The role of the filter - Wu Zhong meter

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. ...

When the gate valve is closed, the sealing surface can only rely on the medium pressure to seal, that is, only rely on the medium pressure to press the sealing surface of the ram to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves are forcibly sealed, that is, when the valve is closed, it is necessary to rely on external force to forcibly ...

Valve is a kind of commonly used hardware products, the valve also has certain technical requirements before assembling and in the process of the device, otherwise the assembled valve may not reflect its own excellent function, what are the technical requirements of the valve in the assembly process? ...

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 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 ...

G2010 ball valve for long-distance pipeline is designed for the transportation of long-distance pipeline media, which is a typical long-distance pipeline ball valve, which is suitable for various oil, natural gas, city gas pipelines, and can also be used in the equipment of general chemical products. The valve is completely in line with the United States Petroleum Institute API in terms of performance...

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-...

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 ...

Valves are the most common equipment in chemical enterprises and play a great role. They seem to be simple and easy, but in the actual operation process, they also need to meet the relevant technical requirements, otherwise they will cause safety accidents. Only the valves related to our liquid level appearance are introduced here, and other equipment is not analyzed. ...

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 ...

Insist on the cleanliness of valves and actuators as much as possible. The valve is drained after the flow test. During storage and installation, it is important to avoid the ingress of contaminants. Assuming that there is a problem, check it according to the instructions. Do not use a crowbar or an excessively large ...

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.

"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" ...

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 ...

Gate valves have the following advantages: Low fluid resistance: the medium channel inside the valve body is straight, and the medium does not change its direction of activity when it flows through the gate valve. The torque required for opening and closing is small; It can be used on a ring network pipeline where the medium moves in both directions, that is, the flow direction of the medium is not ...

(1) Under normal circumstances, the valve is not tested for strength, but after repair, the valve body and bonnet or the valve body and bonnet damaged by corrosion should be tested for strength. For safety valves, their constant pressure and return pressure and other experiments should be in accordance with their instructions and the rules of the relevant procedures. ...

Pneumatic butterfly valves are usually composed of a combination of pneumatic actuators and valve bodies and some accessories after debugging. This article first introduces the precautions for the on-site application of pneumatic butterfly valves. 1. The control cabinet sends a signal that the valve does not move, and the pneumatic conditioning butterfly valve is in the device locator after on-site investigation.

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 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-...

The structure of the adjustable pressure reducing valve is composed of a main valve, a pressure feedback system, and a control pipeline. The main valve is composed of main parts such as valve body, diaphragm seat, valve cover, diaphragm, valve stem, valve plate, etc. The adjustable pressure reducing valve is installed on the one-way water supply pipeline in the city, which can reduce the upstream (inlet) pressure of the higher valve.