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Professional Explosion Proof Solenoid Valve Manufacturer

●Long operating life. 

●Long-term operation systems. 

●Reduced power consumption. 


●High-operating frequency. 

●Flameproof enclosure. 

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    BCST your Expert Explosion-proof Solenoid Valve Supplier in China

    The BCST explosion-proof-solenoid-valve has a housing that can contain any explosion from inside the coil or housing and prevent any internal spark from igniting any combustible gas, vapor, or particulate matter in the environment, causing a much larger explosion. The so-called explosion-proof means that the current energy conversion caused by the electromagnetic headlock is not enough to ignite the corresponding ambient gas. BCST explosion-proof solenoid valves are rugged, robust, and designed to serve various demanding markets, including turbine manufacturing, chemical process, electric and gas utilities, industrial gasses, cryogenic transfer, and oil refining. Additionally, ATEX certified valves are available for safe installation in hazardous areas in various materials.

    BCST your One-Stop Explosion-proof Solenoid Valve Solution in China

    All parts of the explosive gas mixture or equipment are enclosed within the explosion-proof solenoid valve. The shell can withstand any joint surface or structural void and the explosive mixture that enters the shell will explode inside without being damaged. In addition, it will not cause the ignition of an explosive external environment formed by one or more gases or vapors. All parts that can cause sparks, arcs, and hazardous temperatures are housed in the flame-retardant enclosure. The fireproof casing makes the internal space of the equipment separate from the surrounding environment. Due to the breathing effect and gas penetration effect of electrical equipment, explosive gas mixtures may be present inside.

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    Explosion-proof Solenoid Valve

    high pressure explosion-proof solenoid valve

    High Pressure Explosion-proof Solenoid Valve

    ss explosion-proof solenoid valve

    SS Explosion-proof Solenoid Valve

    BCST your BEST Supplier for Explosion-Proof Solenoid Valve

    BCST is a registered global brand, substantially concentrated in flow fluid control and measurement solution. BCST has enough raw materials in stock and professional technical staff that can quickly realize your unique requirements. The range of our products includes low-cost cast models for easy installation to high-end units capable of withstanding both high temperatures and high pressures. 

    We can provide you with the tools you need to revolutionize your business processes and get more done. Contact us and let’s work together. Reach out to one of our experienced engineering teams today, and we’ll find custom-tailored solutions that meet your needs. Feel free to let us know about any special requirements your business has and we’ll work on coming up with custom solutions for you.

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    Why Purchase Explosion-proof Solenoid Valve From BCST

    Explosion-proof Solenoid Valve -FAQ

    What are the considerations for the selection of explosion-proof solenoid valves?

    Explosion proof Solenoid valve

    1. Applicability

    The fluid in the pipeline must be the same as the medium specified in the selected solenoid valve series.

    The temperature of the fluid must be less than the calibration temperature of the selected solenoid valve.

    The solenoid valve allows the fluid’s viscosity to be below 20CST; greater than 20CST should be specified.

    If working differential pressure, the highest differential pressure in the pipeline in less than 0.04MPA should be selected when the direct-acting and step-by-step direct-acting types.

    When the minimum working pressure difference is greater than 0.04MPA, the pilot-operated (differential pressure) solenoid valve can be used.

    The maximum operating differential pressure should be less than the maximum calibration pressure of the solenoid valve.

    Available solenoid valves are one-way work, so pay attention to whether there is a back pressure difference. If there is, we need to install a non-return valve.

    Fluid cleanliness is not high when we should be installed in front of the solenoid valve filter.

    We need to pay attention to the flow orifice and receiver diameter.

    Solenoid valves generally only have two controls on and off. If the pieces allow, please install a bypass tube to facilitate maintenance.

    If there is a water hammer phenomenon, they should adjust the solenoid valve’s opening and closing time.

    We need to pay attention to the impact of ambient temperature on the solenoid valve.

    You should select power supply current and power consumption according to the output capacity, and the supply voltage is generally allowed ± 10% or so. Attention must be paid to the higher VA value when AC starts.

    2. Reliability

    The solenoid valve is divided into two kinds, usually closed and normally open. Generally, we will choose the normally closed type, which opens when the power is on and closes when the power is off. However, if the opening time is very long and the closing time is very short, we have to choose the normally open type.

