How to choose explosion proof valves? What is the function of an explosion proof valve

You should choose a regular manufacturer, and the cloud petrochemical platform is very good.

Shanghai Huquan electric valve manufacturers for you: Clarify the use of the valve in the equipment or device, determine the working conditions of the valve: applicable medium, working pressure, working temperature, etc.

Determine the nominal diameter and connection method of the pipe connected to the valve: flange, thread, welding, etc. Determine how to operate the valve:

Manual, electric, electromagnetic, pneumatic or hydraulic, electrically linked or electro-hydraulic, etc. According to the medium conveyed by the pipeline, the working pressure and the working temperature, the materials of the shell and internal parts of the selected valve are determined: gray cast iron, malleable cast iron, ductile iron, carbon steel, alloy steel, stainless acid resistant steel, copper alloy, etc.

Select the type of valve: closed circuit valve, regulating valve, safety valve, etc. Determine the type of valve:

Gate valves, globe valves, ball valves, butterfly valves, throttle valves, safety valves, pressure reducing valves, steam traps, etc. Determine the parameters of the valve: For automatic valves, first determine the allowable flow resistance, discharge capacity, back pressure, etc., and then determine the nominal diameter of the pipeline and the diameter of the seat hole.

Determine the geometric parameters of the selected valve: structural length, flange connection form and size, the size of the valve height direction after opening and closing, the size and number of bolt holes connected, the size of the whole valve appearance, etc.

Summary. Hello, I am happy to answer for you, the following is the answer to your query, I hope it will be helpful to you The explosion-proof and non-explosion-proof of pneumatic valves mainly refer to their ability to be used in a dangerous environment. Here is the difference between explosion-proof and non-explosion-proof pneumatic valves:

Explosion-proof pneumatic valves: Explosion-proof pneumatic valves are valves specially designed for use in the most hazardous environments. They feature special designs and materials to ensure safe operation in environments where combustible gases, vapors, or dusts may be present.

Explosion-proof pneumatic valves usually have the following characteristics: Explosion-proof structure: Explosion-proof pneumatic valves are specially designed with a structure to prevent sparks or high temperatures.

Explosion-proof materials: Explosion-proof pneumatic valves use high-temperature, corrosion-resistant materials to ensure long-term use in harsh environments. Explosion-proof approval:

Explosion-proof pneumatic valves are usually tested and certified by the relevant certification bodies to ensure that they comply with the relevant safety standards and regulations.

Dear Hello, I'm glad to answer for you, the following is the answer to the Zhengying for your query, I hope it will help you The explosion-proof and non-explosion-proof of pneumatic valves mainly refer to their ability to be used in ** dangerous environments. The following is the difference between explosion-proof and non-explosion-proof pneumatic valves: Explosion-proof pneumatic valves:

Explosion-proof pneumatic valves are valves specifically designed for use in hazardous environments. They are designed and made of special materials to ensure safe operation in environments where combustible gases, vapours or dusts may be present. Explosion-proof pneumatic valves usually have the following characteristics:

Explosion-proof structure: The explosion-proof pneumatic valve adopts a special structural design to prevent sparks or high temperature from causing explosion. Explosion-proof materials:

Explosion-proof pneumatic valves use high-temperature, corrosion-resistant materials to ensure long-term use in harsh environments. Explosion-proof certification: Explosion-proof pneumatic valves usually need to be tested and certified by the relevant certification bodies to ensure that they comply with the relevant safety standards and regulations.

Non-explosion-proof pneumatic valves: Non-explosion-proof pneumatic valves are valves that are generally used in non-hazardous environments. They are generally not equipped with ridge-proof rockburst structures and explosion-proof materials, so they are not suitable for use in environments where combustible gases, vapors or dusts may be present.

In short, the difference between explosion-proof pneumatic valves and non-explosion-proof pneumatic valves lies in their applicable environment and safety performance. In hazardous environments, it is essential to use certified explosion-proof pneumatic valves to ensure safe and reliable operation.

Hello, there is a certain difference between pneumatic valves in terms of explosion-proof and non-explosion-proof. Explosion-proof valves are designed for use in hazardous environments, and they prevent sparks from entering the valve or igniting combustibles and cherry seeds. Here are some of the features of explosion-proof valves:

1.Spark Resistant Design: Explosion-proof valves are usually designed with special materials and structures to reduce or avoid frictional sparks.

