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Correct selection and precautions for Pressure Relief Valve
The Pressure Relief Valve is a water pressure control valve. It consists of a main valve and its attached conduit, pilot valve, needle valve, ball valve and pressure gauge. When using a Pressure Relief Valve, you must first pay attention to its selection. Improper selection may cause water blockage and air leakage. When selecting a Pressure Relief Valve, the drainage volume of the Pressure R
Basic structure and form of Pressure Relief Valve
There are roughly two types of Pressure Relief Valve: one is a switch-shaped valve that isolates the atmosphere and vacuum space after closing, and the other is a Universal Valve that adjusts the ventilation volume. The latter is used in equipment such as gas introduction. Generally speaking, a Pressure Relief Valve refers to a gas line valve. The basic function of a valve is to truly isolate the atmosphere
Structural features of Pressure Relief Valve
1. Leave a position for the valve handle to rotate. 2. Cannot be used as throttling. 3. Universal Valve with transmission mechanisms should be installed upright. The working principle of the Pressure Relief Valve is to unblock or block the valve by rotating the valve. The Universal Valve has a light switch, small size, can be made into a large diameter, reliable sealing,
Applicable occasions and application conditions of Pressure Relief Valve
Since the movement of the valve plate of the Pressure Relief Valve is wiping, most Pressure Relief Valve can be used for media with suspended solid particles. Depending on the strength of the seal, they can also be used for powdery and granular media. The Pressure Relief Valve has a small structural length and overall height, fast opening and closing speed, small
How Pressure Relief Valve work and are stored
The Pressure Relief Valve is composed of an electric actuator and a Universal Valve, so it has the advantages of the Universal Valve being easy to operate and simple in structure. It is also widely used in chemical, pharmaceutical and other industries. And with the assistance of electric actuators, the development of Universal Valve has reached a new level. The working
Application of Pressure Relief Valve in textile production
In textile production, the drying method of sizing machines is to use drying cylinder heating. Its working principle is that the wet sizing yarn is in direct contact with the surface of the high-temperature metal drying cylinder. The surface of the drying cylinder obtains heat and transfers it to the surface of the sizing yarn, so that the moisture contained in the sizing yarn is continuously vaporized, the moisture regain rate of the sizing yarn is continuously reduced, and the surface of the sizing yarn is gradually formed. Serosa. A layer of condensed water formed on the inner surface
Pressure Relief Valve installation instructions
1. Control the pressure difference adjustment method: adjust the pressure regulating valve stem counterclockwise and observe the pressure difference; 2. The flow direction of the Pressure Relief Valve medium should be consistent with the direction of the arrow on the valve body; 3. A filter should be installed on the water supply pipe in front of the pressure pipe to prevent the valve
Solution to Steam Trap pressure problem
The cross-pressure problem of Steam Trap is not a common phenomenon, but it is also a possible failure problem. As users, we still need to have a good understanding of it and master the ability to analyze and solve its causes: Due to the rupture of the pipe network in the pipe section behind the Universal Valve, the valve at P1 is closed or repaired, and when the water pump in pump s
1. When the pneumatic actuator is connected to the circuit and system air source, air enters cylinder A (cylinder B) through pipe A or B to push the piston to move to one end, thereby driving the rotating shaft and ball core to rotate 90°. 2. The top of the pneumatic actuator is linked to the visual indicator. When the green sign points to the word "open", it indicates that the Steam Trap is open.
Common Steam Trap failures and how to deal with them
The main cause of Steam Trap failure is improper design, manufacturing, selection or use. If these faults are not eliminated in time, they will affect the efficiency and life of the valve, and may even fail to provide safety protection. Common faults and solutions are as follows: (1) Leakage. Under the normal operating pressure of the equipment, leakage exceeding the allowable level occurs between t
Steam Trap failure and troubleshooting methods
The failure of the Steam Trap will directly affect the action of the switching valve and the regulating valve. Common failures include the Steam Trap not operating, which should be checked from the following aspects: (1) If the connection head of the Steam Trap is loose or the thread ends fall off, the Steam Trap valve must not be powered, and the thread ends can be tightened. (2) If the Steam Trap coil
Analysis of operating torque of Needle Valve
When the opening of the Needle Valve is above 10%, the axial force of the Needle Valve, that is, the operating torque of the Needle Valve does not change much. When the opening of the Needle Valve is less than 10%, the pressure difference between the front and rear of the Needle Valve increases due to the throttling of the fluid. This pressure difference acts on the gate plate, so that the valve stem requires a larger axial force to drive the gate plate, so within this range, the operating torque of the Needle Valve changes relatively large. The operating torque required for a Needle Val
The importance of Needle Valve in pipelines
According to the structure, Needle Valve can be divided into three types: lift Needle Valve, swing Needle Valve and butterfly Needle Valve. Lift Needle Valve can be divided into two types: vertical Needle Valve and horizontal Needle Valve. Swing Needle Valve are divided into three types: single-disc Needle Valve, double-disc Needle Valve and multi-disc Needle Valve. Butterfly Needle Valve are straight-through Needle Valve. The connection forms of the above Needle Valve can be divided into three types: threaded Needle Valve, flange connected Needle Valve and welded Needle Valve. The Needl
Working principle and structural characteristics of Needle Valve
Working principle of Needle Valve: The eccentric rotary regulating valve is a straight-through valve body structure with novel structure and low fluid resistance. The rotation center of the valve core is not concentric with the rotation axis, which can reduce the wear of the Universal Valve and extend the service life; after the valve core The bottom is equipped with a deflector wing, which is conducive to the stable flow of fluid and has excellent stability. At the same time, it also has the advantages of large flow rate and wide adjustable range, which is especially suitable for the co
A brief introduction to the characteristics of Needle Valve
1. Small diameter Needle Valve bodies are all precision castings High-tech precision casting technology and equipment enable stainless steel castings to obtain a dense organizational structure. There are no casting defects such as "pores, looseness, and sand inclusions" at all. The appearance is neat and beautiful. The leakage rate index of the valve body is better than 10-10Pa.M3/S. Fully suitable for ultra-high vacuum working conditions.
