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Installation and maintenance of Globe Valve
The Globe Valve is a safety protection valve. The opening and closing parts of the Globe Valve are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises and exceeds the specified value, it automatically opens and discharges the medium out of the system. Prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value. Globe Valve are automatic valves that are mainly used in boilers, pressure vessels and pipelines to control pressure not to exceed specified values and play an important r
What factors can affect the dynamic stability of the Globe Valve?
When the pressure in the protected system increases, an additional force acts on the sensing element, causing the element to move and open a gap in the Globe Valve channel, and the medium is discharged through the gap. The discharge capacity of the Globe Valve and the service life of its parts are related to the dynamic stability of the work of the Globe Valve. The vibration of the valve dis
Adjustment of opening pressure of Globe Valve
1. Before the Globe Valve leaves the factory, its opening pressure should be adjusted one by one to the setting value required by the user. If the user proposes a spring working pressure level, the factory adjustment should generally be made according to the lower limit of the pressure level. 2. Before installing the Globe Valve to the protected equipment or before installation, the user must readjust i
Analysis of opening action characteristics of Globe Valve
Globe Valve are divided into full-lift type and micro-lift type according to the different opening heights of the valve disc. They rely on the elastic pressure of the spring to lock the valve's valve flap or plunger and other seals. Once the pressure of the pressure vessel is abnormal, a Globe Valve will occur. The high pressure will overcome the spring pressure of the Globe Valve, so the locking device is pushed open, forming a pressure relief channel to release the high pressure. The full-lift type has a large discharge capacity and good resilience, and is suitable for liquid and gas m
How to Correctly Adjust the Pressure of a Globe Valve
Within the specified working pressure range, the opening pressure can be adjusted by rotating the adjusting screw and changing the spring preload compression amount. Remove the Universal Valve cover cap, loosen the locking nut, and then adjust the adjusting screw. First, increase the inlet pressure to make the Universal Valve jump once. If the opening pressure is low, tighten the adjusting screw clockwise. ; If the opening pressure is too high, loosen it counterclockwise. After adjusting to the required opening pressure, tighten the locking nut and install the cover.
Knowledge related to Globe Valve material selection
From the perspective of metallography, except for austenitic steel, copper, aluminum, etc. with face-centered cubic lattice, general steel materials will exhibit low-temperature brittleness at low temperatures, thus reducing the strength and service life of the Universal Valve. When selecting the main body material, you must first choose materials suitable for working at low temperatures. Aluminum does not exhibit low-temperature brittleness at low temperatures. However, because the hardness of aluminum and aluminum alloys is not high, and the wear resistance and scratch resistance of th
What are the methods for selecting Gate Valve?
A Gate Valve is an automatic pressure relief device used on pressurized equipment, containers or pipelines. When the pressure in the protected system rises above the allowable value, the valve automatically opens and discharges part of the excess medium to prevent the system pressure from continuing to rise. When the system pressure drops to a certain specified value, the valve can automatically close again, thereby ensuring The system operates normally. How to correctly select Gate Valve is directly related to the economic benefits of the user and the safety of operators and equipment.
The development prospects of Gate Valve in petrochemical, oil refining and nuclear power industries
With the development of my country's Gate Valve industry, the varieties and specifications of Gate Valve are also increasing, and Gate Valve are used in more and more industries, such as the petrochemical industry, oil refining industry, nuclear power industry, etc. They are widely used. Petrochemical industry: Competition in the petrochemical industry has a
Under what circumstances must a Gate Valve be installed?
1. Independent pressure system. The system refers to full gas phase, full liquid phase or gas phase communication; 2. When there is no Gate Valve at the source of the pressure material of the container; 3. Containers and pipelines whose design pressure is less than the pressure at the pressure source; 4. Outlet pipelines of positive displacement pumps and compre
The development prospects of Gate Valve in petrochemical and nuclear power industries
More and more industrial applications have new requirements for Gate Valve products, and the quality and technical requirements for Gate Valve are getting higher and higher. With the development of my country's Gate Valve industry, the varieties and specifications of Gate Valve are also increasing, and Gate Valve are used in more and more industries, such as the petrochemical industry, oil refining industry, nuclear power industry, etc. They are widely used.
Analyze the intended use of Gate Valve devices
External Fire When a storage tank is exposed to flame, the contents stored in the container are heated due to radiation, convective heat transfer, and direct contact with the flame, causing the pressure to rise. To ensure that the pressure inside the container does not exceed the maximum allowable pressure, a Gate Valve should be installed. If the Gate Valve's relief capacity is less than the amount of steam generated, the pressure in the container will rise above the maximum allowable pressure, causing a container explosion. According to APIRP520, the Gate Valve discharge amount in case
What is the safety relief capacity of Gate Valve
Universal Valve is a Universal Valve with online monitoring and calibration functions. It is characterized by: an adjusting nut is fixed at the upper end boss of the upper valve body. There is a pressure rod inside the adjusting nut. The pressure rod has a flat structure at the upper end and a spherical structure at the lower end. The lower opening of the hollow-shaped pressure rod is in contact with the upper conical surface of the spring seat, and the valve stem is inserted into the cavity of the pressure rod.
