Cycle Stop Valves

Pump System Questions and Answers => Pumps, Wells, Tanks, Controls => Topic started by: sonoffar on November 19, 2018, 12:31:55 AM

Title: check valves
Post by: sonoffar on November 19, 2018, 12:31:55 AM

With all I know I could almost fill a thimble.
Do all well pumps have a built in check valve?
In this country, (Center Calif.), at least one check valve is always installed as the first item on the line as it comes up out of the well. Is that just a good way to feed a well drillers kids or is this something that is commonly done most everywhere? Your information seems to indicate that the drillers kids are doing well, thank you. Or am I missing something?

Title: Re: check valves
Post by: Cary Austin on November 19, 2018, 08:24:51 AM

Most 2HP and smaller submersibles come with a check valve built in or one attached to the pump.  That is the only check valve you want in the system.  Any other check valve will cause problems.  In many states having a check valve above ground is illegal.  In states like Texas they say you must have a check valve above ground, but you cannot have any pipe under a negative pressure.  Those two things do not work together.  Having a check valve above ground actually makes a negative pressure in the pipe, so it it illegal even though it is required.  If state regulations are so confusing, you can guess how confused most people are on this subject.

Well guys don't make a lot of money on check valves.  But with the old pressure tank only method, the pump cycles on and off so much it wears out check valves quickly.  So they add another check valve thinking it will spit the abuse and last longer.  In reality they just need to eliminate the cycling to make the check valve and everything else last longer.  But adding a CSV1A makes the pump, tank, switch, check valve, and everything else last so long, they don't like that either.  So they just add an extra check valve or two and let you cycle your pump, tank, switch, check valves to death, which is how they feed their kids.  And if you fall for the multiple check valves and no Cycle Stop Valves again, they also put their kids through college on your money.

Title: Re: check valves
Post by: sonoffar on November 19, 2018, 03:54:01 PM

Thank you for your clear answers and how quickly you got back to me. That doesn't happen like that too much in this part of the country.