Comparison of the functional advantages and disadvantages of Plug Valve
1. Determine the valve type based on comprehensive economic effects There are several types of applicable valves that meet the above functional requirements. At this time, a certain valve type should be determined based on the economic effects. To this end, we believe that at least the following issues should be considered: 1) High reliability ①Simpl
Selection of Plug Valve structure type
1) Adjustment function ① The valve is required to operate smoothly; ② The small opening has good adjustment performance; ③ Select the required flow characteristics; ④ Meet the adjustable ratio; ⑤ Small resistance and large flow ratio (the ratio of the rated flow parameter of the valve to the nominal diameter); ⑥Adjust the speed. 2) Leakage amount and cut-off pressure dif
How to extend the life of Plug Valve
1. Increase the opening and extend the service life When starting to use the Plug Valve, try to work at a wide opening, such as 80%. In this way, the erosion, wear and other damage caused by the initial impurities in the pipeline occurs in places other than the damaged part of the valve core. After the impurities in the pipeline are removed, the opening of the Universal Valve is adjusted to a slightly larger normal opening. , as the fluid damages the valve core and the flow rate increases, the arc polishing machine correspondingly reduces the opening, which continues to destroy an
Improvement of Plug Valve seal
1. Current status and analysis of Plug Valve sealing Cast stone Plug Valve is an ideal opening and closing device in ash and slag pipelines. The quality and service life of the seal directly affect the quality and service life of the valve. In the past, the O-shaped rubber seal structure was used, that is, an O-shaped sealing ring was placed in the annular groove machined on the shaft, and then assembled into the hole machined on the sleeve parts to form a seal between the shaft and the hole. This kind of The sealing performance of the structure depends on the interference amount
How to test and install pipeline fully welded Ball Valve
Fully welded Ball Valve for pipelines should undergo a pressure test before installation to ensure the tightness and safety of the valve itself. 1. Fully welded Ball Valve test (1) Strength test: The strength test uses water as the medium; high-pressure caps are welded on the sleeves on both sides of the valve. After opening the valve to the 45°C position, inject wa
How to protect Ball Valve from freezing
If you select and install a suitable Ball Valve, as long as steam passes through it, there will be no freezing problem. But if the steam is cut off, the steam condensate will form a vacuum in the heat exchanger or accompanying pipe. This prevents condensation from draining freely from the system before freezing occurs. Therefore, install a vacuum breaker between the equipment being discharged and the Ball Valve. If gravity discharge is not used from the Ball Valve to the return pipe, the Ball Valve and discharge line should be manually discharged or automatically discharged using a disch
Factors that should be paid attention to when selecting Ball Valve
The selection of Ball Valve should first follow the four principles of safety, reliability, applicability, and economy, and secondly, based on the six aspects of on-site working conditions. 1. Choose according to the length of continuous working time: normally closed, normally open, or continuously powered on ①If the opening time is short or the opening and closing time is not l
How Ball Valve drive industrial transformation
As a new type of valve in recent years, Ball Valve have defeated some domestic valves in the fiercely competitive domestic market by virtue of some of their unique structural characteristics and quickly seized market opportunities. However, with the development of industry in the past two years, especially in 2016, my country has paid special attention to the transformation of traditional industrialization. So at this time, can the manufacturers of forged steel high-pressure Ball Valve, as traditional valves, drive the transformation of the industry?
The development direction of Ball Valve
Intelligence and standardization. The intelligence and standardization of Ball Valve have been put on the agenda. Intelligentization mainly uses Universal Valve positioner. Intelligence is manifested in the following aspects: ① Intelligent functions such as self-diagnosis of Ball Valve and remote communication of operating status make the management of Ball Valve convenient and fault diagn
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