Air Release Valve
Judberd is air release valve manufacturer in china with 30 years experience, judberd can offer air release valve for water line as below
Double Orifice Air Release valve with Isolation valve (Gate Valve or butterfly valve)
Judberd air release valve feature
We take one as example ,if you need to know more about all our air release valve design feature, welcome you contact us
1, as in Figure 1, we have a directional exhaust design for the air release valve, this position can be connected to pipe, the discharge of gas and water can be guide to a pool or specified place ,if you don’t need to connect pipe,it also can be connected to the mesh filter (Figure 7) to prevent harmful objects into the pipe, such as snakes, mosquitoes, etc.
2, as in Figure 2, you can remove the small ball (Figure 6), and install more sensitive brass fast air release valve, once there is gas to discharge, dynamic exhaust, very sensitive, do not have to wait for the accumulation of gas to a certain amount to open the exhaust port for exhaust
3, as in Figure 3, here we designed three layers seal, when the ball is topped by the gas, can be quickly sealed, only a very small amount of water discharge
4, as in Figure 4, no plastic guide barrel design, the floating ball will not be stuck due to impurities in the water, and thus fail. So this air release valve is also suitable for sewage with a small amount of impurities
5, as in Figure 8, here we can drill the threads according to clients requirements and plug them with stainless steel plugs, customers can remove the plugs here themselves according to their needs and install the water pressure gauge.
What is air release valve?
The air release valve is designed to automatically complete the exhaust intake according to the amount of gas in the pipe and the pressure level in the pipe, thus ensuring that the pipe is under normal pressure and preventing water hammer and rupture of the pipe.
Judberd air release valve have two balls one large and one small, one high and one low center of gravity, the pump began to work, the water pressure began to rise, with the rise of water pressure, the gas in the pipe will be discharged through the large vent, and so on gas discharge, the water pressure will firstly jack up the large ball, the large exhaust port to seal, and the pipeline trace gas through the small ball to discharge, and so on the pipeline only a small amount of gas is not enough to open the large ball The gas will be discharged through the exhaust port of the small ball when the gas reaches a sufficient amount, the exhaust port of the small ball opens and the gas is discharged, after the gas is discharged, the water pressure will jack up the small ball to close the exhaust port, if the pipe produces a large mass of gas which pressure is enough to make the big ball fall, then the big ball will fall for exhaust, and after the gas is discharged, the water pressure will jack up the big ball for sealing, When the pump stops working, Drainage is greater than water supply, the pipe generates negative pressure, the big ball falls off, and the big mass of gas enters quickly. Thus, the negative pressure in the pipe is prevented, and the negative pressure is very damaging to the pipe.Some low strength pipes, such as PE pipes, will be deflated due to negative pressure.
How to install air release valve?
Air release valve is usually installed at the highest point of the pipe or at a bend, normally it is a branch from the main pipeline as below photo.A tee, saddle clamp or tapping sleeve can be used to split a branch from the main pipeline.After the tee, saddle clamp or tapping sleeve, there should be installed a shut-off valve, the shut off valve can be a gate valve, butterfly valve or ball valve ,finally is the air release valve.Air release valve can be connected by thread ends or flange ends.
This picture is from google for show purpose only, not for commercial purpose
Air Release Valve Types and Their Function
Normally air release valve include single orifice air release valve, and double orifice air release valve, single orifice air release valve include thread ends type and flange ends type.Double orifice air release valve with flange ends.
Small orifice air release valve means valve size from DN15-50 with orifice 2mm dia,the admission and discharge of air chart is as below
Large orifice air release valve and double orifice air release valve means valves size is larger or equal to DN50,the admission and discharge of air chart is as below
How to choose the right size air release valve?
For Large and Double Orifice Air Release Valve,The dimensions of the air release valves correspond to the pipe dimensions as below
| Valve size | * recommended maximum pipeline diameter |
|---|---|
| DN50 | DN400 |
| DN80 | DN600 |
| DN100 | DN900 |
| DN150 | DN1000 |
| DN200 | DN1600 |
| DN250 | DN2000 |
What is Automatic Air Release Valve?
During the working process of the Air Release Valve, it is the pressure of the gas that controls the opening and closing of the air release valve, without manual operation. This is why air release valves are also called automatic air release valves.
What is the material for air valve for water line?
1,Ductile iron body,ABS float type air release valve
2,Ductile iron body,Stainless steel float type air release valve
Do air release valves leak water?
When the air release valve exhausts from the exhaust hole, it will leak water. The amount of leak water depends on the sealing performance of the air release valve. If the sealing performance is good, the leak water will be less, and if the sealing performance is not good, the leak water will be more. After the exhaust is completed and the ball is lifted and sealed by water pressure, the air release valve should not leak water. If it still leak water, then means the air release valve fails.
