Quick exhaust valve
I. Introduction:
Quick exhaust valves are suitable for pipelines transporting industrial water. They are devices used to quickly remove gas from pipelines, which can improve the efficiency of water conveying equipment and protect pipelines from deformation and rupture, making them essential equipment for pipelines. They can eliminate gas in pipelines, reduce resistance and save energy. When the pipeline is under negative pressure, they can quickly and automatically inhale air to prevent pipeline rupture. Their exhaust capacity is several times that of ordinary double-hole exhaust valves. The float bracket is made of stainless steel, ensuring a long service life, safety and reliability. The valve has a cylindrical valve body, with a stainless steel float and plug as its main internal components. Quick exhaust valves are installed at pump outlets or in water supply and distribution pipelines to discharge a large amount of accumulated air in pipelines, thereby improving the efficiency of water pipes and pumps. Once negative pressure occurs in the pipeline, this valve can quickly inhale air to prevent damage to the pipeline caused by negative pressure.
II. Working Principle:
When the pipeline is in operation, the float stays at the bottom of the bowl to perform large-scale exhaust. When the air in the pipeline is exhausted, water rushes into the valve, passes through the bowl and acts on the float, causing the float to rise and close. During normal pipeline operation, a small amount of gas will gather in the valve to a certain extent, the water level in the valve drops, and the float drops accordingly, and the gas is discharged through the small hole. If the pump stops, negative pressure will be generated at any time, and the float will drop at any time to perform large-scale air inhalation and ensure the safety of the pipeline.
III. Technical Parameters:
1. Medium: Clear water
2. Temperature: Normal temperature
3. Valve body: Gray cast iron HT200, ductile iron, carbon steel, stainless steel
4. Float and plug: Stainless steel
5. Sealing material: Rubber
6. Valve body test pressure: 1.5 MPa
7. Float and sealing test pressure: 0.05-1.1 MPa, no water leakage
IV. External Dimensions:
Nominal Diameter | D | D1 | D2 | D3 | H | Z-φd |
DN(mm) | ||||||
25 | 115 | 85 | 57 | 150 | 240 | 4-14 |
50 | 160 | 125 | 102 | 165 | 270 | 4-14 |
80 | 195 | 160 | 138 | 200 | 300 | 4-18 |
100 | 215 | 180 | 158 | 220 | 335 | 8-18 |
150 | 280 | 240 | 212 | 290 | 430 | 8-13 |
200 | 335 | 295 | 268 | 340 | 505 | 8-23 |
| Machinery & Equipment/Valves/Air Vent Valves | |
