Quick Discharge Valve Performance and Benefits


The quick discharge valve is an important component in pneumatic control, a one-way directional control component. It is usually configured between the cylinder and the steering valve to prevent the gas in the cylinder from being exhausted directly through the steering valve.

The quick exhaust valve may also be called a quick exhaust valve and is typically used in pneumatic brake systems. Its function is to provide compressed air to both subsystems. In pneumatic brake construction machinery, most of the stop brake inlets used for springs provide and exhaust gas to the brake.

The structure of the quick exhaust valve constitutes the structure of the quick exhaust valve.

The quick exhaust valve consists of an upper and lower valve body, a spool diaphragm and a connecting screw. It has three connections. Of these three connections, only two are connected at any one time.

Advantages of the quick vent valve.

1. The float of the quick-discharge valve is made of low-density PP material. It will not deform even when immersed in high temperature water for a long time and will not cause difficulties in float movement. 2.

2. The float lever is made of hard plastic, and the connection between the lever and the float and the support are all movable, so it will not rust during long-term operation, which will cause the system to fail to work and leak.

3. The sealing end part of the lever is made of spring support, which can be expanded and contracted accordingly to the movement of the lever to ensure the sealing without venting.

Quick drain valve performance requirements

1. When the quick drain valve generates negative pressure in the pipeline, the piston should be opened quickly and a large amount of external air should be absorbed quickly to ensure that the pipeline will not be damaged by the negative pressure. And under the working pressure, the trace air collected in the pipeline can be discharged.

2. The quick discharge valve should have a relatively high air closing pressure. In a relatively short period of time before the piston closes, there should be enough capacity to complete the air discharge in the pipeline and improve the efficiency of water delivery.

3. the water shut-off pressure of the vent valve should be less than 0.02 MPa, the vent valve can be closed at a lower water pressure to avoid a large influx of water.

4. Fast discharge valve should have a large exhaust volume. When the pipeline empty pipe filling, can be achieved in a very short period of time to quickly exhaust back to normal water supply capacity.

5. fast drain valve should use stainless steel float (float bucket) as the opening and closing parts.

6. fast exhaust valve body should be equipped with anti-impact protection cylinder to prevent a large amount of exhaust after the high-speed water flow directly affect the float (float bucket), and cause premature damage to the float (float bucket).

7. DN ≥ 100 exhaust valve using a split structure, consisting of a large number of exhaust valves and automatic exhaust valve to meet the use of pipeline pressure requirements. The automatic exhaust valve should use a counter-lever mechanism to greatly amplify the buoyancy of the float and close the low water level. Impurities in the water do not easily touch the sealing surface, and the exhaust port will not be blocked, and its resistance can be greatly improved. At the same time, under high pressure conditions, due to the force-adding effect of the compound lever, the float can fall simultaneously with the water level, so the closing member will not be sucked by high pressure as high pressure, so that the normal exhaust.

8. For high flow rate, frequent start-up pumps and caliber DN≧100 working conditions, in order to slow down the impact of water flow, should be installed in the fast discharge valve buffer plug valve. Buffer plug valve should be able to prevent a large amount of water spray, but does not affect a large number of exhaust, thereby preventing the efficiency of water delivery is affected, and effectively prevent the occurrence of water hammer.

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