Vacuum Relief Valves

Vacuum Relief Valves allow a tank to vent (breathe in) during emptying and when thermal effects require.

Spring/Weight Operated

97Key Features of the Groth Vacuum Relief Valve include;

 

Key Features
  • Market leading sealing performance - API2000 states that a valve should hold 75% of its set point at constant flow of 15l / hour – Groth’s production standard is 90% in models up to an including 6”
  • Self Draining Pallets prevent build up of water and potential to freeze shut/open
  • Air cushion seat design creates superior seal and is less prone to sticking than o-ring type seals
  • There are no elastomers in Groth valves as they break down over time in common applications

 

As with all Groth equipment, their Vacuum Relief Valves are manufactured to the highest standards and offer market leading performance and longevity.

Groths Vacuum Relief Valves come with a range of standard and custom options as follows;

 

Models 1300 series
Sizes 2” to 12”
Vacuum Settings 2.1 mbar (0.002 bar) to 820 mbar (0.82 bar)
Options Free Venting outlet
  Pipe-away outlet
  Flame Arrester
  Steam Jacket
Operation Weight Loaded
  Spring Loaded
Mounting Orientation Top Mounted
  Side Mounted
Materials of Construction Aluminium
  Carbon Steel
  Stainless Steel
  Derakane (FRP)
  Furan (FRP)
  Exotics on request
Approvals ATEX

 

Pilot-Operated Vacuum Relief Valves

99Pilot operated vacuum relief valves allow a tank to vent (breathe in) during emptying and when thermal effects require, but with much higher pressure settings than a weighted or spring loaded valve.

Key Features of the Groth Pilot Operated Vacuum Relief Valve include;

 

Key Features

  • High Flow Capacity
  • Bubble tight to set pressure
  • Fully open at less than 10% above set pressure
  • Inherent backflow prevention
  • Easily adjustable blowdown
  • Film design seat meets EPA method 21
  • Full pipe bore seat nozzle

 

As with all Groth equipment, their Pilot Operated Vacuum Relief Valves are manufactured to the highest standards and offer market leading performance and longevity.

Groth Pilot Operated Vacuum Relief valves come with a range of standard and custom options as follows;

 

Models 1600 Series
Sizes 2” to 12”
Vacuum Settings 2.1 mbar (0.002 bar) to 820 mbar (0.82 bar)
Max. Operating Temp. 150 degC
Min. Operating Temp. 195 degC
Operation Pilot Operated
Mounting Orientation Side Mount
Materials of Construction Aluminium
  Carbon Steel
  Stainless Steel
  Multiple Pilot Valve Material Options
  Specials upon request
Approvals ATEX