Technical characteristics and structure of single eccentric sealed butterfly valve - Wuzhong instrument

(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 ...

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

Now the valve market is mixed, and illegal traders pretend to be innovative valves to be shoddy in order to make huge profits, which brings great safety hazards to the device project. Therefore, it is necessary to introduce to us the inspection of innovative valves. Now the valve market dealers mainly exist in the valve counterfeiting ...

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, ...

The basic structure of the centrifugal pump is composed of six parts, namely the impeller, the pump body, the pump shaft, the bearing, the sealing ring, and the stuffing box. 1. The impeller is the core part of the centrifugal pump, its speed is high and the output is large, and the blades on the impeller play a role in the ...

Now the valve market is mixed, and illegal traders pretend to be innovative valves to be shoddy in order to make huge profits, which brings great safety hazards to the device project. Therefore, it is necessary to introduce to us the inspection of innovative valves. Now the valve market dealers mainly exist in the valve counterfeiting ...

The biggest difference between the electric single-seat conditioning valve and the electric sleeve conditioning valve lies in the performance and application, but both have their own advantages and shortcomings, and the advantages of one may be the lack of the other, which can complement each other and be used in different occasions. There is no difference in appearance, first of all, the two ...

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.

First, there is a leak in the safety valve. The industry said that when there is a small leakage in the safety valve, it is generally not easy to find, but even a small leakage point will expand in the erosion. The test method is to test ...

The self-operated control valve, also known as the self-operated control valve, is based on the pressure and temperature of the medium flowing through the valve itself as an energy source, and uses the reaction signal (pressure, pressure difference, temperature) at the output end of the valve to be transmitted to the actuator through the signal tube, and then drives the valve disc and then changes the opening of the valve to achieve the adjustment pressure.

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; ...

Stainless steel globe valve is a kind of globe valve, the specific stainless steel raw materials are CF8, CF3, CF8M, CF3M, different raw materials are selected, can be separated from water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. Stainless steel globe valves are divided into manual stainless steel shut-offs.

1. Confirm the selection criteria (1) Process fluid conditions: fluid name, flow rate, inlet and outlet pressure, pressure difference during normal operation, pressure difference when valve is closed, fluid temperature, specific gravity, viscosity, whether there are suspended solids, fibrous, muddy, etc. Sometimes it is possible to part with the most ...

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.

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 ...

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.

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 ...

For valves in operation, all kinds of valves should be complete and defective. For example, the bolts on the flange and bracket should not be short, and the threads should be free of defects, and no loosening is allowed. The fastening nut on the handwheel, if found to be loose, should be ...

The shut-off valve is a kind of actuator in the automation system, which is composed of a multi-tension spring pneumatic membrane actuator or a floating piston actuator and a regulating valve, which receives the signal of the regulating instrument and controls the blocking, switching or switching of the fluid in the process pipeline. It has a simple structure, sensitive response, and ...

1. Pneumatic valves include conditioning valves and blocking valves, the effect of the two is different, although the flow rate of the conditioning valve can also be adjusted to 0, but the blocking valve is generally used for urgent blocking, and the valve positioner is generally a cylinder valve. The conditioning valve is with a pneumatic membrane and a large disc, in addition to being able to ...