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Old 05-14-2016, 09:57 PM   #1
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Second Check Valve Here?


System is as follows: Well pump, holding tank, pressure pump, house.

At the pressure pump, I have it set up where the feed is coming from a lower bulkhead on the tank instead of an upper, so water flows down into the pump instead of the pump lifting the water (what these shallow well pumps are designed to do).

Normally you'd use a foot valve, but that wouldn't work with this setup.

So do I just stick a standard half pound spring check valve between the tank and the pressure pump? Right now the pressure pump won't maintain pressure, because it back feeds into the tank every time it clicks off.
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Old 05-14-2016, 10:31 PM   #2
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Re: Second Check Valve Here?


An inline check valve between the tank and pump is what you need. The type you use is your choice. I like this type with the flapper.

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Old 05-15-2016, 12:02 AM   #3
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Re: Second Check Valve Here?


That's what I've got on the top of the pump, but I thought they worked better sitting upright, whereas the plastic spring loaded would be able to sit upside down/sideways or whatever direction it pleased. Will the brass flapper style work in any direction?
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Old 05-15-2016, 06:28 AM   #4
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Re: Second Check Valve Here?


It will not work in any direction. Just my preference. I like the cap for priming if needed.
The inline spring loaded ones are fine as well.
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Old 05-15-2016, 11:15 AM   #5
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Re: Second Check Valve Here?


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Originally Posted by joed View Post
It will not work in any direction. Just my preference. I like the cap for priming if needed.
The inline spring loaded ones are fine as well.
That's what I thought. Yeah, I like them better as well. That's what I put on the top of the pump.

This one will be sitting sideways, so I need the spring.
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Old 05-15-2016, 11:30 AM   #6
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Here's the pump.
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Second Check Valve Here?-20160514_104302-2_1463329810726.jpg  
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Old 05-15-2016, 12:25 PM   #7
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Re: Second Check Valve Here?


While your at it I think I would put a shut off at the bottom of the tank. Then you can work on the pump without draining the tank. That check valve can sit sideways. It does not need to be vertical. The flapper does not sit vertical. There is a bit of an angle so that is seals when sitting flat.

I think what I would do is an elbow, a shutoff and then the check valve. Keeps the connection from sticking out too far from the tank and being susceptible to being knocked off. The elbow can point sideways or straight up.
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Old 05-15-2016, 01:23 PM   #8
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Re: Second Check Valve Here?


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While your at it I think I would put a shut off at the bottom of the tank. Then you can work on the pump without draining the tank. That check valve can sit sideways. It does not need to be vertical. The flapper does not sit vertical. There is a bit of an angle so that is seals when sitting flat.

I think what I would do is an elbow, a shutoff and then the check valve. Keeps the connection from sticking out too far from the tank and being susceptible to being knocked off. The elbow can point sideways or straight up.
Ok, a 90 similar to the top bulkhead. I've got another brass check sitting around here somewhere, I'll stick it on today. Tomorrow I'll go grab a shut off valve, because you make a good point there.
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