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PRESSURE RELIEF VALVE <br />SPRING LOADED <br />fl, <br />The primary purpose of the pressure relief valve in the air piping system is to act as a <br />safety valve to protect the blower from over pressurization. The valve is pre-set to a <br />system pressure. When that pre-set pressure is reached, the valve will open, and vent <br />off any excess pressure. <br />This relief valve is available in four (4) sizes from 1" to 4" diameter pipe size and is pre- <br />set at the factory for a system pressure of 5 PSI. The pressure can easily be adjusted <br />with a screwdriver and wrench to vary the pressure range from 0-10 PSI. <br />PIPE BODY <br />A� <br />SPRING7 CAP <br />OCK NUT <br />ADJUSTING BOLT — <br />`` <br />MODEL AND ECIFICATIONS <br />MODEL PRV-1 <br />PRV-1.5 PRV-2 PRV-2.5 PRV-3 PRV-4 <br />"B" NPT SIZE 1" <br />1-.5" 2" 2.5" 3" 4" <br />"A" LENGTH 4" <br />5.25 5.25" 5.25' 5.25" 5.25" <br />PE5 <br />Pollution <br />Control <br />Systems, Inc <br />5827 Happy Hollow Rd. Suite I -B <br />Milford, OH 45150-1830 <br />Tel: (513) 831-1165 Fax: (513) 965-4812 <br />E-mail: Polconsys@aol.com <br />www.Pol l utionControlSystem.com <br />2u <br />