The UL/FM-labeled and listed 106-RPS-8700 pressure-relief valve from Singer Valve automatically relieves excess pressure in the fire protection system to discharge. It will automatically modulate to relieve excess pump capacity during pump startup and shutdown, allowing the pump to operate without causing surges. It is based on 106-PG or A106-PG main valves and comes in a complete range of sizes from 2 1/2 to 8 inches. In typical pressure-relief applications, the angle-style valve is often the preferred selection. Prior to shipment, testing includes UL- and FM-approved hydrostatic pressure tests and a full function and operation test. 604/594-5404; www.singervalve.com.