The Fimco High Flo Check Valve for 3.8 and 4.5 GPM Pumps creates the pumping action for the pumps. Built to replace the check valve assembly for the 3.8 and 4.5 GPM High Flo Pumps.
• Works on Fimco Models # 5275498, 5275704, 5277982, 5275088, 5281372, 5151088