1, gee
Tianjin High Energy Valve Co., Ltd. was formerly known as Tianjin Tanggu Valve Factory in 2004. Tianjin High Energy Valve Co., Ltd. is a professional factory that produces valve products and valve accessories. The valve consists of two parts: double-cavity diaphragm (piston) transmission mechanism and angle stop valve.
Hydraulic and pneumatic angle quick-opening sludge discharge valve is mainly suitable for water supply companies and various pools to remove sediment or dirt at the bottom of the pool. It can also be installed in industrial pipelines with water, gas, oil and other working media for interception.
2. Rocker arm valve
Headquartered in Shanghai, Shanghai Rock Valve Co., Ltd. is a professional valve manufacturing company integrating R&D, production, sales and service. Our company specializes in producing all kinds of valves, and can produce all kinds of special valves according to user's requirements.
3. Valin
Since its opening, Wuxi Valin Valve Industry Co., Ltd. has taken quality first, service first and honesty first as its business purpose. Over the years, it has been well received by users and the company is committed to diversified development.
Mainly engaged in thermal power boilers, power station auxiliaries, valve electric actuators, measurement and control equipment, complete sets of electrical equipment, mud pump valves, American standard valves, oilfield valves, special valves for buildings, cooling and decompression devices, various pump products and stamped flange plates.
4. Chaoan Pneumatic
Wuxi Chaoan Machinery Manufacturing Co., Ltd. is located in Hongming Village, Luoshe Town, Huishan Economic and Technological Development Zone. It is a modern high-tech enterprise integrating design, research and development, production and sales, which is an automation equipment product and service provider mainly producing pneumatic components, solenoid valves, cylinders and gas source processing components.
5. Hui Yuan Pneumatic
Fenghua Xikou Hui Yuan Machinery Factory specializes in producing pneumatic components, including ASC series one-way throttle valves; RE series; KLA series; QE series quick exhaust valve, etc. Excellent quality and favorable price.
Shopping guide:
1, the displacement is small, and it often takes a long time to restore the original water supply capacity after water supply is stopped; At the same time, the exhaust system recovered to normal water supply capacity in a short time.
2. The closing pressure indicates the upper limit of the exhaust capacity of the exhaust valve. The exhaust capacity of the exhaust valve is not only related to the diameter of the valve, but also related to the gas pressure difference inside and outside the valve.
In general, the opening and closing of large valves are constrained by the up-and-down displacement of the floating ball, and the displacement of the floating ball is controlled by the liquid level in the valve cavity. When a large amount of gas is discharged quickly and intensively, the floating ball or valve plate is closed by the impact thrust of the gas, which affects the normal exhaust. The air pressure when this phenomenon occurs is called the air closing pressure of the valve.
When the valve plate is pushed against the valve hole by the floating ball, the air flow will be interrupted instantly, the valve plate will fall down again, the air flow will form again, the valve plate will close again, and the system will oscillate and close.
In order to avoid the adverse effects caused by the shut-off pressure, the appropriate valve size should be selected when configuring the exhaust valve to ensure that the exhaust pressure corresponding to the maximum displacement at the valve installation position is lower than the shut-off pressure. The above is the most important point in choosing a suitable exhaust valve.
Because if the air closing pressure is too low, the air often has not started to be discharged, and the floating ball in the exhaust valve has been floated by the air, so close the exhaust hole.
Generally, the air closing pressure of a good exhaust valve can reach 0.0 17MPa, which has sufficient capacity to discharge the air in the pipeline quickly. Therefore, when the air pressure in the valve body is greater than 0.0 15MPa, the air velocity has reached the maximum flow rate (90m/s).
3. Water closing pressure range Some exhaust valve devices are located at the highest point of the pipeline. Because the water pressure in the pipeline is sometimes very low, some exhaust valves need water pressure higher than 0.0 15MPa to be completely closed. Below this pressure, water will leak, so the larger the closed water pressure range, the better. Generally, 0.0 12~ 1.0MPa is the most commonly used range.