New Non Return Valves in a variety of sizes: 6mm, 8mm, 10mm and 12mm (These are measured by the size of fuel hose these are for, so if you have 8mm inside diameter fuel hose you will need a 8mm one way valve). This prevents fuel from returning back to the tank and keeps it in the line, so if you have a vechile that is hard or slow to start because the fuel is running back through the lines this will solve all your problems, not suitable for Fuel injection. Suitable for Carburettor and low pressure fuel systems. This is designed to stop fuel syphoning back down the pipe and hold the fuel in the pipe. Suitable for petrol /diesel / Bio / Vegetable oil / Paraffin / Kerosene oil.
Sizes available: 6, 8, 10, 12mm (3/16, 1/4, 5/16, 3/8, 1/2)
Length: All approx 62mm
Width: All approx 32mm
The easiest and most effective way to measure the size of pipe for the correct non-return valve you need is to use a drill piece to check the inner diameter of the pipe, If the drill piece is a snug fit then the inner size of the pipe is the same size as the drill piece.
Using a vernier gage will also give you a accurate reading.
Please check the pictures below too see the pipe being measured by a drill piece and also a vernier gage.