Overview Reviews Product Description PMR EWD-K4040G, W/BUILT-IN UNLOADER & THERMAL RELIEF Comet Pump Built-in Unloader 4.0 GPM 4000 PSI 3400 RPM 14.5 HP 1" Shaft Product Videos Custom Field Product Reviews Write a Review Write a Review × Comet Pumps PMR EWD-K4040G, 4GPM 4000PSI 1" GAS SHAFT W/BUILT-IN UNLOADER & THERMAL RELIEF Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *