The 20-1220 series fuel filter is represented with an anodized silver outlet cap and contains a one-way check valve.
- Safe for all fuel types
- Stainless element can be cleaned and reused
- 10 micron filtration meets requirements for fuel injection
These fuel filters use the same elements and have the same physical dimensions as the 20-0220-0X fuel filters. The difference is they feature an integrated check valve on the outlet. This filter was flow tested to have a 1psi drop at 300LPH and 2.5psi drop at 700LPH.
Depending on the application, the check valve fuel filter can be used to prevent pressure at the fuel rail from dropping when the engine or fuel pump is turned off. As an example, some fuel pumps do not include a back-flow check valve on the outlet. Another example is some venturi jet pumps operate on the high pressure side rather then on the return side of the fuel system. These examples would result in loss of line pressure when the pump is turned off and could therefor benefit from a check valve fuel filter. Keeping pressure in the fuel rail helps speed the restart cycle of the engine.
