Onlinefilter with check valve

This check valve allows fuel to flow in one direction but prevents it from flowing back. This helps maintain fuel pressure in the lines, especially when the engine is off. By preventing fuel from flowing back into the tank, the check valve prevents air bubbles and reduces the load on the fuel pump at start-up. Tolerates both petrol and diesel. Connection for 6 and 8 mm hose. Made of nylon filter.