American Lube TIM-166-LLC Low Level Cutoff and Inlet Check Valve

Installs at the bottom of the pump suction tube to help the pump maintain prime during periods of non-use. Also helps protect the pump ft.s packings by slowing down the cycle rate if the pump runs dry (no oil in tank). 1-1/2" (F) inlet. Low-level cutoff is 4-5/8" (L) which must be taken into consideration when ordering the suction tube. Used on Thunder 5:1 and Series 425 oil pumps.