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04-24

Faults and inspection methods of solenoid valves

Solenoid valve fault will directly affect the switching valve and regulating valve action, the common fault is the solenoid valve does not act, we should be from the following aspects of the investigation:

Faults and inspection methods of solenoid valves

04-15

Matters needing attention in the selection of pneumatic ball valve

Pneumatic ball valve selection three key points of attention cylinder structure diagram the third key point: pneumatic accessories selection solenoid valve: double-acting cylinder one matching two-position five-way solenoid valve or three-position five-way solenoid valve. The single-acting cylinder can be equipped with a two-position three-way solenoid valve. Voltage can choose DC24V,AC220V, etc. Explosion protection requirements should be considered.

Matters needing attention in the selection of pneumatic ball valve

04-08

Several Methods of Correct Selection of Electric Control Valve

Water supply valve main and auxiliary boiler water supply valve, composite water supply control valve control requirements: control boiler water supply, adhere to the boiler liquid level and steam flow. Working condition requirements: when the boiler is claimed, the valve pressure difference can reach 100-300kg, the flow rate is small, the pressure difference is small during normal operation, the flow rate is large, and the adjustable ratio of flow rate is WCB/WC9. regarding the demand of the claimed valve in the double valve system for cavitation resistance and class v closing grade, the composite water feed valve needs to use characteristic valve trim to satisfy the demand of the boiler and normal operation. General valve selection for the shortcomings off. Boiler feed pump small flow circulation valve control requirements.

Several Methods of Correct Selection of Electric Control Valve

04-02

Explore the working principle of pneumatic control valve

The pneumatic conditioning valve uses compressed air as the power source, takes the cylinder as the actuator, and drives the valve with the help of electric valve positioner, converter, solenoid valve, holding valve and other accessories to complete the switching value or proportional conditioning, and receives the control signal of the industrial automation control system to complete the conditioning pipeline medium: flow, pressure, temperature and other process parameters. Pneumatic conditioning valve is characterized by simple control, rapid response, and intrinsically safe, no need to take additional explosion-proof measures. First of all, admit whether the pressure of the air source is normal, and look for the fault of the air source. If the pressure of the gas source is normal, judge the amplifier of the positioner or the electric/gas converter.

Explore the working principle of pneumatic control valve

03-26

What to do to prepare the pneumatic conditioning valve before the device

What to do to prepare the pneumatic conditioning valve before the device

03-04

Electric valves and pneumatic valves are really different

Electric valves are the primary accessories of electric actuators, namely electric actuators, which are mainly used in power plants or nuclear power plants. Due to the demand for a smooth, stable and slow process in high-pressure water systems. The primary advantage of the electric actuator is the high stability and the stable thrust that the user can use. The maximum thrust of the actuator can be as high as 225000kgf, and only the hydraulic actuator can reach such a large thrust.

Electric valves and pneumatic valves are really different

02-25

Use and characteristics of pneumatic control valve

Pneumatic dispatching valve is one of the industrial process control instruments widely used in petroleum, chemical, electric power, metallurgy and other industrial enterprises. According to the operation principle of pneumatic dispatching valve, compressed air is used as the power source, air cylinder is used as the performance arrangement, electric valve positioner, converter, solenoid valve, positioning valve and other accessories are used to drive the valve, end the switching value or share dispatching, receive the control signal of industrial automatic control system, and end the dispatching of pipeline medium: flow, pressure, temperature and other process parameters. Pneumatic dispatching valve is characterized by simple control, fast response, intrinsically safe, no need to take explosion-proof method.

Use and characteristics of pneumatic control valve

02-19

Flow characteristics of electric regulating valve

The flow characteristics of the electric conditioning valve is the relationship between the relative flow of the medium flowing through the electric conditioning valve and its opening degree under the condition that the pressure difference between the two ends of the valve remains constant.

Flow characteristics of electric regulating valve

01-13

How to use the electric valve can extend the life

Daily electric valve maintenance 1. The electric valve should be stored in a dry and ventilated room, and both ends of the passage should be blocked. 2. Electric valves stored for a long time should be checked regularly to remove dirt and apply anti-rust oil on the processing surface.

How to use the electric valve can extend the life

01-07

Stable performance of the pneumatic valve how to choose

Pneumatic valve is a common fluid control equipment in industrial pipelines. It is mainly composed of pneumatic actuators and valves. The valves are driven by tightening clean air to control the circulation and shutdown of pipeline media, and the performance speed is very fast. It is generally used to quickly cut off the application. Pneumatic valves are generally equipped with a variety of accessories, such as solenoid valves, air treatment trio, limit switches, positioners, control boxes, etc. To achieve local control and remote collection control. Assume that for demand-only on and off.

Stable performance of the pneumatic valve how to choose

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