Adjustable Pressure Relief Valves

adjust-press-relief

Adjustable Pressure Relief Valves

£300£311

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TECHNICAL SPECS – CLICK HERE

Adjustable Pressure Relief Valves

Vacuum systems are only designed to operate under external (atmospheric) pressure. LewVac adjustable pressure relief valves (PRV’s)offer a means of protecting vacuum vessels against internal over-pressurization. There are many scenarios in which rapid pressure buildup inside a vacuum vessel may occur, such as a runaway gas back-fill operation. In addition to protecting delicate instruments and equipment, a pressure relief valve also minimizes risk of injury to system operators and other lab personnel.

How do they work?

Pressure build-up inside a vacuum vessel pushes on a spring loaded, elastomer sealed, piston. Once the pressure relief valve’s calibrated pressure limit is reached, the piston is displaced breaking (disengaging) its seal and providing instant pressure relief in the vessel. Unlike single use ‘burst disc’ devices, a pressure relief valve’s unique design allows it to be used over and over.

For systems operating at high vacuum pressure regimes, pressure relief valves (PRV’s) are the economical alternative to single-use burst disc products. Standard pressure relief valves are factory-calibrated for a 2 PSI (adjustable from 0.5-2 PSI) or 6 PSI (adjustable from 4-11 PSI).

Features:
• Ideal for protection against system over pressure.
• Viton® sealed.
• Adjustable pressure settings.
• Other configurations available on request.

Specifications:

Material  :  St.St. & viton®

Temperature range : -20 to 150°C (200°C*)

Vacuum range  :  Atm to 1×10-8 mbar

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* – Increased limit for intermittant use.


Product CodeDescriptionPriceQuantityPDF & STP
PRV-2PSI-16CF DN16CF MOUNTED PRESSURE RELIEF VALVE 2 PSI (GAUGE) £300
PRV-2PSI-40CF DN40CF MOUNTED PRESSURE RELIEF VALVE 2 PSI (GAUGE) £311
PRV-6PSI-40CF DN40CF MOUNTED PRESSURE RELIEF VALVE 6 PSI (GAUGE) £311
PRV-2PSI-16KF DN16KF MOUNTED PRESSURE RELIEF VALVE 2 PSI (GAUGE) £300
PRV-2PSI-40KF DN40KF MOUNTED PRESSURE RELIEF VALVE 2 PSI (GAUGE) £311
PRV-6PSI-16KF DN16KF MOUNTED PRESSURE RELIEF VALVE 6 PSI (GAUGE) £300
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