    If the action time is very short when the frequency is high, we generally choose the direct-acting explosion-proof solenoid valve. However, for large diameters, we need to select the fast series.

    3. Safety

    In general, explosion-proof solenoid valves are not waterproof. When conditions do not allow it, please choose the waterproof type. The factory can customize it according to requirements.

    The solenoid valve’s maximum nominal pressure must exceed the pipeline’s maximum pressure. Otherwise, the service life will be shortened or other unexpected situations.

    We should use the full stainless steel type when corrosive fluids are present.

    In explosive environments, we must use the appropriate explosion-proof products.

    4. Economy

    Many explosion-proof solenoid valves can be used, but you should select the above three points based on the most economical products.

    It is one of the criteria for selection, but it must be economically based on safety, suitability, and reliability.

    The economy is not only the selling price of the product; we must prioritize its function and quality, as well as the cost of installation, maintenance, and other accessories required.

    An explosion-proof solenoid valve in the entire automatic control system and the production line accounted for a minimal cost. But if you want to be the cheap and wrong choice, then the damage caused is enormous.

    What are the features of an explosion-proof solenoid valve?

    1. It is very safe to use as the external leakage is blocked, and the internal leakage is easily controlled.

    Internal and external leaks are a safety hazard. Other self-control valves usually extend the valve stem by electric, pneumatic, and hydraulic actuators to control the rotation or movement of the spool. It all has to solve the problem of external leakage of the dynamic seal of the valve stem for long-term action. The only solenoid valve uses electromagnetic force acting on the spool sealed in the electric control valve isolated magnetic casing to complete. Unfortunately, there is no dynamic seal, so the external leakage is easy to plug off.

    Electric valve torque control is not easy. Easy to produce internal leakage and even pull off the head of the valve stem. The solenoid valve structure type easily controls the internal leakage until it is reduced to zero. Therefore, the solenoid valve is safe to use, especially for corrosive, toxic, or high and low-temperature media.

    2. It is a simple system that can be connected to a computer, but the price is low.

    Solenoid valves are simple and inexpensive.It is easier to install and maintain than other actuators, such as control valves. More remarkable is that it is a much simpler and less expensive automatic control system.

    As the explosion-proof solenoid valve is a switch signal control, it is very easy to connect with the industrial control computer. Moreover, in today’s computer popularity, the price has dropped significantly in the era, and the advantages of the solenoid valve are more prominent.

    3. It has an express action, tiny power, and a delicate appearance.

    Explosion-proof solenoid valve response time can be as short as a few milliseconds, even if it can control the pilot solenoid valve within a few dozen milliseconds. It is more responsive than other self-control valves due to its self-contained circuit. Properly designed solenoid valve coil power consumption is very low and is an energy-saving product. It can also only trigger action, automatically maintaining the valve position, usually with no power consumption. Explosion-proof solenoid valve shape size is small, both space-saving but also light and beautiful.

    4. It is limited by the adjustment accuracy; the suitable medium is limited.

    Solenoid valves usually only have two states of switching. The spool can only be in two limited positions and can not be continuously adjusted, so the adjustment accuracy is also subject to certain restrictions.

    The solenoid valve requires a high degree of cleanliness of the medium.It cannot apply it to media containing particles, such as impurities, which it must filter out first. In addition, it is unsuitable for sticky mediums. Moreover, the viscosity range of the medium to which the specific product applies is relatively narrow.

    5. It has a wide variety of models and a wide range of uses.

    Although the solenoid valve has inherent shortcomings, the advantages are still very prominent, so it is designed into various products. It can meet multiple needs, and it is incredibly versatile. Advances in solenoid valve technology have also been centered on how to overcome the. Therefore, the progress of solenoid valve technology has also revolved around overcoming inherent weaknesses and making the best use of inherent advantages.

    What are the installation precautions for the explosion-proof solenoid valve?

