Huan Qi UPVC exhaust valve drive mode can be selected automatic , UPVC exhaust valve connection mode can be selected flange and thread , structure form can be selected fast , UPVC exhaust valve sealing structure can be selected soft seal , pressure range PN1.0MPa, nominal diameter is DN15-DN50, material can be selected , PVC, UPVC, FRPP etc. , because the use range of the valve is very wide, the same valve has different matches in different occasions and working conditions. If you are not a professional, welcome to call our company for consultation. Our company has professional technicians to serve you! Technical department phone: 021-57562878
UPVC exhaust valve is suitable for industrial medium water pipeline, as a device for quickly removing gas in the pipeline, to improve the efficiency of water delivery equipment and protect the pipeline from deformation and rupture, it is a necessary equipment for the pipeline. It can remove the gas in the pipeline, reduce resistance and save energy. When the pipeline is under negative pressure, it can quickly and automatically inhale air to prevent pipeline rupture. The air exhaust capacity is several times that of ordinary double-hole air exhaust valve. The float ball bracket is made of stainless steel, with long service life, safety and reliability.
Huan Qi UPVC exhaust valve adopts positive pressure exhaust and negative pressure intake design, with exhaust and intake functions. The exhaust valve automatically discharges a small amount of air accumulated inside the pipeline under pressure. Negative pressure intake can discharge the air in the pipeline when filling the empty pipeline with water and automatically intake the air when emptying the pipeline. Especially in the condition of water column separation, it will automatically open to introduce air into the pipeline to eliminate vacuum.
Second, the basic functions of UPVC exhaust valve:
The large intake and exhaust port of the low pressure intake and exhaust component ensures that air can enter and exit at a high flow rate and high-speed exhaust air flow, even if mixed with water mist, will not prematurely close the exhaust port and cause air leakage. The exhaust port will only be closed after the air is completely discharged. Whenever the system pressure is lower than atmospheric pressure, for example, when water column separation occurs, the air valve will immediately open to introduce air into the system to prevent vacuum formation. At the same time, timely air intake during system venting can increase venting speed. The exhaust process is stable, which can prevent pressure fluctuations or other destructive phenomena.
Huan Qi UPVC exhaust valve's high-pressure micro exhaust valve can timely discharge the air accumulated at high points in the system under pressure, avoiding the following possible harmful phenomena: the accumulation of air will cause air resistance or blockage: increase the head loss of the system, reduce the flow rate, and even in the case of complete fluid transmission interruption, or cause the following phenomena
Third, the working principle of Huan Qi UPVC exhaust valve:
a, the working process of the air valve when the empty pipe is filled with water:
1. Fully discharge the air in the pipeline to facilitate water filling.
2. After the air in the pipeline is exhausted, water enters the exhaust valve, the float ball rises under the action of buoyancy, and seals the intake and exhaust ports.
3. Subsequently, the gradually accumulated air in the system will gather at the high point of the system, that is, inside the air valve, replacing the water originally present in the valve body.
4. With the accumulation of air, the liquid level in the valve drops, the float ball also drops, pulling the sealing chain (only equipped with vacuum valve), opening the automatic exhaust port, and releasing the air.
5. After the air is released, water enters the air valve again, the float ball floats up, and the exhaust port is sealed.
The above 3, 4 5 steps will continue to cycle during system operation
b, when the pressure in the system is lower than atmospheric pressure (negative pressure is generated), the working process of the air valve
1. The float ball of the air valve will immediately drop, opening the low pressure intake and exhaust port.
2. Huan Qi UPVC exhaust valve air enters the system through this, eliminating negative pressure and protecting the system.
The copyright of the above UPVC exhaust valve is owned by Shanghai Huan Qi, and this document will not be notified separately when the content is changed, and the company has the final interpretation.
