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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.
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
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
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
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
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
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
General valve adjustment safety technical operation process
1) Adjustment of 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 spring working pressure level, the factory adjustment should generally be made according to the lower limit of the pressure level. ② Before installing the Gate Valve on
Understand what is the safe relief capability of a Gate Valve
Gate Valve The discharge capacity of a Gate Valve, that is, the engine, is one of the most important indicators to measure the performance of a Gate Valve. In the "Online Function and Gate Valve and Testing System" patented technology, open valve dynamic displacement measurement issues and related flow mechanisms are studied under the guidance. Main content: Nozzle flow field characteristics and bas
Universal Valve operates normally
The Universal Valve is pressed on the valve seat by the spring force of the valve core. The valve is closed and the valve core top is under the steam. During normal operation, the clamping force under the spring is greater than the upward thrust of the steam, and the valve closes. When the steam pressure reaches the Gate Valve, the steam force is greater than the valve, spool, and rotor pump relief valve exhaust spring force. You can adjust the pressure in the relief valve by changing the pressure of the spring by adjusting the valve stem at the top of the screw.
Universal Valve adjustment technical operation process
(1) Adjustment of 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 spring working pressure level, the factory adjustment should generally be made according to the lower limit of the pressure level. ② Before installing the Gate Valve on
What should you pay attention to when setting up Check Valve?
The Check 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. valve. Check 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 operati
Adjustable Check Valve seating pressure
The Universal Valve relies on the force of the spring to press the valve core on the valve seat, so that the Check Valve is in a closed state, and the bottom of the valve core is pushed upward by the force of steam. During normal operation, the downward pressing force of the spring is greater than the upward thrust of the steam, and the valve is in a closed state. When the steam pressure reaches the Check Valve seating pressure, the force of steam on the valve core is greater than the force of the spring, causing the valve core to lift and the Check Valve to exhaust steam. The seating pr
Performance comparison of Check Valve and bursting disc
1. Check Valve: It reduces the excessive pressure in the container by automatically opening the valve to discharge gas. (1) Advantages: Only the part of the pressure in the pressure vessel that is higher than the specified pressure is discharged, and when the pressure in the vessel drops to the normal operating pressure, it will automatically close, so it can avoid having to discha
The Check Valve must be installed vertically at the highest position of the drum header
As one of the most widely used equipment in the industry, the thermal oil furnace is a pressure vessel. Its safe use is related to the safety of people's lives and property. Therefore, the last fuse of the thermal oil furnace = Check Valve and Universal Valve play a role Therefore, the installation of Check Valve and general valves on thermal oil furnaces must comply with the following technical requirements:
Check Valve, connect and block water flow, master the basic knowledge to achieve
Check Valve refers to a valve that automatically opens and closes according to the flow of the medium itself to prevent the reverse flow of the medium. It is also called a Check Valve, one-way valve, silencer Check Valve, reverse flow valve and back pressure valve. The stop valve is an automatic Universal Valve. Its main function is to prevent the reverse flow of the medium, prevent the pump and drive motor from reversing, and prevent the drainage of the container medium. Stop valves can also be used to supply auxiliary systems where the pressure in the pipeline rises above the system pr
What are the advantages and disadvantages of Check Valve?
The Check Valve is composed of valve body, valve cover, valve rod, column, orifice frame, sealing ring, handwheel and other components. When the handwheel rotates, the valve rod moves back and forth through the up and down motion of the middle of the hole bracket. Complete the opening and closing function of the Universal Valve. The plunger in the valve and the sealing ring are excessively interlocked. By adjusting the flange bolts in the cover, the lateral force of the sealing ring compression and the cylindrical sealing of the hole surface in the valve body and the plunger are achieved
Analyze the key points of Check Valve design
Control valves are an integral part of fluid control activities and play an important role in controlling all fluids. With the development of modern technology, there is an increasing demand for Check Valve in engineering projects. High temperature valves are used in petrochemical, chemical, electric power and other industries. The long-term effect of high temperature will have an impact on the physical and mechanical properties of metal materials. Therefore, in the design and material selection of high-temperature valves, attention needs to be paid to the impact of high temperature.
Understand the basics of Check Valve and let the water flow flow rhythmically
The Check Valve is a closed or cylindrical rotary valve. It is a type of Universal Valve that is connected to or separated from the channel port on the valve body by rotating 90 degrees. Check Valve can be cylindrical or conical in shape. For cylindrical Universal Valve, the passage is usually rectangular. In a cone valve plug, the passage is trapezoidal. These shapes lighten the structure of the Check Valve. It is most suitable as a cutting and connecting medium and for diverting flow, but it can also be used for throttling depending on the applicable properties and the impact resistanc
How to maintain Check Valve, master the basic knowledge to save worry and effort
Today I will introduce to you the application of Check Valve in various situations: Check Valve are an important part of the instrument measuring pipe system, mainly including Check Valve and ball valves. That function is used to open or cut off pipe passages. The valve core of the needle valve is a pointed cone that is inserted into the valve seat like a needle, hence its name. The needle valve is easy to install and connect. It has the advantages of fire protection, explosion protection, high pressure resistance, and good sealing performance. It is a Universal Valve with advanced conne
Check Valve basic knowledge revealed, come and learn
The Check Valve is opened and closed by a ball with a circular through hole, and the ball is rotated along the center line of the valve to open and close the Universal Valve. The special compression molding process is used to make the sealing surface dense and good. The V-type PTFE packing combination ensures zero leakage of the Universal Valve. The ball and valve disc are cast in one piece, which eliminates the possibility of the valve rod escaping from the pressure component due to pressure changes, basically ensuring safety during use. It adopts all-plastic lining technology and is re
Some basic knowledge about Check Valve
Check Valve are mainly used in petroleum, chemical, metallurgical, pharmaceutical and other systems to transport highly viscous media that solidify at room temperature. The insulation jacket of the BJ45W DC jacket Check Valve is welded between the two flanges of the Universal Valve. There are two connection ports of the insulation jacket on the side and bottom of the Universal Valve. DC Check Valve are particularly suitable for pipelines in the chemical and fertilizer industries. The steam in the jacket prevents the media from crystallizing.
A brief introduction to the basic knowledge about Check Valve
Simply put, the Check Valve controls the Universal Valve through an electric actuator to open and close the Universal Valve. This is divided into two parts, the upper part is the electric actuator, and the lower part is the Universal Valve. The operating force distance is larger than that of the Check Valve, and the operating speed of the electric shutter valve switch can be adjusted. The structure is simple and easy to maintain. Due to the buffering characteristics of the gas itself during the action process, it is not easy to be damaged due to blockage, but the control system that requ
Things to note when purchasing Check Valve
When you are purchasing a Check Valve, you will definitely have difficulty in choosing the function, working principle and material of some Check Valve. The following article on Universal Valve is to make it easier for you to choose your own. Required Check Valve. The Check Valve is a control component in the fluid delivery system. It has the functions of shutting off, regulating, diverting flow, prev
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