[AL]

Granvil,

I know the Liberty setup now real well, but don’t have a clue as to the Vantare. Any chance the replacement check valve is undersized? The water tank is already vented and don’t see how a check valve change could affect venting. I know this sounds like a dumb assed comment, but any chance the check valve is reversed? Real easy to do, but if you just swore at me, I understand!:)

[Paul]

After I read the post twice that is what came to mind, check valve reversed. I’ve done it and agree easy to do.

I didn’t have the balls to print that…so I let you do it Tom.

[gary]

Gran,

Don’t let those two guys claim you don’t know the business end of a check valve.

My initial reaction is the new check valve may have a strong spring force to overcome, or may limit flow due to reduced open area. Either or both could contribute to longer fill times. My coaches have used ball valves on the fill lines. They will do what the check valve does when you close the valve, but when open they have a larger flow path so there is no restriction.

The run time of the pump is unrelated to the fill issue. The pump should be drawing from the bottom of the tank and depending on the type of pump, where the pressure switch is located, if you have an accumulator are the factors to consider relating to the pump.

You did install the check valve in the correct direction, right?

[Karl]

The tank is filling now, it just took an unusual amount of time , the check valve in question was installed the correct way ( I know you are surprised ) so I believe the problem was either 1.) that flow from the city water somehow got reduced during the time that I was attempting to fill 2.) extremely high rates of evaporation here due to the low humidity and the water flow couldn’t keep up or 3.) Kim ran a load of wash right after I put the tank on auto fill and left for awhile so when I returned the water level was virtually in the same place. This came out after I used some of my crack investigative skills Should we put this I the form of a poll? I almost wish I installed the check valve backwards.

[Peter]

Jon, might of hit on the cause with the spring pressure to open the check valve.

When I was working on the Aux air system on the Marathon service side the check valve was replaced with an high heat type. When speaking to the valve manufacture on a custom valve one of the questions was how much spring pressure should it have to open the valve ?

In the check valve business they refer to this as… cracking pressure. Based solely on how much air would open the valve. They suggested 3 psi.

So if the incoming water pressure is low and your cracking pressure is high, this would explain the problem.