Valve, fluid flow question

[JJ21]

Hi all,

Right, this may be a bit hard to explain but I'll do my best. Hopefully attached is a sketch of the situation. The water flows from the tank into the "rigid container" through valve (1). This tank is then heated until the water reaches boiling at which point the thermostatic valve opens draining the water.
The question is I'm looking for valve (1). It must let the water flow into the container when the container is empty or when the water has drained from the container (due to the hydrostatic pressure exerted on it by the reservoir placed higher than the container) but once the tank is full it must close and definitively separate the water in the tank to the water in the container being treated.
This may be a simple valve but I'm not really a connoisseur so I was wondering if anyone out there knew what type I'm looking for??

Thanks in advance

 

[stewartcs]

Hi all,

Right, this may be a bit hard to explain but I'll do my best. Hopefully attached is a sketch of the situation. The water flows from the tank into the "rigid container" through valve (1). This tank is then heated until the water reaches boiling at which point the thermostatic valve opens draining the water.
The question is I'm looking for valve (1). It must let the water flow into the container when the container is empty or when the water has drained from the container (due to the hydrostatic pressure exerted on it by the reservoir placed higher than the container) but once the tank is full it must close and definitively separate the water in the tank to the water in the container being treated.
This may be a simple valve but I'm not really a connoisseur so I was wondering if anyone out there knew what type I'm looking for??

Thanks in advance

You need some type of float valve. One that shuts when the water level rises enough to close it.

CS

 

[PaulS1950]

a simple float type check valve would work well as long as the head pressure was low.
It is basically a cage with a tapered seat at the top. The ball is boyant in water so as the container fills the ball seals in the seat.
You could add a calibrated spring under the ball to compensate for higher head pressures.

 

[JJ21]

Brilliant, thanks for you help.
Just to maybe complicate this a little bit further, instead of a single cubic container it was a long coil pipe. Is there any way to calibrate the valve in order to let the water flow from the pipe through the outlet thermostatic valve while introducing a delay before the inlet water enters? Therefore separating the two streams while inside the pipe.

Thanks again

 

[alphy]

Hello,

Based on the information provided, it sounds like you are looking for a two-way valve with a thermostatic control. A two-way valve allows for flow in one direction and can be closed to stop flow in the other direction. The thermostatic control would allow the valve to open when the water reaches boiling temperature and close when the water cools down, separating the water in the tank from the water in the container.

There are different types of two-way valves such as ball valves, gate valves, and butterfly valves. It would be best to consult with a valve specialist to determine the most suitable type for your specific situation. They can also provide guidance on the proper size and material of the valve to ensure efficient and safe operation.

I hope this helps and good luck with your project!