The steps and basis for selecting the valve - Wuzhong instrument

A low-power electromagnetic microdisplacement controller consisting of a coil backbone, a coil wound around a coil skeleton with a control circuit and a terminal block, and a coil core, characterized by: The coil core is associated with two magnetic columns at both ends ...

Solenoid valve is an industrial equipment controlled by solenoids, and is a basic element of automation used to control fluids, which belongs to actuators and is not limited to hydraulics and pneumatics. It is used in industrial control systems to adjust the direction, flow rate, speed and other parameters of the medium. Solenoid valves can be used with different circuits to ...

1. Smooth mechanism Smoothing is to add a smoothing agent between the two conflict surfaces of relative motion, so that a smooth film is formed between the two conflict surfaces, and the dry conflict appearance that is originally directly touched is separated, and the dry conflict is a conflict between the smooth agent molecules, so as to reduce the conflict and reduce wear, ...

The selection of control valve is a very complex thing, in order to ensure the use of control valves, customers only need to provide process parameters and use requirements to valve manufacturers, because valve manufacturers have rich experience in valve use, so they can provide customers with the best cost-effective valve products. ...

Wuzhong is a leading enterprise in China's process industry automatic control valve industry, founded in 1959, a national third-line construction enterprise. The company has always adhered to the concept of professionalism, dedication, innovation and transcendence.

There are two main reasons for the leakage of cryogenic valves, one is internal leakage; The second is leakage. 1) Internal leakage of the valve The main reason is the deformation of the sealing pair at low temperature. When the temperature of the medium drops to the point where the data undergoes a phase change, the volume changes ...

1. Units and scales (scales) The scale (scale) unit of the temperature gauge is the Celsius temperature (°C). 2. Detect (measure) the penetration length of the element The length of the penetration should be selected in such a way as to insert the detection (test) element ...

It is composed of a pneumatic O-type shut-off ball valve and a pneumatic double-acting actuator. It has the advantages of simple structure, small size, light weight, convenient operation, etc., and can be widely used in automatic conditioning and long-distance control of industrial production processes such as petroleum, chemical industry, hydropower, and textile. ...

1) General purpose valve (general purpose valve): a general term for a wide range of valves, also known as ordinary valves. It is not a valve for a specific condition and a specific purpose. Although there is no clear definition of a universal valve, it mainly refers to a pressure below 2MPa, ...

In all kinds of mechanical connectors, the anti-loosening of bolts is a very important link. So can the tension spring washer be loosened? The principle of anti-loosening of the tension spring washer The anti-loosening principle of the tension spring washer is that after flattening the tension spring washer, the tension spring ...

1. Glander type This is the form that is used a lot. The same form can be different in many details. For example, in terms of hold-down bolts, it can be divided into T-bolts (for low-pressure valves with a pressure of ≤ 16 kg/cm²), stud bolts and loose joints. From the gland point of view, it can be divided into integral and ...

Valve application requirements (1) General gate valves, ball valves, and globe valves are prohibited from dispatching according to their structural characteristics. However, in process design, it is widely used for mediation. Because of the scheduling application, the valve seal has been in a throttling state for a long time, and the impurities in the oil have washed the seal, endangering the seal.

1. Before the device, check whether the valve has notched parts, whether the type is correct, whether there are debris in the valve body, and whether the muffler is blocked. 2. Close the valve and cylinder. 3. Device the cylinder on the valve, the direction of the equipment is parallel or straightened with the valve body, and check whether the screw holes are aligned.

"Pass" and "position" are important concepts of pneumatic reversing solenoid valves. Different "passes" and "positions" constitute different types of pneumatic reversing solenoid valves. Generally speaking, the "two-position valve" and "three-position valve" refer to the valve core of the reversing valve with two or three different operating directions. The so-called "two links" ...

　　A solution to poor sealing function 1) Use unbalanced force to add seal specific pressure method The sealing pressure of the actuator on the valve core is certain, and when the unbalanced force has a tendency to open the valve core, the sealing force of the valve core is two forces.

1. Accounting for traffic The calculation of the flow rate can also be confirmed by referring to the capabilities of fluid handling machinery such as pumps and compressors. Sometimes, a combination of methods is used to confirm. 2. Confirmation of the differential pressure (1) Put the conditioning valve before and after ...

On December 2, 2019, the China-Russia East Route Natural Gas Pipeline Project was officially put into operation. The large-diameter pressure regulator jointly developed and manufactured by Wu Zhong and China Petroleum Pipeline Branch was put into use at Changling Natural Gas Transmission Station in Jilin Province and successfully ventilated. ...

Check valve, also known as check valve, check valve, is a valve used to avoid the backflow of medium in the pipeline, belongs to a class of active valves, because the pump in the abort operation, the medium will flow backwards, if there is no device check valve at this moment, the water hammer effect will occur in the process of backflow, the pipeline ...

1. Leakage of stuffing box This is the primary aspect of running, running, dripping and leaking, which is often seen in the factory. There are several reasons why stuffing box leaks occur: (1) The corrosiveness, temperature and pressure of the filler and the working medium are not suitable; (2) The filling method is wrong, especially the whole filler ...

1. The hydraulic power in the hydraulic ball valve should refer to the opening mode of the valve as hydraulic, which refers to the valve opening device. The latter ball valve refers to the valve type as a valve type and a shut-off valve class. Two: Type Q61N can explain Q as ...