Characteristics of elastic seat seal gate valve - Wuzhong instrument

(1) The conditioning valve does not operate. The symptoms and causes are as follows: 1. No signal, no air source. (1) The air source is not opened, (2) because the water contained in the air source freezes in winter, resulting in the blockage of the air duct or the blockage of the filter and pressure reducing valve, (3) the compressor is faulty; (4) Leakage of air source main pipe. 2． ...

Valves are control components in fluid transportation systems, which have the functions of shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves for fluid control systems, from the simplest shut-off valves to the most complex valves used in automated control systems, are available in a variety and size.

(1) The direction of the thermal relay device shall be the same as the specified direction, and the general inclination shall not exceed 5°. If it is installed with other electrical appliances, it should be installed under other electrical appliances as much as possible to avoid the influence of heat generation from other electrical appliances. (2) When wiring the device, check whether the wiring is correct, ...

Knife gate valve is a kind of valve, which is called knife gate valve because of its different structure. It has outstanding circularity through the use of some special media, such as some viscous media, granular media, etc. It solves some of the problems of modern equipment and becomes an indispensable component of modern equipment ...

1. According to the use occasion and use of the valve, confirm the driving method: manual, electric, pneumatic, and hydraulic. 2. Selection of manual methods: The standard of ball valve and butterfly valve "DN150 can be driven by a handle; Standard DN200 should be used to drive worm gearbox. b. Gate valve ...

1. Elastic ball valve (i.e. orbital ball valve) The elastic ball valve is the orbital ball valve, and its ball is elastic. The ball and the seat seal ring are made of metal materials, and the specific pressure of the seal is very large, and the pressure of the medium itself can not meet the requirements of the seal, so it is necessary to apply external force. This...

In the process of use, several problems are usually presented in the direction of (FO, FC, FL), and the "fault" in the valve fault closing/obstacle opening refers to: the action of the valve when the gas source is gone. For the fault location of pneumatic valves, it is mainly divided into several situations: ...

1) Casting: a kind of data molding method. The molten metal liquid is placed into the mold of the desired shape, allowed to condense, cooled and then removed from the product. 2) Forging: After heating the metal profile ...

The self-operated conditioning valve, also known as the self-operated control valve, relies on the pressure and temperature of the medium flowing through the valve as the 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 drives the valve disc to change the opening of the valve and reach the conditioning pressure.

A safety valve is an automatic valve that uses the medium's own force to expel an additional amount of fluid without any external force to avoid the pressure exceeding the additional safety value. When the pressure has recovered to normal, the valve closes again and prevents the continuous flow of the medium. (TSG ZF001-2006)

　　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 ...

"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" ...

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. ...

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 ...

Valve is a device used by Gongliang to control the direction, pressure and flow of fluid in the fluid system. A valve is a device that allows the flow or suspension of the medium (liquid, gas, powder) in the piping and equipment, and can control its flow. The valve is a controlling part in the pipeline fluid delivery system, ...

Generally, the selection of control valve is mainly based on the nature of the medium, process parameters, use requirements, etc. 1. The properties of the medium should be clearly attributed to which of the following: (1) General fluids (2) High viscosity, fluids containing suspended solids, fibrous and other fluids (3) Toxic or high...

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. 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. The human element Because of the errors caused by human elements, including misreading, miscalculation and parallax. Misreading often occurs in measuring tools such as vernier rulers and centimeter cards. The vernier scale is likely to misread a small reading, such as 10.02 mm or 9.98 mm at 10.00 mm. Divide...

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 ...