Re: Pressure Tank Leaking

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frankr

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#76552

About that button leak: There are a few requirements.

1. The lower end of the push rod. They get corroded where the diaphragm support washer contacts the rod. The rod must be flat at that area (just above the threads).

2. The diaphragm support washers. They must be flat (except the outer rim, of course). And not rusted at the center hole area. That flat center area against the flat end of the push rod is where they meet and seal (with a dab of fuel-proof gasket sealant). And yes, they will deform a bit when you tighten the nut. That assures that they seal against the diaphragm material.

3. The push button knob: It is supposed to spin freely on the push rod. If it does not, you tend to rotate it and the push rod as you pump. That unscrews the nut off the bottom.

The pressure relief valve is another common source of pressure leaking. Unfortunately, the last time I checked, they are NLA, so do whatever you can.to align it with the old imprint.