Chlorine-specific valves are designed for chlorine(dry chlorine) and all types of high-risk medium. Besides its packing, it has bellows seal. Which has a double seal structure and can effectively prevent dangerous medium from leaking. Valve and valve seat adopt polytetrafluoroethylene and stellite hard alloy that are strong corrosion resistant, which have advantages of stable sealing performance, safe and reliable to use,strong corrosion resistance, no medium leakage, simple operation, and so on.
The main advantages of chlorine-specific valves:
1. The hydroforming bellows seal forms the first sealing, which is the key part of the chlorine-specific globe valve bellows seal. The lower end and the stem are connected by automatic rolling welding, as well as the upper and the connection plate. They form a metal barrier between the fluid medium and atmosphere in order to ensure no leakage of the valves.
2. The multi-stage polytetrafluoroethylene packing combination in the packing box forms the second sealing, which improves the sealing performance. The double sealing design(bellows seal+ packing) If the bellows seal fails, the stem packing will avoid leakage, which meets the international sealing standard.
3. The upper sealing device uses PTFE sealing material to form a combination of sealings to ensure that there is no leakage in the packing box within the service life of the valves. That can eliminate the poor sealing performance of packing box of regular valves and easy leakage of mediums, which may even cause accident.
4. The flange of chlorine-specific valves adopt tongue and groove sealing structure, which can ensure reliable sealing of the flange even in the case of pipe pressure fluctuation.
5. The sealing structure has cone, flat type and automatic sealing compensation performance, which has features of double insurance effect, stable sealing performance, no adhesive wear and a long service life.
6. The valve flap has a tapered design. The sealing surface and medium have a streamline shape, which has a better sealing performance and longer service life.
7. Valve bonnet comes with a oil connector, which can directly lubricate the stem, nut and axle sleeve, unlike the traditional way of only lubricating on the thread.
8. Hand wheel ergonomic design has the advantages of longer service life, easy and convenient operation, more safety and stability.
Characteristics of chlorine-specific valves:
a.Be aimed at the disadvantages of poor corrosion resistance, easy to perforation on the shell. Chlorine-specific valves adopt corrosion-resistant steel (carbon steel with corrosion-resistant alloy elements) according to the specific characteristics of the medium, which is chlorine and liquid chlorine resistant, can be used under the temperature of minus 40 degree. All of that ensures the requirement of its working condition.
b.The sealing structure of chlorine-specific valves has spherical, flat type and automatic sealing compensation performance, which has double insurance effect, stable sealing performance, no adhesive wear. By this way, we can effectively solve the problems of poor sealing performance and easy to leak for the regular valves which are used in chemical pipelines.
c.The flange of chlorine-specific
valves adopt tongue and groove sealing structure,which can ensure reliable sealing of the flange even in the case of pressure fluctuation of pipe.
d.The upper sealing device uses PTFE sealing material to form a combination of sealings to ensure that there is no leakage in the packing box within the service life of the valves. That can eliminate the poor sealing performance of packing box of regular valves and easy leakage of mediums, which may even cause accident.
The specification of chlorine-specific valves
Formulating the enterprise standards based on GB/T12235 standard. The choosing of materials and structural design are based on the corrosion features and working conditions for chlorine and liquid chlorine. And each technical parameter is better than the national standard.
Guidelines for the use of chlorine-specific valves
1. Must ensure cleanness of the fluid and gas so as to prevent clogging the solenoid valve or cylinder piston.
2. The coil of the solenoid valve has high heat when working. Please do not touch it.
3. When the coil of the solenoid valve is energized, it is forbidden to remove it in order to prevent electric shock.
4. Forbid to hit solenoid valve coil, socket, and connecting parts to avoid damage.
5. Forbid to cover the energized the coil of solenoid valve in order to prevent over heat damage.
6. The actual power supply voltage of the solenoid valve can not exceed the tolerance range.
7. Working pressure, working temperature and viscosity of the medium should not exceed the specified range.
