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AA-9 Pressure Relief Valve

The Waterman Model AA-9 may be used for pressure relief on any pipeline with operating pressures up to 120 PSI where a large volume discharge is needed. The AA-9 meets the requirements of the Natural Resource Conservation Service specifications and has a larger orifice that is a feature not found on most other makes.  Each valve is factory set and hydrostatically tested to assure accuracy. (May also be specially ordered for customer final adjustment and sealing.) Automatic operation is provided by alloy steel carbon spring, engineered and specially manufactured for these valves to provide sensitive operation and maximum volume discharge.
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