Circle Seal Offers New Safety Relief Valve For Pressures To 200 PSI

A new series of compact safety relief valves for pressures to 200 psi is now available from Circle Seal Controls, Anaheim, Calif. Designated the 500 Series Relief Valves, they provide a cracking pressure accuracy of +/-5 degrees, and an instant reseal at 90 percent of cracking (above 10 psi).

According to Circle Seal, the 500 Series Relief Valves provide zero leakage to 95-98 percent of cracking pressure. As pressure increases, the cross-shaped Q-ring forms a tighter and more efficient seal against the metal seat of the valve up to cracking pressure. Interchangeable springs provide a wide range of cracking pressures: from .5 to 150 psi. They are adjustable only from the inlet side for safety against tampering.

The 500 Series valves are easy to install and provide long, maintenance- free service. They may be preset at the factory to required cracking pressure, and are available in aluminum, stainless steel or brass with a wide choice of Q-ring materials for a broad temperature and media compatibility.

These valves are available in a choice of configurations: in-line, discharge- to-atmosphere and manual override. Deflector caps and ASME coded versions are also available.

For more information and free literature on the 500 Series Relief Valves from Circle Seal Controls, Circle 49 on Reader Service Card

Maritime Reporter Magazine, page 38,  Aug 1988

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.