Suntec Bypass Screw

Suntec Bypass Screw

This OEM Suntec bypass screw is designed to install or adjust two-pipe systems on Suntec oil pumps. It regulates the pump bypass pressure, allowing excess fuel to return to the tank when demand is low or the burner is off.

Key Features:

• Part Type: Bypass screw (plug) for Suntec oil pumps

• Function: Manages return bypass oil flow in two-pipe configurations

• Pressure Adjustment: Helps maintain correct operating pressure and system stability

• Installation: Inserted into pump’s return port; removed for single-pipe operation

• Compatibility: Used across many Suntec gear-driven pumps, including AN, AL, A2L, ALE, AR, AP, AT, and J-series

Operational Notes:

• Screws in fully until snug into return port for two-pipe setups

• Must be removed for one-pipe systems to avoid pump seal damage and vacuum build-up

• Available in different thread sizes—ensure correct version for your pump model

Benefits:

• Enables safe return-line operation for two-pipe installations

• Maintains pump pressure without spillage or seal failure

• OEM component ensures proper fit and performance