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We have tested fuel pumps with and without check valves. With any check valve, flow and current draw will be affected. The two check valves tested were the standard integrated pump outlet check valve and the Radium Engineering check valve.
Standard integrated check valve Flow Restriction: 46-76 LPHCurrent Draw: 3.2-4.8 Amps
Radium Engineering check valveFlow Restriction: 15 LPHCurrent Draw: 0.5 Amps
The Radium Engineering check valve is very specific to the pump. It will only work on pumps listed below. NOTE: Before ordering, make sure the pump outlet hose barb ridges are in excellent condition. Damaged or non-round hose barb ridges may prevent the O-ring from obtaining a positive seal.
Compatible. These pumps did NOT come standard with a check valve, thus are perfect candidates for the Radium Engineering check valve.-TI Automotive E5LM (BKS1000 Brushless Controller Kit)-TI Automotive E5LM (BKS1001 Brushless Controller Kit)-Walbro/TI Automotive F90000295-Bosch Motorsports BR540-Deatschwerks DW400 (pre May 2019)