Need float valve to turn off instantly not gradually

[Stapleerp]

As was said a non-modulating float valve will work, Look at Jobe.

As was also said, a float switch with a electric solenoid "sprinkler" valve will work.

View attachment 102153

I still have not had luck on these non-modulating float valves. It sounds perfect in concept but they are all giant commercial units when I search. I did send an email to Jobe, but none of their units talked about a quick turn off. In fact some said slower turn off was a feature.

This setup looks good if I can replace the float sensor with some thing that comes down from the top of the tank. Where do you get the transformers? Can you just use any transformer and splice the wire?

 

[Stapleerp]

Valve u show is motorised and will not shut off right now. A solenoid valve will.
Shown is 1/2" they come in 3/4" also. Float has both n.o. and n.c. contacts

https://www.amazon.com/dp/B07K4BYFSW/ref=sspa_mw_detail_1?ie=UTF8&psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwp13NParams

https://www.amazon.com/dp/B00APDCWBW/ref=sspa_mw_detail_2?ie=UTF8&psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwp13NParams

The ball valve I linked says normally closed. So I assume that means it is closed if no power. If power goes out it will close itself.

This solenoid could be open sometimes 5-6 hours at a time? I heard thats not good for them? Is that accurate?

 

[Sponsor]

 

[Valveman]

I still have not had luck on these non-modulating float valves. It sounds perfect in concept but they are all giant commercial units when I search. I did send an email to Jobe, but none of their units talked about a quick turn off. In fact some said slower turn off was a feature.

This setup looks good if I can replace the float sensor with some thing that comes down from the top of the tank. Where do you get the transformers? Can you just use any transformer and splice the wire?

https://www.jobevalves.com/assets/products/specsheets/2021/1edbd1bf84/Topaz-Differential-2021.pdf

 

[Reach4]

You could tape the tether to a plastic pipe, with the length selected to not fall in, that you insert into the tank. The longer the tether on the float side of the tape, the more hysteresis/deadband. So I am thinking you would use a fairly short tether, but not so short that the tether stiffness is a problem.

Control Switches - SJE Rhombus Control Products

INDUSTRY-LEADING CONTROL SWITCHES Our narrow-angle control switches accurately monitor high (normally open) or low (normally closed) liquid level conditions in water and sewage applications. Each control switch is available in various cord lengths with various mounting options to meet your...

www.sjerhombus.com

https://www.sjerhombus.com/support/different-types-of-float-switches-and-what-they-do/

SJE MilliAmpMaster™ WPS - SJE Rhombus Control Products Potable Water Control Switch

The SJE MilliAmpMaster™ WPS mechanically-activated narrow angle control switch offers reliable low current control for AC and DC potable water applications.

www.sjerhombus.com

A low current switch would need a relay/contactor to actually drive the pump.

 

[Reach4]

You could tape the tether to a plastic pipe, with the length selected to not fall in, that you insert into the tank. The longer the tether on the float side of the tape, the more hysteresis/deadband. So I am thinking you would use a fairly short tether, but not so short that the tether stiffness is a problem.

Control Switches - SJE Rhombus Control Products

INDUSTRY-LEADING CONTROL SWITCHES Our narrow-angle control switches accurately monitor high (normally open) or low (normally closed) liquid level conditions in water and sewage applications. Each control switch is available in various cord lengths with various mounting options to meet your...

www.sjerhombus.com

https://www.sjerhombus.com/support/different-types-of-float-switches-and-what-they-do/

SJE MilliAmpMaster™ WPS - SJE Rhombus Control Products Potable Water Control Switch

The SJE MilliAmpMaster™ WPS mechanically-activated narrow angle control switch offers reliable low current control for AC and DC potable water applications.

www.sjerhombus.com

A low current switch would need a relay/contactor to actually drive the pump.

https://www.pumpproducts.com/sje-rh...5-amps-max-pipe-clamp-mounted-20-ft-cord.html looks good to me. It can directly control a pretty good size pump at 230 volts.

 

[Stapleerp]

https://www.jobevalves.com/assets/products/specsheets/2021/1edbd1bf84/Topaz-Differential-2021.pdf

Thank you for suggesting Jobe!

I talked with them and their idea of "slow close" is 3 seconds. My idea was the 30 minutes that my current ball and stick takes. So yes the Jobe Side Mount Topaz valve seems like the best solution.
This is going to be much easier than trying to rig up some sort of water level on off solenoid. I do apricate all that info as a plan B though.

 

[Valveman]

Actually the 24V solenoid with a float switch is pretty easy. But either way will work.

 

[Stapleerp]

Actually the 24V solenoid with a float switch is pretty easy. But either way will work.

Well on to plan B again. Jobe said I need 5psi for the Topaz to work so there goes that idea.

With the Solenoid is there an issue with it being open for hours on end while filling? I read that burns them out.
Also what do you use for a power supply? Just like a 24volt wall wart?
Any sensors rather than float switches you might recommend?

 

[Valveman]

Well on to plan B again. Jobe said I need 5psi for the Topaz to work so there goes that idea.

With the Solenoid is there an issue with it being open for hours on end while filling? I read that burns them out.
Also what do you use for a power supply? Just like a 24volt wall wart?
Any sensors rather than float switches you might recommend?

If you don't have 5 PSI differential a solenoid won't work either. But if you don't have any differential pressure you don't need a valve as the water isn't flowing anyway. You can make a motorized ball valve close, but what would it be closing against? Where does the water come from that doesn't have a little pressure?

 

[Fitter30]

The ball valve I linked says normally closed. So I assume that means it is closed if no power. If power goes out it will close itself.

This solenoid could be open sometimes 5-6 hours at a time? I heard thats not good for them? Is that accurate?

Solenoid valves stay open as long as you like but just like any valve they like clean water just like most valves. There used in millions applications involving water. You wanted a fast shut off. Clothes washers,. ice makers and dishwashers use solenoids. If your looking for precise specs then you will have.to use industrial valve and level control don't be surprised at the cost.