I have a sanke keg and a hand pump type of tap. The air pump unscrews from the tap coupler. Is there any reason I should not connect my CO2 line to the pump input so I can dispense with CO2 and not ruin the beer? There seems to be a little button on the side of the coupler that will relieve pressure.
here is a link to the tap I am talking about
124700 - All American Picnic Pump