the valve orifice and relieving the pressure or vacuum buildup. The valve reseals upon relief and remains sealed.

Features & Benefits

• Advanced composite thermoplastic (PPS} materials for seat and pallet provide superior resistance to corrosion, chemical attack, liquid and vapor adhesion, temperature extremes (-46° C to 260° C) and sticking due to valve seat freeze.
• Patented Saber Guide valve system provides for smooth valve stroke during operation and reduces valve wear.

• Exceeds the most stringent standards for allowable leakage and provides excellent set point accuracy.
• Fully field replaceable pallet and seat assemblies.
• Available in ANSI, DIN and JIS flanges.

 

Valve Setting Range

  • Model number: Model 850
  • Sizes Available: 2″(50mm), 3″(80mm), 4″(100mm), 6″(150mm), 8″(200mm), 10″(250mm), 12″(300mm)
  • Pressure: 2.0 to 138 mbar (with 2.2mbar increments)
  • Vacuum: 2.0 to 138 mbar (with 2.2mbar increments)