1in. NPT inlet. High flow up to 22 GPM. All-metal hand guard and lever for rugged use and long life. Yellow deluxe hand warmer. Three speed automatic latch. Built-in check valve, and automatic shut-off. Leaded, diesel or kerosene. For 110V pumps only. Warning: Do not use with hold open device on self-service prepay installations. UL listed. U.S.A.