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GNB G20P (SOP) 20" ASA Vacuum Gate Valve

Price: $8,800.00
GNB G20P (SOP) 20" ASA Vacuum Gate Valve
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GNB G20P (SOP) 20" ASA DN 500mm Vacuum Gate Valve

Valve type - G for Gate
Opening size - 20 for 20 inch diameter opening  20” (DN 500mm)
Actuation type - P for Pneumatic

Material - S for 304 stainless steel
Shaft seal - O for dual o-ring seals
Indicators - P for magnetic (reed)


  • Valve body / gate construction: 304L stainless steel or mild steel
  • Surface finish: glass bead blast
  • Dual o-ring sealed shaft
  • Actuator: pneumatic
  • Magnetic position indicators
  • Viton or buna o-rings at flange, gate, bonnet, and shaft
  • Lubricated for life – not affected by contaminants
  • No springs – long life mechanism designed for 2 million cycles
  • Minimal maintenance – does not require removal of valve body

Questions? Please call our toll free number at 866-332-0500 or send an email to our sales team!

  • Leak rate: < 1 x 10-9 std cc/sec He
  • Vacuum rating: 1 x 10-7 torr (1.3 x 10-7 mbar)
  • Seals in either direction with max differential pressure across gate: 1.5 atm (1.47 bar)
  • Max operating temperature: 400°F (200°C)
  • Mounting position: Any
  • Air to open / air to close
  • Air pressure required: 80 - 120 psig (5.5 - 8.3 bar)

Dimensions = 81" overall length, 28" wide, 4.51" flange between pump and chamber
Bolts (1 1/8")

Request for Quote

Need modifications to this item? PTB Sales' expert team of engineers can configure products to your specific needs. Please follow the above link, and fill out the quote form.

GNB G20P (SOP) 20" ASA DN 500mm Vacuum Gate Valve
GNB Gate Valves
Model Flange ID (inch)
5VA-249AC ANSI 24"

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