    1. In the installation, we should pay attention that the arrow’s valve body should be consistent with the direction of media flow. It should not install an explosion-proof solenoid valve in places with direct dripping or splashing water. You should install the solenoid valve vertically upwards.
    2. Explosion-proof solenoid valve should ensure that the power supply voltage is within 15%-10% fluctuation of the rated voltage to work usually.
    3. After installation of the solenoid valve, there shall be no reverse pressure difference in the pipeline. We need to energize it several times to make it a suitable temperature before you can officially use it.
    4. In the explosion-proof solenoid valve installation, we should thoroughly clean the pipeline. The medium into which the pipeline should be free of impurities. Suppose there are impurities. We need to install a filter in front of the solenoid valve.
    5. When the solenoid valve fails or cleaning, we should install a bypass device to ensure that the systemcontinues to run.

    How to troubleshoot the explosion-proof solenoid valve?

    1.Solenoid valves do not work when energized

    Check whether the power supply wiring is bad → if bad, you need to re-wire and connector connection

    Check whether the power supply voltage is in the ± working range -→ if not, then need to adjust to the normal position range

    Check if the coil is desoldered → if it is, it needs to be re-soldered

    Check if the coil is short-circuited → if short-circuited, the coil needs to be replaced

    Check if the working pressure difference is not appropriate → if not, adjust the pressure difference or replace the solenoid valve with the appropriate one

    Check if the fluid temperature is too high → if it is too high, replace the solenoid valve with a suitable one

    Check if the solenoid valve’s main spool and moving core are stuck due to impurities → if this is the case, cleaning is required. If there is seal damage, we will need to replace the seal and install a filter

    The viscosity of the liquid is too large, the frequency is too high, and the life has arrived → if so, then you need to replace the product

    2. Solenoid valve can not be closed

    Check whether it is because the seal of the main spool or the iron-operated spool has been damaged → if this is the case, the seal needs to be replaced

    Check whether the fluid temperature and viscosity are too high → if so, you need to replace the solenoid valve counterpart

    Check if impurities have entered the solenoid valve spool or moving iron core → if so, cleaning is required

    Spring life has reached or deformed → if so, we need to replace the new spring

    Throttle hole balance hole blockage → so needs to be cleaned in time

    The frequency of operation is too high, or the life of the valve has reached → if so, it is necessary to change or update the product

    3. Other conditions

    Internal leakage → check if the seal is damaged or the spring is poorly fitted.

    External leakage → check if the connection is loose or the seal is broken → if so, tighten the screw or replace the seal.

    Noise when energized → If this is the case, loosen and tighten the solid parts on the head. We need to adjust the voltage if the voltage fluctuation is not within the permissible range. If the core suction surface is impure or uneven, we need to clean or replace it in time.。

    What are the uses of explosion-proof solenoid valves?

    Explosion-proof solenoid valves are suitable for on/off control of liquid and gas pipelines and are two DO controls. Therefore, we can generally use it for the control of small pipelines.

    1. Switching form.

    A coil drives the solenoid valve. It can only switch on or off, and the action time is short when switching.

    2. Nature of work.

    Solenoid valve general circulation coefficient is very small, and the working pressure difference is very small. For example, the available DN25 caliber solenoid valve circulation coefficient is much smaller than the DN15 caliber electric ball valve. Solenoid valve drive is through the solenoid coil, more easily damaged by voltage shock. It is equivalent to the role of the switch, which is to open and close the two positions.

    You can generally reset solenoid valves after a power failure. If you want such a function, you need to add a reset device to the solenoid valve.

    3. Applicable processes.

    An explosion-proof solenoid valve is suitable for special process requirements, such as leakage, fluid medium special, etc. It is more expensive.


    BCST’s explosion-proof solenoid valves are trusted by customers at home and abroad for their advanced structure, reliable performance, exquisite appearance, reasonable price, and excellent service. The products have been exported to the United States, Canada, France, Britain, Germany, Italy, Australia, Russia, the Middle East, Taiwan, and other countries and regions. Our sales points are all over the country.

    Our factory has excellent mechanical processing and testing equipment, an advanced production process, a perfect testing system, high-quality staff, and an advanced quality management system.

    BCST explosion-proof solenoid valves are widely used in various fields such as machinery, light textile, environmental protection, petrochemical, metallurgy, medicine, food, scientific research, and military industry. Our engineers can also provide you with unique specifications, new product design and development, manufacturing, and technical consultation services.

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