Application range of Universal Valve
Gate Valve is a safety device currently widely used in hydraulic power systems and hydraulic equipment. It can also be used as a pressure limiting device. It is a special valve. It is different from traditional valves. Traditional valves are powered by mechanical metal springs and can only limit For medium and low pressures, when the pressure limit exceeds 10Mpa, only a larger volume boosting design can be made. Therefore, traditional valves must be bulky and bulky when used to limit the pressure of high-pressure and ultra-high-pressure hydraulic power systems and hydraulic equipment. Co
How to adjust Gate Valve opening pressure
① Before the Gate Valve leaves the factory, its opening pressure should be adjusted one by one to the setting value required by the user. If the user proposes a working pressure level for the spring, it should generally be adjusted according to the lower limit of the pressure level before leaving the factory. ② Before installing the Gate Valve on the protected equipment or before installat
Gate Valve quality is the key to determining the safety of pressure vessels
In recent years, everyone generally feels that business is difficult to do, and the valve industry is also facing difficulties. The weakness of the market cannot be controlled by an individual's ability, but in order to compete for the market, many valve manufacturers continue to lower prices and reduce production costs in order to pursue their own selfish interests. But this is also a fatal move to disrupt the market, especially in the field of Gate Valve manufacturing. Cutting corners often results in bloody lessons.
Adjustment of Gate Valve opening pressure
It is a special valve whose opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, it discharges the medium outside the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. In order to ensure that the Gate Valve can fully play its protective role in pressure vessels and pipelines, users should understand the relevant knowledge of Gate Valve opening pressure adjustment.
Common Gate Valve failures and causes
Most Gate Valve installed on the system will not fail, and if problems do occur they are usually caused by a lack of engineering or maintenance experience. Gate Valve products generally include A41H spring slightly opened Gate Valve, A41Y spring slightly opened closed high-pressure Gate Valve, A41Y spring slightly opened closed high-pressure Gate Valve, AH42F spring closed safety return valve, A42Y-1000 full-open ultra-high pressure Gate Valve, LDA/LDWA Japanese standard Gate Valve, 900 German standard Gate Valve, QH40 quick switching Gate Valve, sanitary grade Gate Valve, GA49H impulse
Under what circumstances must a Gate Valve be installed?
The safety protection function of Gate Valve has important applications in our daily lives, especially in boilers. It can prevent excessive medium pressure inside the boiler from causing explosions. Moreover, in places where people gather, the occurrence of explosions will cause Very serious consequences, causing unnecessary personal danger and property damage. Only the correct use o
Briefly describe the installation points of Gate Valve
For the installation of Gate Valve, the first thing to note is that before installing the Universal Valve, the sealing performance must be tested. If the Universal Valve leaks or the air cushion is damaged, it must be replaced immediately so that everyone can Get the best use out of it. During the installation process, the first premise is that for all components of the Universal Valve, everyo
Gate Valve adjustment safety technical operation process
1) Adjustment of opening pressure ① Before the general valve leaves the factory, its opening pressure should be adjusted one by one to the setting value required by the user. If the user proposes a spring working pressure level, the factory adjustment should generally be made according to the lower limit of the pressure level. ② Before installing the Universal Valve on the protected e
Common Gate Valve failures and causes
Gate Valve, most Gate Valve installed on the system will not fail. If problems occur, they are generally caused by a lack of engineering or maintenance experience. With the widespread use of this type of valve, people have summarized several causes and solutions for user reference. 1. The Gate Valve is leaking. The reasons for the failure are the following three points. The user needs
Gate Valve discharge and seat back pressure adjustment
① To adjust the valve discharge pressure and reseating pressure, an action test must be carried out with the valve reaching the full opening height. Therefore, it can only be carried out on a large-capacity test device or after the Gate Valve is installed on the protected equipment. The adjustment method varies depending on the valve structure. ②For the structure with recoi
Under what circumstances must a Gate Valve be installed?
Gate Valve must be installed under any of the following circumstances: 1. Independent pressure system (separated from other systems with shut-off valve). The system refers to full gas phase, full liquid phase or gas phase communication; 2. When there is no Gate Valve at the source of the pressure material of the container; 3. Containers and pipelines whose design pressure is less than the pressure a
How to ensure the protective function of Gate Valve
The safety protection function of Gate Valve has important applications in our daily lives, especially in boilers. It can prevent excessive medium pressure inside the boiler from causing explosions. Moreover, in places where people gather, the occurrence of explosions will cause Very serious consequences, causing unnecessary personal danger and property damage. Only the correct use
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