For example, the actuators and contact parts of a valve may be made of explosion-proof materials to ensure that they do not cause sparks during operation. 2.Flame retardant properties:

Explosion-proof valves may have the properties of flame retardant materials so that even in the event of a fire, they can effectively suppress the spread of fire. 3.Sealing performance:

Explosion-proof valves require good sealing properties to prevent flammable gases or liquids from leaking into the surrounding environment, thereby reducing the risk of **. 4.Accreditation Standards:

Explosion-proof valves often need to comply with specific certification standards and regulations, such as ATEX (Europe) or NEC (USA), to ensure their safe performance in the most hazardous environments. In contrast, non-explosion-proof valves may not have the above characteristics and therefore cannot be used in potentially hazardous environments. It should be noted that the selection of explosion-proof valves should be carried out according to the actual use environment and requirements to ensure that the valves can be transported safely and reliably.

Explosion-proof valves are mainly used in the hydraulic system of equipment without mechanical locking systems, such as large mechanical stages, lifts, lifts, automobile inspection and maintenance girders, etc., which mainly play a protective role to prevent the occurrence of safety accidents. It is a locking measure for the hydraulic system.

The main function of the hydraulic explosion-proof valve is: in order to prevent the sudden rupture of the oil pipe and the uncontrollable descent accident, and at the same time prevent the leakage of hydraulic oil in the pipeline, it is generally installed at the oil outlet or the oil port of the oil cylinder.

The explosion-proof valve is actually a kind of waterproof and breathable valve, but the explosion-proof vent valve is a strengthened for the electric vehicle battery, which is a waterproof and dustproof and breathable waterproof and breathable valve, and can also avoid the accumulation of gas caused by the chemicals inside the battery, resulting in excessive pressure difference.

There are many places in the battery explosion-proof valve, but the current battery is generally used Puwei waterproof explosion-proof vent valve, which is a kind of waterproof and dustproof and breathable, which can avoid the pressure generation. We know that batteries contain a lot of chemicals, which can cause a lot of gas and liquid mixtures to be generated during charging and discharging, and with it, pressure build-up. If these pressures are not equalized or released in time, a mild shell will deform and leak, and a more severe one will occur**.

The battery pack adopts a fully enclosed assembly process, and the application of Puwei waterproof explosion-proof breathable valve can make the battery pack drive safely in deep water. At the same time, it can quickly breathe and relieve pressure and explosion-proof, and solve the problem of self-explosion of new energy automobile batteries. Puwei waterproof explosion-proof vent valve also has the following functions:

1. Waterproof, dustproof, oil-proof, protection level up to IP68. 2. Chemical resistance, high and low temperature resistance, anti-aging, etc., to improve the reliability of the product in harsh environments. 3. Prevent condensation and fogging, and improve the service life of the product.

4. Micro-heat dissipation and balance pressure difference. Improve product integrity.

The explosion-proof valve uses the imported expanded polytetrafluoroethylene (E-PTFE) microporous membrane as the main waterproof and breathable material, the micropore diameter of the imported E-PTFE membrane is between, while the average diameter of air molecules is only, the average water vapor is average, and the diameter of the drizzle is about 500 m, that is, the pore size of the EPTFE membrane is more than 1000 times larger than the diameter of the gas, which is one thousandth of the water droplet. In addition, due to the low surface energy of the E-PTFE membrane, small water droplets will quickly form large water droplets on the surface of the E-PTFE membrane under the action of surface tension (water molecules pulling each other). Therefore, the gas can pass through smoothly, while the liquid water cannot pass through, so it has good waterproof and breathable performance.

Yes. The purpose of explosion-proof safety valves is to prevent explosions.

Explosion-proof has two meanings: one is to prevent the occurrence of **; The second is to reduce the loss of the first time.

The explosion-proof safety valve refers to a wide range, and its explosion-proof can refer to the following aspects:

When it is possible, turn it on to eliminate the source and prevent it from happening. For example, the valve that fills the ammunition depot with water when it catches fire;

When the pressure reaches a certain value, the pressure is automatically relieved to prevent the pressure from being too high**. Such as boiler safety valves;

It will not produce high heat or electric sparks during operation, and will not ignite combustibles in the environment. For example, explosion-proof control valves on natural gas pipelines;