Does such a valve exist? (water check valve)

  • Thread starter Thread starter Timscmitt
  • Start date Start date
  • Tags Tags
    Valve Water
AI Thread Summary
A user is seeking a specialized valve that allows water flow in one direction under low pressure but closes when pressure ceases, while also permitting air to enter the system downstream. This valve should prevent water from escaping when active but allow for venting when inactive, facilitating quick drainage. Suggestions include considering an atmospheric vacuum breaker as a potential solution. The user is encouraged to provide a sketch for better clarity on the system design. The discussion highlights the need for a unique combination of check and air admittance valve functionality.
Timscmitt
Messages
1
Reaction score
0
Hi folks,

I am looking to solve a small issue.

It requires a 'valve' that will permit water travel in one direction whilst under low active pressure but which closes upon cessation of said pressure. Fair enough....but when closed I would like it to allow air into the system (downstream of the 'check valve') in such a way that when livened again water cannot escape through the 'venting arrangement.' So when live the valve is open but closed to the environment. When not live the valve closes and 'vents' the downstream aspect to the environment thus ensuring quick natural emptying of that pipe. The distance from the 'valve' to terminal pipe fitting is 100mm .

So its a kind of check valve/air admittance valve all in one and in 1/2".

Any help with this little quest would be most appreciated.

Have a great weekend!!
 
Engineering news on Phys.org
Could you upload a sketch to help clarify the system? Use the "Attach files" link below the Edit window to upload a PDF or JPEG version of your sketch. Thanks.
 

Thread 'Questions about the Tesla turbine'

Hi all, i have some questions about the tesla turbine: is a tesla turbine more efficient than a steam engine or a stirling engine ? about the discs of the tesla turbine warping because of the high speed rotations; does running the engine on a lower speed solve that or will the discs warp anyway after time ? what is the difference in efficiency between the tesla turbine running at high speed and running it at a lower speed ( as fast as possible but low enough to not warp de discs) and: i...
View full post »
Thread 'Where is my curb stop?'

Thread 'Where is my curb stop?'

My water meter is submerged under water for about 95% of the year. Today I took a photograph of the inside of my water meter box because today is one of the rare days that my water meter is not submerged in water. Here is the photograph that I took of my water meter with the cover on: Here is a photograph I took of my water meter with the cover off: I edited the photograph to draw a red circle around a knob on my water meter. Is that knob that I drew a red circle around my meter...
View full post »

Similar threads

Finding Check Valves for Water Droplets
Replies
16
Views
3K
Physics of Water Pressure Regulators/Reducing Valves
Replies
4
Views
26K
How does compression cool water in a household water cooler?
Replies
2
Views
3K
Pressure Venting in 100% Water System
Replies
2
Views
3K
Using an IR Thermal Gun to check for steam passing valves
Replies
2
Views
2K
I Is this water pumping device using the Rankine cycle?
Replies
4
Views
1K
Centrifugal Pump: Water Pressure at 50m & 4 Bar Gauge
Replies
4
Views
2K
Syphon problem with above ground water tank
Replies
9
Views
17K
The phenomena of Siphons - Directional check valve prevents siponing
Replies
2
Views
2K
What is the best way to use solar heating to cool a living space?
2
Replies
77
Views
23K

Hot Threads

Recent Insights

Back
Top