Pressure Relief Valves

Product catalog summary

Overview: This document from Brownell Ltd. discusses the prevention of damage caused by pressure differentials in equipment and transit containers. It highlights the importance of installing relief valves to manage pressure and vacuum changes due to temperature and altitude variations.

Key Features:

Fully automatic operation with optional valve-operated indicators.
Wide operating temperature range from -30ºC to +90ºC.
Two-way valves for both pressure and vacuum relief.
Manual override for pressure equalization.
Optional protection against water spray.
Flow rates vary from cc/min to litres/h.
Available in materials such as aluminum, brass, stainless steel, and plastic.

Applications:

Transit, storage, and missile containers.
Pressure-sensitive applications.
Air portable containers and sealed enclosures.
Non-return valves and outgassing protection.
Airborne equipment and gas pipelines.

Specifications:

Operating temperature: -30ºC to +90ºC.
Pressure or vacuum opening: minimum 250N/m² (1 inch WG).
Pressure opening: maximum 206 KN/m² (30 PSI).
Vacuum opening: maximum –68.9 KN/m² (-10 PSI).
Opening tolerance: ±5%.
Stability: ±10%.

Catalog excerpts

Prevent damage caused by pressure differentials Pressure and vacuum differentials will occur in equipment and transit containers when they are subject to changes in temperature and/or altitude. The installation of relief valves in equipment and transit containers will prevent damage caused by pressure of vacuum differentials. The use of relief valves allows designers to reduce the constructional strength and weight in equipment or transit containers. Fully automatic Optional valve operated indicator Wide operating temperature range Two way valves for pressure and vacuum relief Fully automatic opening and closing Manual override facility for equalisation Protection against waterspray (optional) Flow rates range from cc/min to litres/h Low cohesion providing reliable opening Available in aluminum, brass, stainless steel and plastic Transit/storage/missile containers Pressure sensitive applications Air portable containers Non return valves Out gassing protection Airborne equipment Sealed enclosures Gas pipelines Pressure Relief Valve mounted to a transit container Specification Operating temperature: -30ºC to +90ºC Pressure or vacuum opening: minimum 250N/m² (1inch W G) Pressure opening: maximum 206 KN/m² (30 PSI) Vacuum opening: maximum –68.9 KN/m² (-10 PSI) Opening tolerance: ±5% Stability: ±10% Brownell Ltd. | Unit 2 | Abbey Road Industrial Park, | Commercial Way | Park Royal | London | NW10 7XF T: +44(0) 20 8965 9281 | F: +44(0) 20 8965 3239 | [email protected] | www.brownell.co.uk

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