Valve sealing surface grinding is a key step to ensure sealing performance
The sealing performance of the valve directly affects the control effect of the fluid medium and the safe operation of the system, the grinding of the valve sealing surface is one of the important means to ensure its sealing performance, its main purpose is to eliminate the uneven sealing surface, defects and particles, improve the surface smoothness and roughness, so as to achiev
Valve sealing surface material selection factors to consider
Sealing surface is the most critical working face of the valve, the quality of the sealing surface directly affects the service life of the valve, and the material of the sealing surface is an important factor to ensure the quality of the sealing surface.
Therefore, the following factors should be considered when selecting valve sealing surface materials:
① Corrosion resistance.
What are the precautions for manual operation of electric valves
The electric actuator of valve is used to control the valve. If the valve cannot be opened and closed due to some factors, such as power failure, failure of the electric actuator, or is fixed in a certain position, it needs to be operated by hand wheel. So, what should we pay attention to when the valve actuator needs to be manually operated?
Matters needing atte
Pressure valve is a device used in hydraulic system to control and regulate liquid flow pressure.
Its working principle is based on the balance between the liquid pressure on the spool and the spring force. When the pressure in the hydraulic system exceeds the pressure set by the seat, the seat will be subjected to upward force, so that the disc is separated from the seat, and th
Because the seal plays a role in cutting and connecting, adjusting and distributing, separating and mixing media on the valve channel, the sealing surface is often subjected to medium corrosion, erosion, wear and easily damaged.
The reasons for the damage of sealing surface are man-made damage and natural damage. Artificial damage, is due to the design and manufacture not jing, m
Method of preventing the regulator from getting stuck or blocked frequently
01, cleaning method
The welding slag, rust, and residue in the pipeline cause blockage or jam in the throttle orifice, guide part, and balance hole of the lower valve cover, resulting in strain and scratch on the spool surface and guide surface, and indentation on the sealing surface. This often occurs in the initial phase of operation after a new system is put into operation and
Commonly used material heat treatment process of valve body
Valve body blank heat treatment process according to different materials are as follows:
1. Heat treatment of gray cast iron
In order to achieve different purposes, gray cast iron can be subjected to different heat treatments after casting. In the production of valve, the heat treatment processes commonly used for gray cast iron valve body and other parts after casting are: the
Causes and treatment of internal leakage of natural gas ball valve
Causes of ball valve internal leakage
1. Reasons for internal leakage of the valve during the construction period:
① Improper transportation and hoisting causes the overall damage of the valve, resulting in internal leakage of the valve;
② When leaving the factory, the hydraulic pressure is not dried and anti-corrosion treatment of the valve, resulting in corrosion of the seal
Working Principle and Application of Self operated Regulating Valve
Working principle of self operated regulating valve:
The operation of a self operated regulating valve is based on a basic principle: to use the energy of the process fluid to adjust the position of the valve. These valves integrate a self regulating mechanism that can respond to fluctuations in process variables such as pressure, temperature, or flow rate. This type o
Common faults and troubleshooting methods of ball valves
Ball valve is a commonly used control valve in industrial pipelines, which has advantages such as simple structure, small flow resistance, and good sealing performance. However, during use, ball valves may also experience some common malfunctions, such as valve jamming, leakage, and leakage. Below, we will introduce common faults and troubleshooting methods for ball valves.
01. Valve
Due to some similarities in appearance between globe valves and gate valves, as well as their ability to cut off in pipelines, many circle members who do not have much contact with valves may confuse the two. In fact, if carefully observed, the difference between globe valves and gate valves is quite significant.
Firstly, in terms of valve structure, the gate valve can rely on m
Installation environment and maintenance precautions for butterfly valves
1. Installation environment
Installation environment: Butterfly valves can be used indoors or outdoors, but in corrosive media and areas prone to rusting, corresponding material combinations should be used. For special working conditions, consult Zhongzhi Valve.
Installation location: Installed in a location that is safe to operate and easy to maintain, inspect, and r
Teji valve sales elite team into the workshop, zero distance to feel the production line!
In order to improve the comprehensive business quality of the sales team of the Teji valve group, further consolidate the basic knowledge of the valve industry and improve the business ability, on April 2nd, the sales team of the special effect valve group went to the production workshop to visit and learn along the industrial process of valve production.Workshop technical personne
Manual valve is a valve operated by handle and handwheel. It is a common valve used in equipment
pipeline.Its handle, hand wheel rotation direction clockwise is closed, counterclockwise is open.However,
there are individual valves that open in the opposite way.Therefore, attention should be paid to check the
open and close mark before operation.。
The handwheel and handle on the
The outer surface of the valve should be painted out of the factory, the paint layer should be durable, beautiful rules, and ensure that the mark is clear.
