FIG170 Pressure and Vacuum relief valves.

The Pressure and Vacuum Relief Valve relieves excess air or gas pressure and prevents formation of a vacuum that could cause the vessel to buckle due to external pressure. Available in SG Iron & bronze with stainless steel internals.

Size Range:

• DN15 (1/2”) TO DN100 (4”)

Pressure Range:

• DN15 (1/2”) TO DN25 (1”) = Maximum 13.0 BAR.G
• DN40 (1 ½”) TO DN100 (4”) = Maximum 13.0 BAR.G

Pipe Connections:

• Male X Female: BSP, BSPT, NPT or Flanged

Features and Benefits:

• Able to accommodate customer’s connection requirements.
• Full Cat IV PED approval.
• Quality assurance approved to BS EN ISO 9001: 2015

Testing:

All Gresswell Relief Valves are given a hydraulic seat tightness test before leaving the factory and all valves are supplied pre-set. Special tests or witness testing can be arranged at extra cost.

Flow Substance:

Liquid

Gas

Applications:

Compressor, pipeline and reciever protection.

High pressure.