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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
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
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
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.
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.
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
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
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
Common faults and causes of Gate Valve
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. 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
Gate Valve discharge and seat back pressure adjustment
(1) The Gate Valve adjusts the exhaust pressure and back pressure of the valve and must implement a Universal Valve opening test. Therefore, it is only possible after large-capacity testing equipment or the relief valve is installed in a protective device. Different valve adjustment methods. The structure has a valve disc holder and a seat adjustment ring. The second is t
What are the various structural functions of the Universal Valve?
1. Lever hammer type Universal Valve: Lever hammer type Universal Valve. The force of the weight is amplified by the lever and then loaded on the Gate Valve. The magnitude of the load remains unchanged during the opening and closing process of the valve, so the force transmitted from the valve stem is basically unchanged. Its disadvantage is that it is sensitive to vibration and has poor seat return performance. The Universal Valve with this structure can only be used on fixed equipment. The mass of the weight should generally not exceed 60KG to avoid difficulty in operation. The cast ir
Lower limit of Check Valve pressure range
1. The Check Valve is adjusted to set the value to the opening pressure required by the user. If the user has a spring pressure level, the stamping parts factory should base it on the lower limit of the pressure range. 2. When using a Universal Valve installed in front of protected equipment or before installation, you must readjust the installation site to ensure that the constant pressure va
Check Valve structural characteristics and installation requirements
Check Valve are divided according to their structural forms and can be divided into pendulum type, lever type, spring type and pilot type (pulse type); according to the valve body structure, they can be divided into two types: closed type and non-closed type. The closed Universal Valve means that the discharged medium does not leak out and is discharged along the outlet to the designated location. It is generally used in toxic and corrosive media. For Universal Valve for air and steam, non-closed Universal Valve are often used.
Universal Valve selection principles
The Universal Valve 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. . Universal 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 role in protecting personal safety and equipment oper
Check Valve is an important safety accessory for pressure-bearing special equipment
1. The Check Valve is an important safety accessory for pressure-bearing special equipment. The Check Valve is an automatic valve that uses the force of the medium itself to discharge a rated amount of fluid without resorting to any external force to prevent the pressure from exceeding the rated value. When the pressure returns to normal, the valve will close again and prevent the medium from continuing to flow out. Check Valve is an important safety accessory for special pressure-bearing equipment such as boilers, pressure vessels and pressure pipelines. It is a safety device installed
Analysis of the key parts of the Check Valve, mastering the basic knowledge will make it easier
The Check Valve uses the opening and closing parts in the control valve to adjust the flow of the medium. At the same time, it uses the pressure behind the valve to adjust the opening of the opening and closing parts to keep the pressure behind the valve within a certain range. The Check Valve uses a piston to balance the pressure. The piston has high friction in the cylinder and is less sensi
How to install a Check Valve, master the basic knowledge to get started
Check Valve is suitable for water media in non-corrosive situations. It is used to cut off and open the medium and cannot be used to adjust the flow rate. Its structure is designed based on the three-dimensional eccentricity principle, so that the spatial motion trajectory of the sealing surface reaches an ideal state. There is no friction and no interference between the sealing surfaces. The valve plate sealing ring adopts a multi-layered structure with compatible hard and soft seals, thus making the Check Valve more reliable. Sealing, corrosion resistance, high temperature resistance a
What types of Check Valve are there? You must learn the basics
Check Valve and flange gate valve are the same type of Universal Valve, consisting of an electric actuator or air actuator and a stop valve. The difference is that the valve body is closed, and the valve body is the center line of the valve body. It is a kind of Universal Valve that can open and close. Gate valves are mainly used to cut off, distribute and change the flow direction of media on pipelines. Two-piece ball valves and three-piece ball valves are new Universal Valve that have been widely used in recent years.
Analysis of the function of Check Valve, only by mastering the basic knowledge can it be truly used
The Check Valve can rotate 90 degrees and close firmly with a small rotation torque. The completely equal valve body cavity has little resistance to the medium and provides a straight flow path. The main features of the Check Valve are its compact structure, easy operation and easy repair. Check Valve can be used to control the flow of various fluids such as air, water, steam, various corrosive media, muddy water, oil, liquid metal and radioactive media. The valve body can be integral or combined. This kind of Universal Valve is generally installed horizontally in the pipe.
How much do you know about stop valves? Basic knowledge is not missing at all.
The stop valve is also called a Check Valve, which prevents the backflow of media in the pipeline. The switch component uses the flow and power of the medium to automatically switch. The Universal Valve that prevents the backflow of the medium is called a stop valve. Stop valves are automatic valves that are mainly used on pipelines with one-way flow of media to allow one-way flow of media and prevent accidents. Suitable for clean media, not suitable for media containing solid particles and high viscosity.
Understand the basic knowledge of Check Valve to avoid the risk of misuse
The Check Valve consists of a pneumatic actuator and a Check Valve. The Check Valve opens and closes according to the circular butterfly plate that rotates on the valve axis, and the air valve that makes the operation effective is mainly used as a stop valve. In addition, it is designed to have both adjustment and segment valve adjustment functions. Nowadays, the use of Check Valve in low-pressure large and medium-diameter pipelines has increased.
How to use Check Valve, understand the basic knowledge to use it with confidence
The butterfly plate of the Check Valve is installed in the diameter direction of the pipe. In the cylindrical channel of the Check Valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle between 0° and 90°. When rotated to 90°, the Universal Valve is fully open. 1. Characteristics of Check Valve ①The sealing ri
Introduce questions about Check Valve knowledge
Today I would like to introduce to you some brief introduction to the Check Valve and its working principle. The butterfly plate of the Check Valve is installed in the diameter direction of the pipe. In the cylindrical channel of the Check Valve disc, the disc-shaped butterfly plate rotates around the valve axis with a rotation angle between 0° and 90°. When rotated 90°, the valve
Briefly describe the use of Check Valve
The Check Valve is not special in fact. It is also evolved from the gate valve. It uses a gear to rotate 90 degrees to drive the valve stem to lift to achieve the purpose of opening and closing. Its torque is small and its operation is particularly simple. The Check Valve not only has a simple structure and good sealing performance, but is also small in size, light in weight, low in material c
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