"This Remco 12 Volt Self-Priming RV/Transfer Water Pump is ideal for small to medium RVs. Includes fuse. Dimensions L x W x H in. 9 x 4 5/8 x 4 7/8, Volts 12, Amps 6 1/2, Max. PSI 60, Flow GPH 204, Port Size in. 1/2, Self-Priming Yes. For small to medium RVs Motor speed adjusts to water needs 1/2in. FNPT port Positive shutoff at 75 to 85 PSI Pressure relief safety valve Capable of sustained low voltage operation"