I need a source for a windshield wiper vacuum line check valve. I made up a 16 oz. tank to help my wipers keep going while I accelerate. It will give me about 2 complete wiper cycles when I pinch off the vacuum line to the vacuum tank from the intake manifold. I need a check valve to keep the vacuum from being lost to the intake manifold when I accelerate.
It needs to have a weak sping and an inlet and outlet of about 1/4 inch to match my vacuum lines. Anyone know of such an animal, please let me know. Thanks - Scott