1, valve products according to the body material to identify the paint, the color according to the table
Body material
Gray cast iron, malleable cast iron
Nodular cast iron
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2024/11/1Valve sealing surface grinding is a key step to ensure sealing performanceThe sealing performance of the valve directly affects the control effect of the fluid medium and the safe operation of the system, the grinding of the valve sealing surface is one of the important means to ensure its sealing performance, its main purpose is to eliminate the uneven sealing surface, defects and particles, improve the surface smoothness and roughness, so as to achiev
2024/10/25Valve sealing surface material selection factors to considerSealing surface is the most critical working face of the valve, the quality of the sealing surface directly affects the service life of the valve, and the material of the sealing surface is an important factor to ensure the quality of the sealing surface. Therefore, the following factors should be considered when selecting valve sealing surface materials: ① Corrosion resistance.
2024/10/10What are the precautions for manual operation of electric valvesThe electric actuator of valve is used to control the valve. If the valve cannot be opened and closed due to some factors, such as power failure, failure of the electric actuator, or is fixed in a certain position, it needs to be operated by hand wheel. So, what should we pay attention to when the valve actuator needs to be manually operated? Matters needing atte
2024/9/27Working principle of pressure valvePressure valve is a device used in hydraulic system to control and regulate liquid flow pressure. Its working principle is based on the balance between the liquid pressure on the spool and the spring force. When the pressure in the hydraulic system exceeds the pressure set by the seat, the seat will be subjected to upward force, so that the disc is separated from the seat, and th
2024/9/20Six reasons for valve sealing surface damageBecause the seal plays a role in cutting and connecting, adjusting and distributing, separating and mixing media on the valve channel, the sealing surface is often subjected to medium corrosion, erosion, wear and easily damaged. The reasons for the damage of sealing surface are man-made damage and natural damage. Artificial damage, is due to the design and manufacture not jing, m
2024/8/30Method of preventing the regulator from getting stuck or blocked frequently01, cleaning method The welding slag, rust, and residue in the pipeline cause blockage or jam in the throttle orifice, guide part, and balance hole of the lower valve cover, resulting in strain and scratch on the spool surface and guide surface, and indentation on the sealing surface. This often occurs in the initial phase of operation after a new system is put into operation and
2024/3/29Commonly used material heat treatment process of valve bodyValve body blank heat treatment process according to different materials are as follows: 1. Heat treatment of gray cast iron In order to achieve different purposes, gray cast iron can be subjected to different heat treatments after casting. In the production of valve, the heat treatment processes commonly used for gray cast iron valve body and other parts after casting are: the
2024/3/15Causes and treatment of internal leakage of natural gas ball valveCauses of ball valve internal leakage 1. Reasons for internal leakage of the valve during the construction period: ① Improper transportation and hoisting causes the overall damage of the valve, resulting in internal leakage of the valve; ② When leaving the factory, the hydraulic pressure is not dried and anti-corrosion treatment of the valve, resulting in corrosion of the seal
2023/8/25Working Principle and Application of Self operated Regulating ValveWorking principle of self operated regulating valve: The operation of a self operated regulating valve is based on a basic principle: to use the energy of the process fluid to adjust the position of the valve. These valves integrate a self regulating mechanism that can respond to fluctuations in process variables such as pressure, temperature, or flow rate. This type o
2023/8/4Common faults and troubleshooting methods of ball valvesBall valve is a commonly used control valve in industrial pipelines, which has advantages such as simple structure, small flow resistance, and good sealing performance. However, during use, ball valves may also experience some common malfunctions, such as valve jamming, leakage, and leakage. Below, we will introduce common faults and troubleshooting methods for ball valves. 01. Valve
2023/7/28Can globe and gate valves be mixed?Due to some similarities in appearance between globe valves and gate valves, as well as their ability to cut off in pipelines, many circle members who do not have much contact with valves may confuse the two. In fact, if carefully observed, the difference between globe valves and gate valves is quite significant. Firstly, in terms of valve structure, the gate valve can rely on m
2023/7/7Installation environment and maintenance precautions for butterfly valves1. Installation environment Installation environment: Butterfly valves can be used indoors or outdoors, but in corrosive media and areas prone to rusting, corresponding material combinations should be used. For special working conditions, consult Zhongzhi Valve. Installation location: Installed in a location that is safe to operate and easy to maintain, inspect, and r
2021/4/9Teji valve sales elite team into the workshop, zero distance to feel the production line!In order to improve the comprehensive business quality of the sales team of the Teji valve group, further consolidate the basic knowledge of the valve industry and improve the business ability, on April 2nd, the sales team of the special effect valve group went to the production workshop to visit and learn along the industrial process of valve production.Workshop technical personne
2021/1/29Operating method of manual valveManual valve is a valve operated by handle and handwheel. It is a common valve used in equipment pipeline.Its handle, hand wheel rotation direction clockwise is closed, counterclockwise is open.However, there are individual valves that open in the opposite way.Therefore, attention should be paid to check the open and close mark before operation.。 The handwheel and handle on the
2020/7/16How to identify valve identification paint?The outer surface of the valve should be painted out of the factory, the paint layer should be durable, beautiful rules, and ensure that the mark is clear. 1, valve products according to the body material to identify the paint, the color according to the table Body material Gray cast iron, malleable cast iron Nodular cast iron
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