Messages

1

Valve Tech / Re: CSV 125 50psi failing

« on: May 07, 2025, 03:31:00 PM »

If I understand you correctly, using an 1 1/4” hose with 1 1/4” valve on the outlet of the CSVS 125 50-1  should allow the pump to develop its full potential of 12 gpm? The CSV valve is at the top of the well, the pump approximately 20’ deep in the well with a 1 1/4” pvc line between the pump and the valve.

2

Valve Tech / Re: CSV 125 50psi failing

« on: May 06, 2025, 05:46:02 PM »

Looking to get more volume using CSVS 125. Pressure is fine no issues.
Test is to determine gallons produced by a 12 gpm pump in one minute with the CSVS in the piping system and when the CSVS is removed from the piping system. Container used to measure was a 5 gallon pail.
1 minute of unrestricted flow, tap wide open, with CSVS 125 in water line, 5 gallons.
1 minute of unrestricted flow, tap wide open, without CSVS 125 in water line 10 gallons.
Question is, does the plastic restrictor on the inlet side  of the valve restrict the flow to 5 gallons per minute.

3

Valve Tech / Re: CSV 125 50psi failing

« on: May 05, 2025, 07:36:26 PM »

I received the CSVS 125. Thank you. The new valve was placed in service with the same results.
 Using an existing hose bib at the well head and isolating the rest of the system, timed how long to fill a 5 gallon pail.
Manually start pump, back pressure 120 psi. open valve, outlet pressure 50 psi.
After 1 minute 5 gallon pail full.

Removed CSVS 125 from the line, repeated same test, same equipment.
After 1 minute two (2) 5 gallon pails full = 10 gallons

Replaced CSVS 125 valve conducted another identical test. Same results 1 minute one(1) 5 gallon pail full.
Nothing between CSVS 125 and pump except check valve at top of pump.
Pump 3/4 hp 12 gpm.

4

Valve Tech / Re: CSV 125 50psi failing

« on: July 14, 2023, 08:36:23 PM »

What pump pressure before the CSV is required for the CSVS 125 50 psi to develop its maximum rated volume of 50 gpm or is the valve fully open when pump pressure ( back pressure ) is above 50 psi. In my limited experience as volume through a pump increases pressure will decrease.

5

Valve Tech / Re: CSV 125 50psi failing

« on: July 13, 2023, 12:45:23 PM »

Sorry, just read previous replies, got my answer.

6

Valve Tech / Re: CSV 125 50psi failing

« on: July 13, 2023, 12:43:25 PM »

What is the maximum gpm. possible through the CSVS 125 50 psi.

7

Valve Tech / Re: CSV 125 50psi failing

« on: June 25, 2023, 12:44:36 PM »

Considering  CSVS 125 50 psi.,what is the difference between it and CSV 125 50 psi. I’m talking about the internal components. Can the SS model be taken apart without destroying the valve?

8

Valve Tech / Re: CSV 125 50psi failing

« on: June 24, 2023, 11:13:16 PM »

Further to your previous reply I did what you suggested trying to find things that would obstruct flow. Finding nothing I ran trial again with the CSV 125 50 psi.in the line. Same problem, not enough flow to satisfy two sprinklers and any open faucets in the house which quickly resulted in pressure drop that shut the pump down.
My next trial was one sprinkler and one faucet which lasted longer, but low water pressure which also eventually tripped the pressure switch.
Finally totally frustrated I removed the CSV reconnected the line started the pump and let the system fill up.
Turned on two sprinklers, full capacity, pressure about 53 psi slightly below HI cut off of 57 psi. Leaving the two sprinklers running I then turned on kitchen faucet, bathroom faucet and laundry tub faucet. No problems again pressure dropped to 38 psi.not low enough to make low pressure cut in. Pressure in the well about 70 psi, which probably means the pump still has some capacity left.
The 4” submersible pump is new, rated by the manufacturer at 12 gpm. At 30 feet which is the depth the pump is at in the well.
As you’ll see the pump is in a shallow well and not a conventional setup. Point of the exercise is to show capacity of the CSV125 50 psi and the pump in the well.
I videoed the entire episode about 6 minutes long, not sure how to send it.
Your thoughts

9

Valve Tech / Re: CSV 125 50psi failing

« on: June 17, 2023, 07:35:47 PM »

Simplest way to resolve this, raise the pump to remove the valve which is near the top of the well, replace it with a 6” PVC nipple and pump back in service.

10

Valve Tech / Re: CSV 125 50psi failing

« on: June 17, 2023, 01:05:01 PM »

Thank you for the prompt reply. I will post pictures of my system later. There are no mechanical restrictions in the water system anywhere other than manifold and valves, all of which have not been changed or modified. Only two check valves, the one built into the pump and another brass 1 1/4” check valve directly above the pump as a back up. 1 1/4” PVC  line from pump to CSV valve and 1 1/4” PVC line existing.
There is a factory installed fine mesh  screen surrounding the inlet of pump which is unobstructed.
Internal openings in the CSV must be quiet large if it’s rated capable of passing full flow of 12 GPM pump?
Can the CSV be removed and back flushed? Are all the internal components stainless?
Gauge working as pressure fluctuates between 120 and 50 PSI and down to 0 if pump is shut down,  depending on how water system is used.
Pressure gauge is on main line 6” below CSV, between pump and CSV.

11

Valve Tech / CSV 125 50psi failing

« on: June 15, 2023, 11:13:31 PM »

CSV 125 50 psi is failing closed. Valve about 4 yrs. old and no longer allowing full volume of pump to flow through valve. Pump is 3/4 hp rated at 12 gpm approximately 30 deep in the well. In the past could easily handle 2 lawn sprinklers and any water demands in the house. Lately with 2 sprinklers  going, the max pressure capable slightly above low pressure cut in 32 psi., and if any demand for water is made in the house the volume of water can’t keep up, pressure falls below low cut off and system shuts down. Back pressure between the pump and valve 120 psi. Volume no longer going through valve to meet demand.
No changes made to water system since valve installed. Any thoughts to solve issue?