Morrison air control valve

[rr775]

I have an early 1970's era Morrison well system with an underground pressure tank. Every few years the air volume control valve stops working which water logs the tank and causes the pump to cycle constantly. I've replaced them myself many times but the only place I can find them is from the local pump service company. Its a plastic tube shaped valve, about 1 1/4" in diameter, 11" long and has a male pipe thread on one end. Inside the tube there is a valve/float mechanism that slides back and forth. The place I'm buying them from gets about $45 each for them. There's no packaging and no numbers anywhere on them. I'd like to find a different, cheaper source for them and maybe keep a spare or two on hand but I've spent hours searching online with no luck whatsoever. Does anyone know the valve I'm talking about? Maybe a part number or a source for them?

 

[Valveman]

Not familiar with that brand. But you might check with Whitewater, they make something similar.

 

[Sponsor]

 

[rr775]

I looked there but no luck. Here's a few pictures of it if that helps to identify it.

The pressure tank is located underground next to the well head. There's a pipe about five or six feet long that goes straight down into the tank and this valve screws into the end of it. The top end has a cap with a small vent hole and a T fitting with the pressure switch that controls the well.

 

[CAD]

Just replaced mine on a whitewater pitless adapter tank. It looks exactly like the one pictured.

The part number is GUV1100. I got mine from a parts supply house called First Supply here. They were $26 a piece.

Not sure why yours are going bad so often. Are you rebalancing the tank once you install them? The procedure is you turn on the pump, and once air stops bleeding out of the small weep hole, you turn off the pump. Then you fill the tank with air to the maximum pump setting (ie 60 psi if you have a 40/60 pressure switch)

 

[Reach4]

I wonder if you could refurbish bad ones by soaking in an Iron Out solution, and agitating. https://www.menards.com/main/housew...mover-9-5-lb/io10n/p-1444444183163-c-7097.htm

Full 5% strength vinegar or diluting muriatic acid at least 10 water to 1 acid might be better if the problem is hardness deposits, but I am thinking Iron Out would help that too.