Adjustable Relief Valve, 1/2” NPT High Pressure 175PSI - 310PSI Bronze. Condition is "New".

• The LV-1 Adjustable Pressure Relief Valve, is factory set to relieve at a pressure of approximately 185 psi.
• The Pressure Relief Valve may be adjusted to relieve at a higher pressure in accordance with the requirements of NFPA Standards for the authority having jurisdiction. The typical relief pressure point is nominal 10 psi above the expected normal system pressure.
• To reset the Model LV-1 pressure relief valve, rotate the hex cap clockwise for a higher pressure setting or counterclockwise for a lower pressure setting. Use the lines on the stem for an approximate relief pressure setting. One full turn of the hex cap will result in approximately 25 Psi increase or decrease.
• To verify the new setting of the Model LV-1 Relief Valve, us a small hydro-static pump attached to the supply. Increase the pressure at he relief valve to 10 psi above the expected normal system pressure. Readjust the LV-1 as needed to maintain approximately 10 psi higher relief setting.