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Pneumatic ball valve is composed of two parts: a cylinder and a ball valve. The cylinder serves as the driving element, and the output shaft provides power to drive the ball core of the ball valve to rotate, achieving functions such as pipeline switching, adjustment, and flow direction switching. For example, pneumatic O-shaped cut-off ball valve, pneumatic V-shaped regulating ball valve, pneumati...
1、 Working principle of check valve Check valve refers to a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself to prevent medium backflow. It is also known as a check valve, one-way valve, backflow valve, and backpressure valve. Check valve is an automatic valve that mainly functions to prevent medium backflow, prevent pump and drive motor reversal...
The regulating valve locator is the main accessory of pneumatic actuators, which is used in conjunction with pneumatic actuators to improve the position accuracy of the valve, overcome the influence of stem friction and medium imbalance force, and ensure that the valve is correctly positioned according to the signal from the regulator. In the following situations, a locator is required: 1. When th...
Selection and setting location of valves 1. Valves used on water supply pipelines are generally selected according to the following principles （1）When the pipe diameter is not greater than 50mm, globe valves should be used, and gate valves and butterfly valves should be used when the pipe diameter is greater than 50mm. （2）When adjusting flow and water pressure, it is advisable to use regulating va...
Explosion proof solenoid valve is a device that encloses all components that may ignite explosive gas mixtures in a single enclosure. The enclosure can withstand the internal explosion of combustible mixtures that penetrate through any joint surface or structural gap of the enclosure without damage, and will not cause the ignition of an explosive environment formed by one or more gases or vapors o...
1.Gate valve refers to a valve that moves the closing element (gate) vertically along the axis of the channel. It is mainly used to cut off the medium in the pipeline, that is, fully open or fully closed. Generally, gate valves cannot be used to regulate flow. It can be suitable for low temperature and high pressure as well as high temperature and high pressure, and can be made of different materi...
This type of valve is used to prevent media backflow, utilizing the kinetic energy of the fluid itself to open and automatically close when flowing in the opposite direction. Permanent at the outlet of the water pump, the outlet of the drain, and other places where fluid reverse flow is not allowed. There are three types of check valves: swing, lift, and clamp. For swing check valves, when the flu...
Anti blocking method for regulating valves (1) Cleaning method Welding slag, rust, slag, etc. in the pipeline cause blockage or jamming in the throttle opening, guide part, and balance hole of the lower valve cover, resulting in scratches and strains on the valve core surface and guide surface, as well as pressure marks on the sealing surface. This often occurs in the early stages of new systems b...
The bellows globe valve, also known as the bellows sealed globe valve, is designed with automatic roll welding to form a metal barrier between the fluid medium and the atmosphere, ensuring zero leakage of the valve stem. The internal structure of the bellows globe valve adopts a bellows structure, and the lower end of the stainless steel bellows is welded to the valve stem to prevent process fluid...
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