Wuzhong instrument HCB cage double-seat control valve body type

1. Remove the nut and identification plate at the upper end of the valve stem, and look at the lock nut raw material inside, the raw material is brass, otherwise it is a counterfeit product. 2. Look at the steel seal, the valve steel seal is pressed on it before the valve has passed the heat treatment, and the professional steel seal skills are used.

Routine maintenance of pneumatic conditioning valves When the conditioning valve is packed with graphite-asbestos, lubricating oil should be added to the packing once in about three months to ensure that the conditioning valve is flexible and easy to use. If it is found that the pressure cap of the packing is very low, the packing should be compensated, such as the PTFE dry packing is found to be hardened ...

　　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. Corrosion of valves is usually understood as the damage to the metal materials of valves under chemical or electrochemical environmental effects. Because the corrosion phenomenon occurs in the spontaneous interaction between the metal and the surrounding environment, therefore, how to block the metal from the surrounding environment or more use of non-...

1. According to the requirements of different flow characteristics, the electric sleeve control valve can be easily replaced with a linear flow characteristic sleeve or an equal percentage of flow characteristic sleeve, and can replace the sleeve with different flow capacity according to the different requirements of flow size. 2. Electric sleeve simple control valve in high temperature ...

1. Introduction to gate valves Gate valve refers to the valve in which the opening and closing parts (rams) move in the straight direction of the medium (channel axis) to complete the opening and closing. Among the various types of valves, gate valves are the most widely used one. Gate valves are mainly used as shut-off medium in pipelines, i.e. ...

1. The corrosion of the valve is usually understood as the damage to the metal material of the valve under the chemical or electrochemical environmental effect. Because the corrosion phenomenon is presented in the spontaneous interaction between the metal and the surrounding environment, therefore, how to isolate the metal from the surrounding environment or more use non-...

When using stainless steel multistage pumps, it is first necessary to confirm the usefulness and functional parameters of the multistage pump and select the pump type. Criteria and basis for the selection of multistage pumps: 1. Make the type and function of the selected multistage pump fit the process parameters such as flow, head, pressure, temperature, NPSH, suction stroke, etc.

The flow rate and velocity of the valve mainly depend on the diameter of the valve, and are also related to the resistance of the structure of the valve to the medium, and at the same time have an intrinsic relationship with the pressure, temperature and concentration of the medium of the valve. Two...

The stem axis of the globe valve is perpendicular to the seat sealing face. The relatively short open or closed stroke of the valve stem and the very reliable blocking action make this valve very suitable for the blocking or adjustment of the medium and the economical application. ...

Load the organization The role of the loading tissue is to apply a downward loading force from the top of the pressure reducing valve. The loading structure of the FITOK pressure reducing valve is mainly the loading of tension springs. Tension spring loading has the advantage of reliability and low cost, and is the most versatile loading device in pressure reducing valves.

Cryogenic valves are mainly used in ethylene, liquefied natural gas units, air separation equipment, petrochemical tail gas separation equipment, liquid oxygen, liquid nitrogen, liquid argon, carbon dioxide cryogenic storage tanks and tankers, pressure swing adsorption oxygen production devices, etc., the main varieties are cryogenic ball valves, cryogenic globe valves, etc. ...

1. The sealing surface is uneven and cannot constitute a sealing line: 2. The connection between the valve stem and the closure is suspended, irregular or worn; 3. The valve stem is tortuous or the assembly is not correct, so that the closure is skewed or mismatched: Fourth, the sealing surface raw materials are not selected properly or not according to the working conditions.

1. The safety valve should have the equipment to prevent the hammer from moving by itself and the guide frame to limit the lever from deviating, and the spring-type safety valve should have the equipment to raise the handle and prevent the adjustment screws from being twisted at will. 2. It should be installed straight in the pot merchant, the container ...

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 ...

1. High-precision operation, can complete rapid palletizing and destacking operations. (1). The conditions of the process Factors such as temperature, pressure, flow, viscosity, corrosiveness, toxicity, pulsation and other factors in the process determine the appearance of the ...

Scientific and technological innovation, Wuzhong Instrument has gone through a road of deep integration of informatization and industrialization. "There are too many foreign 'stuck neck' technical products. The control valve industry is all-encompassing, with 100,000 varieties and specifications, more than 1 million parts, and more than 5,000 quality control points.

　　Selection: The butterfly plate of the butterfly valve is installed in the diameter direction of the pipe. The butterfly valve has a simple structure, small size, light weight, only a few parts, and only needs to rotate 90° to quickly open and close, the operation is simple, and the ...

There are a total of eight functions of the conditioning valve, and the eight functions of the full-function ultra-light conditioning valve are excellent, so it is called "full-function valve". 1. The conditioning function is one of the main functions of the conditioning valve, which is manifested as (1) flow characteristics; (2) Adjustable ratio R; ...

(1) Thread damage due to excessive operation; (2) lack of lubrication or lubricant failure; (3) Stem bending and torsion; (4) The surface finish is not good; (5) Cooperative public service is forbidden and bites too tightly; (6) The stem nut is skewed; (7) Improper selection of information, such as valve stem and ...