Model 3100 – Cashco Pressure/vacuum relief valve
Weight loded style
The Model 3100 is end of line, weight loaded pressure vacuum relief valve, designed to protect the atmospheric and low pressure storage tank from overpressure and vacuum conditions during normal venting operation in case of thermal changes and product movement in and out of the tank.
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The pressure vacuum relief valve (PVRV) is a type of valve used to control or limit the pressure or vacuum in a system or vessel which can build up for a process upset, instrument or equipment failure, or fire. Pressure vacuum relief valve are also known as breather valve and are low pressure device. PVRV works during normal venting operation. Normal venting refers to relieve excess pressure caused by liquid filling a tank ( pump in ) and to relieve vacuum that results from liquid being removed from a tank (Pump out).