What is an exhaust valve?

What is an air exhaust valve?

The function of air exhaust valve:

Bleed valves are typically used in water or irrigation systems to ensure that air is automatically released from the water system to maximize system performance. If air is not released, entrained air in the pipe can result in excessive head pressure and flow loss.

It is also designed to automatically release any entrained air that accumulates at high points during water delivery, thereby maximizing pipeline efficiency.

Air exhaust valve applications.

The vent valve is used for pipe venting in independent heating systems, central heating systems, heating boilers, central air conditioning, floor heating, and solar heating systems.

Principle of air exhaust valve.

When there is gas overflow in the system, the gas will climb up the pipe and eventually gather at the highest point of the system, and the exhaust valve is generally installed at the highest point of the system, when the gas enters the exhaust valve cavity gathered in the upper part of the exhaust valve, with the increase of gas in the valve, the pressure rises, when the gas pressure is greater than the system pressure, the gas will make the water level in the cavity fall, the float drops with the water level and opens the exhaust port; after the gas is exhausted, the water level rises and the float rises with it, closing the exhaust port. By the same token, when the system produces negative pressure, the water surface in the valve cavity drops, and the exhaust port opens, because the external atmospheric pressure is larger than the system pressure, so the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure. If you tighten the cap on the valve body of the exhaust valve, the exhaust valve stops exhausting, usually, the cap should be in the open state. The exhaust valve can also be used with the isolation valve to facilitate the maintenance of the exhaust valve.

Features

1、The float of the exhaust valve is made of low-density PPR and composite material, which will not deform even under the immersion of high-temperature water for a long time. It will not cause difficulties in float activities.

2、The lever of the float is made of hard plastic, and the connection between the lever and the float and the support is made of movable connection, so it will not rust and corrode during long-term operation, which will lead to the system not working and leakage.

3、The sealing end part of the lever is supported by a spring, which can be expanded and contracted accordingly with the movement of the lever to ensure the sealing in the case of non-exhaust.

Installation of the air exhaust valve.

When the exhaust valve is installed, it is best to install it together with the isolation valve, so that when the exhaust valve needs to be removed for maintenance, it can ensure that the system is airtight and the water does not flow out. Low-density PP material, this material will not change shape even under the immersion of high-temperature water for a long time.

The operation method of the vent valve.

When the tube begins to fill with water, the plug stays in the open position for a large amount of exhaust, when the air is exhausted, the valve water, the float is floated, drive the plug to the closed position, stop a large amount of exhaust, when the water in the tube is normally transported, such as a small amount of air gathered in the valve to a considerable extent, the water level in the valve drops, the float then drops, at this time the air is discharged from the small hole, when the pumping machine stops, the water in the tube is empty or when the tube When the pumping machine stops, the water in the pipe is empty or when the negative pressure is generated, the plug head opens quickly at this time to suck in air to ensure that the pipe is complete.

Wesdom's exhaust valve type (classification).

Single port exhaust valve, double port exhaust valve, composite exhaust valve

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