Feature:Thermal Relief Valve for Durability: TRV protects the pump from overheating while in bypass mode'. Releases small amounts of hot water and intakes cooler water to prevent overheating and extend the life of the pump.Easy Start: Built-in for simple & quick cold starts to make the startup a breeze.120 hours Running Time: 50 hours longer service life than other pumps!Maintenance Free: Pre filled Oil and double seal system, set it up directly and prevents oil/water leaks. The crankcase is manufactured from fully anodized die-cast aluminum for protection against corrosion, and you never have to change the oil. Precision polished stainless steel pistons deliver extended seal life. Pressure Adjustable-Rotate the unloader valve to adjust the pre.
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