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- เผยแพร่เมื่อ 9 ก.ย. 2024
- A quick look at a cutaway of a spring type check valve for plumbing.
This type can be used in all orientations. Some check valves rely on gravity and those are often limited to 1 or 2 orientations.
This one was loaned to me by a company that I have done work for in the past.
Other Valve Videos:
Ballcock Valve Basics: studio.th-cam.com/users/videoo6AEtgs_QuU/edit
Check Valve or One Way Valve - Spring Type: th-cam.com/video/MeDflQ1IHM0/w-d-xo.html
Ball Valve: th-cam.com/video/BkUGR1HJa3w/w-d-xo.html
Poor quality valve: th-cam.com/video/UA1ysUhnDRs/w-d-xo.html
Great video, these concise bits of information is how you get people to learn. Seems like you helped tens of thousands of people
Best explanation to date
Glad you liked it
Can you use such a valve with fuel oil?
You should only use parts certified for use with oil. This one is not.
very nice
Thank you.
Cool a diode for fluids ;>)
Exactly! Maybe you know already, early researchers in electricity used water in pipes as the model for how they thought of electrical flow.
Other way around... a diode is a check valve for electricity ;)
Many thanks!
got this piece, used it for pressure, rubber oring got out of place, how do i move it back in?
@@slumpmässig-j4v They unscrew, but it sounds defective. If it was me, I'd buy a new one.
Can you remove the spring completely (in a vertical setup) so water pressure closes it and gravity opens it again
There is already a flapper type that works on gravity and takes away very little water pressure. BTW, the spring is not strong, just enough to nudge it closed.
I think you should comment on how to replace the valve when it is worn, I assume the body unscrews apart. Also why is everything made of plastic now, wouldn't a metal valve be better.
Unfortunately the companies that make these don't sell spare parts, however a good quality part usually lasts for decades.
Thank u
You are welcome.
Is this spring valve good for hot water pipes ?
@@Boss-gk8kc You would have to check the manufacturer's specs for the one you're buying.
One thing I don't understand about check valves, I see them mostly made of plastic. Will that be strong enough for high pressure plumbing system of 1000kPa? Plastic? Really?
That's 145 psi. I don't know what they are rated for, but I don't think I'd use them.
@@tsbrownie But the brass valve in this video is also made of plastic internals. That's the type I'm talking about.
@@thelogician1934 I've never lived in a house with those pressures. I think 45 psi is the max I've seen. That's about a third of 1000 k pascals.
@@tsbrownie 1000kpa will happen will you heat up a hot water cylinder and due to thermal expansion but as soon as the tap is open, the pressure goes down to normal level like 300
Kpa.
i have install water pump to increase water pressure in my house..the water pump effect kinda delay as the pressure built up..will this retain pressure if i install this valve after the water pump?(so the pressure retain normal as it had increased as my water pump doesnt have one way valve)
I am not a plumber, but I have seen these installed before and after the pump. Not sure which is better. My water pump has a non-return valve on the inlet (Hitachi).
good
Could you give the name of the valve or company. I need to buy a couple. Thanks
It is called a 1 way valve. This one was made by Sanwa.
Can these be used with propane line?
No, they are rated for lower pressure water only.
Is this valve effective for pressurized water only? Or can be use only "gravity pressure " from a water tank?
It will work, but it is not good for low pressure systems. Some pressure is lost pushing it open. There is a flapper type which might work better for you.
Can this valve be cleaned on the inside I'm using it a washing machine drain ?
It can be cleaned, but if the rubber seal is broken or worn, the cleaning won't stop it from leaking backwards.
@@tsbrowniethanks it just has lint in it
great demon
any idea how long those last? before the spring is gone say
Depends on the brand and how much/hard it is opened and closed. A good one can last 10 to 20 years easily. The rubber seal is the typical failure point.
Can we use on water tank?
Yes, as long as you keep within specifications.
@@tsbrownie thanks you
The arrow go to the pump ?
Water flows in the direction of the arrow. Away from pump out. Towards pump in.
Can these Valve is used for gas of approx 15 bar or 200 psi ?
No, these are for water. I'd not use them for anything else, especially something flammable.
Is there any way can we adjust the spring tension? to make to make it variable pressure rating?
You could change the spring. Or add a brass / stainless screw to increase tension, but those are rather advanced things.
@@tsbrownie Yes, You are right.Thanks for your reply
Can I use this with dirty water? Like in a fish tank...
I think it would work if there was no big particles. It might have some reverse leakage. There's another style that might also work for you, it's a flapper type, but because it works with gravity it has to be oriented horizontally.
@@tsbrownie wow, your awnser was quickly, thank you very much. Im going to choose this flapper one. Thanks
What's the hole for in the centre of the valve body ?
Can you give me a time index? The only things I see are places for the water to pass.
From 20 seconds onwards where you're explaining how the valve works against the spring you can see the hole underneath
@@pgtips9236 This is a product that was cut and mounted to demonstrate. That hole in the back is where it is to be screwed to a display board.
oh i see,i was thinking it's some kind of drain port lol
I see a thread inside , can I open it to maker repair, is it have a normal or reverse thread, thanks
There is not much to repair inside and I do not think most companies sell the parts. But in theory you could probably take it apart and replace the internal parts. Oh, and you would have to regrind the brass valve seat.
How , counterclockwise or the other way, did you try to open it?
I do not know. You will have to try it. Make a video and show us!
can it be used for air too?
Not really. It will not handle high pressures like that. It is best to use an air-rated valve.
Can i use it for pressure relief
It would release at a low pressure. It would be better to use an adjustable relief valve.
@@tsbrownie do you have video for it sir?
@@redsun5145 No, that's something I have to put on my list.
Ótimo valeu.
Great thanks. You are welcome. de nada
Will it work for air?
It probably would work at low pressures, but there are specially made air valves that would be better and more reliable.
Pneumatic
i use to think their use ball & *net* instead
I think some do.
Can I use this for propane gas?
No, gas uses other types.
tsbrownie
do you know kind of valves use for gas
No sorry. I got this because a friend of mine is an exec at the company that makes water control components.