Replacing the poppet within a PRO20/PRO35 pump is straight forward. Here's how you can do it.
If you need to clean or replace the bypass poppet inside a GPRO PRO20/PRO35 Fuel Transfer Pump, watch the instructional video above or read the instructions below. Remember to wear properly fitting PPE when doing this task!
- Turn off the pump and disconnect from power
- Use a pipe wrench to unscrew the bypass plug, spring and bypass poppet from the pump
- Inspect the o-ring on the poppet (part numbers: 133505-01, 133505-04) for damage or wear
- If poppet components contain debris, wipe them clean with a clean cloth
- Before reassembling, remove the bypass plug o-ring and lightly coat with grease, then reinstall it back on the bypass plug
- Reinsert the bypass poppet, spring, and plug into the pump. Tighten in place
Offerings covered by this post:
GPI PRO20 115V Fuel Transfer Pump, 1″ Manual Nozzle, 18′ Hose & Tank Adapter Mount (20 GPM) – PRO20-115MD
GPI PRO20 115V Fuel Transfer Pump w/QM Meter (20 GPM) – PRO20-115PO/QM40G8N
GPI PRO20 115V Fuel Transfer Pump w/QM Meter, 18′ Hose & 1″ Auto Nozzle (20 GPM) – PRO20-115AD/QM40G8N
GPI PRO20 115V Fuel Transfer Pump, 1″ Auto Nozzle, 18′ Hose & Tank Adapter Mount (20 GPM) – PRO20-115AD
GPI 115V/230V PRO35-115AD Fuel Transfer Pump, 1″ Auto Nozzle & 18′ Hose (35 GPM) – PRO35-115AD
GPI 115V/230V PRO35-115 & QM40 Combo, No Nozzle (35 GPM) – PRO35-115PO/QM40G8N
GPI 115V/230V PRO35-115 & QM40 Combo w/1″ Automatic Nozzle (35 GPM) – PRO35-115AD/QM40G8N