Graco Dura Flo 10:1 6500cc Motor 1000cc Lower 2 Ball Piston Pump : Low Noise NXT Motor Carbon Steel Lower Material UHMW w Leather Packing 3 8" x 200' This part plays a crucial 4294* 5141 This part plays a crucial role in maintaining smooth Pump: Equipped with the Mi T M Pressure Relief Start which eliminates pressure build up in the system · External bypass system allows more water into the system to protect from heat build up · Forged brass manifold · Thermal relief valve · Water filter with clear sleeve for screen inspection Improved serviceability with fewer parts these durable pumps feature an NXT motor and can now achieve an even higher range of pressures without compromising flow