Larry Caldwell
Elite Member
Nope. Just a 1-1/4" white PVC plug in the top.
Replace it with an air fitting so you can charge the tank with a compressor. The most efficient use of the tank is to pressurize it to 2 psi below the pump cut-in pressure. That gives you the most tidal volume per pump cycle.
With no tank bladder, it's hard to overdo. Any excess air will just bubble out through the plumbing.