Good evening. I have a Amtrol WX202. I noticed my pump coming on when no water was being used. I also noticed some air in the water lines in the past few days. I started watching the WX 202. It's a 30/50. It kicks on precisely at 30 psi and off at 50. With no water being used the pressure drops back to 30 in about 15 minutes. I can't find any leaking or dripping fixers in or around the house. I drained the tank an empty, the pressure was 20... I replenished the air to 28 psi and turned the pump back on, no change. Still losing pressure at the same rate. I even valved off the water going to the house to see if that would arrest the dropping pressure it had no affect. I also purged some air through valve on top and only air came out. My question is... Is the WX 202 bad or could there be something else causing this? Oh, I've live in the house for 8 years and it was here when I got here.

If pressure is dropping when no water is being used, then you have a leak somewhere. The tank is not your problem. Do you have a shutoff valve to the house? If so, turn off water to the house. If the problem stops, then the leak is "upstream" towards the house. If it continues, then the leak is in the well, either a checkvalve or leaking wellpipe.

That pressure tank has a drawdown of about seven gallons, which means you are losing about a half gallon per minute.

Is your pump above ground or in the well. Can you see a checkvalve above ground?

Yes I have a shut off to the house right after the tank. I shut that off and I still have the pressure drop.

Is your pump above ground or in the well. Can you see a checkvalve above ground?

I have a shut off to the house right after the tank. I shut that off and I still have the pressure drop.
Jlisenbe nailed it when he said leak or check valve. One of two things are happening here.
1. you have a faulty check/foot valve **OR**
2. You have a leak in the suction line.
My bet's on the check/foot valve.
Now if you have a open foot valve you wouldn't have to pull the well point. Simply add a check valve downstream from your pump. Good luck, Tom

The pump is in the ground (submersible I guess.) When I look down the pvc I see a pipe coming up from the abyss about 5 feet from the surface it makes a 90 degree turn through the pvc and into the ground. It's not just a 90 turn in the pipe…it looks like it could be a valve. I have no idea how you would work on that... I would have to pull it up , I quess.

So If I understand you guys I could just place a check valve in the line coming from the pump into the house.

Looks like your check valve has failed. I would treat this just like a failed foot valve and not pull the pump to replace the valve. Instead I would install as new check valve on the surface, That would contain your pressure. Good luck, Tom

You guys have been fantastic! I'm going to put in a check valve just inside the house. I'll have to deal with the one in the pump sometime I guess, but for now putting one inside the house will fix my problem. Thanks to you both of you!

Make sure you put it between the well and pressure tank, not between the tank and the house.

What you are doing will work. It's best to replace the CV on the pump, and not doing so can end up damaging your new CV, but being above ground, it will be easy enough to replace.