Thread: Calibration of secondary relief valve
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Unread 15-02-2014, 13:18
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Re: Calibration of secondary relief valve
Our valves list a nominal operating pressure of 20-115 psi. Nominal as I define it mean working. They work fine at 125 PSI. Proof pressure is like 225 PSI. Since I can't find anything else written I am thinking I need the secondary relief valve