Is this a pressure relief valve?

[bw77]

The short piece to the right of the drain valve, under the pressure switch ****** - is that a pressure relief valve?
It doesn't look like any that are currently sold.

If not, is it a cleanout? Looks like pvc.

 

[nadogail]

No

 

[larry4406]

The short piece to the right of the drain valve, under the pressure switch ****** - is that a pressure relief valve?
It doesn't look like any that are currently sold.

If not, is it a cleanout? Looks like pvc.

Looks like someone has replaced yours with a male coupling and a hard cap.

Here is the one on our pressure control (just took this picture).

https://www.homedepot.com/p/Everbilt-1-2-in-Brass-Relief-Valve-for-Use-with-Well-Pressure-Tanks-EBRV50NL/205617993

 

[Sumboodie]

No... well aside from it'll probably blow before copper pipes do being it's plastic.
Just redid mine, was a mess. Temp job, but still.

 

[bw77]

No... well aside from it'll probably blow before copper pipes do being it's plastic.
Just redid mine, was a mess. Temp job, but still.

The pressure switch was not working right and the pressure approached 100psi before I shut it off.
The plastic plug did not blow out. I need to replace it with a 75psi prv.

 

[larry4406]

The pressure switch was not working right and the pressure approached 100psi before I shut it off.
The plastic plug did not blow out. I need to replace it with a 75psi prv.

The pressure switches are often mounted on a 1/4" NPT long ******. Those get plugged with crud.

Always clean/replace the ****** when you are having pressure switch issues. You appear to replaced the ****** and the switch already.

I have our pressure switch adjusted for 50 psi cut in and 70 psi cutoff. My PRV does not weep (not sure its setting now that I think about it).

 

[The Cobbler]

It looks like a cold start valve/ they are used in hard to start air compressors and let pressure bypass till something like 10 psi to relieve load on the compressor until everything gets spinning at full rpm. yours looks like a water system?

 

[PCustoms]

The pressure switch was not working right and the pressure approached 100psi before I shut it off.
The plastic plug did not blow out. I need to replace it with a 75psi prv.

I've never seen a pressure reducing valve on a well pump...

Adjust (or replace) your cutoff switch and verify tank bladder is all you need

 

[larry4406]

Zoom of OP's abortion.....

 

[22-W]

I've never seen a pressure reducing valve on a well pump...

Adjust (or replace) your cutoff switch and verify tank bladder is all you need

That is a Cycle Stop valve. Also known as a mechanical constant pressure valve. I have used many. It makes you able to use a much smaller tank than normal, and still get enough pump run time, plus constant pressure.

 

[PCustoms]

That is a Cycle Stop valve. Also known as a mechanical constant pressure valve. I have used many. It makes you able to use a much smaller tank than normal, and still get enough pump run time, plus constant pressure.

Really?

Looks a hell of a lot like the standard brass fitting that you get for any standard pressure tank...

Here's mine:

 

[larry4406]

Really?

Looks a hell of a lot like the standard brass fitting that you get for any standard pressure tank...

Here's mine:

+1

 

[22-W]

Really?

Looks a hell of a lot like the standard brass fitting that you get for any standard pressure tank...

Here's mine:

I thought you were talking about the red regulator on post #4.

 

[bw77]

I replaced the pvc plug with a 75psi pressure relief valve, and I replaced the drain valve which was dripping.

 

[PCustoms]

I thought you were talking about the red regulator on post #4.

Considering I quoted #5, it should have been obvious what I was talking about

 

[Sumboodie]

Considering I quoted #5, it should have been obvious what I was talking about

There any reason you need to be condescending and rude?

 

[PCustoms]

There any reason you need to be condescending and rude?

Several.

 

[Sumboodie]

I replaced the pvc plug with a 75psi pressure relief valve, and I replaced the drain valve which was dripping.

Make sure your switch is shutting the pump around 60psi.
100 psi relief valves are also common.

 

[Sumboodie]

That is a Cycle Stop valve. Also known as a mechanical constant pressure valve. I have used many. It makes you able to use a much smaller tank than normal, and still get enough pump run time, plus constant pressure.

Yes, works well. I bought it like 4 years ago, finally got around to installing it.

 

[22-W]

Yes, works well. I bought it like 4 years ago, finally got around to installing it.

Sometimes they take a little bit of adjusting to make them work correctly, but they are foolproof once they are going. And power issues don’t affect them like they do on VFD’s, etc.

 

[30-30remchester]

Plenty of correct replies. Spent 40 years installing them.

 

[Sumboodie]

Sometimes they take a little bit of adjusting to make them work correctly, but they are foolproof once they are going. And power issues don’t affect them like they do on VFD’s, etc.

It has made the shower much nicer. Before was constantly varying temperature, depending if the pressure was getting down near 40 or was near 60.
Also the pump would cycle probably 3-4 times while the washer was filling.

I'd recommend it to anyone with a well. Other option is sizing the tank correctly, but a 120 gallon tank is about $850, and takes alot of space. And still wouldn't have even pressure.
With the CSV, the pump stays running while water is being used.

My tank is a "20 gallon", but it's really only ~5 gallon capacity. Was barely enough to flush the toilet and wash my hands without the pump coming on.

 

[22-W]

It has made the shower much nicer. Before was constantly varying temperature, depending if the pressure was getting down near 40 or was near 60.
Also the pump would cycle probably 3-4 times while the washer was filling.

I'd recommend it to anyone with a well. Other option is sizing the tank correctly, but a 120 gallon tank is about $850, and takes alot of space. And still wouldn't have even pressure.
With the CSV, the pump stays running while water is being used.

My tank is a "20 gallon", but it's really only ~5 gallon capacity. Was barely enough to flush the toilet and wash my hands without the pump coming on.

Even a 4.5 gallon tank will work good with that valve. The pressure will be more constant with a smaller tank. But I use a 20 gallon tank like you most of the time if there is room for it. Easier to set up than a smaller tank tank without a base. The biggest downfall is the increased back pressure between the pump and CSV. No problem as long as the pipes and equipment are in good shape.

 

[Sumboodie]

Several.

No reason to be in here spreading that then...