Electric eccentric hemispherical valve

Product details:

       The structure of the eccentric hemispherical valve adopts the principle of eccentricity-tightness to achieve the purpose of braking, adjusting and closing through the transmission mechanism. The sealing pair is a metal surface ring with a hard surface contact seal. When the double eccentric structure is opened, the valve core is located in the storage ball chamber, and the circulation is in circulation. The cross section is large, and the valve is not washed. When the valve core is closed, the valve core is not washed, and the spherical surface of the valve core is opened along the valve seat to effectively remove the scale obstacle and achieve a reliable seal. It is particularly effective for the mixed flow of two-phase mixed flow scaleable solids. The second feature is that the hemisphere of the valve is made of bimetal. The base metal is welded with different alloys. The valve seat is also specially treated for the corresponding surfacing. The sealing surface is combined into various types such as anti-corrosion, wear-resistance and high strength to meet different types. Occasionally, the third feature is strictly prohibited, and the harmful gas can be transported to zero leakage. The fourth feature is that the valve core of the sealing pair has a compensation amount. When the valve seat is worn (the seat hardness is lower than the valve core), when it is closed, If you turn it a little, it can still be reliably sealed and prolong the service life. In addition, the user can screw off the compression nut, and the valve seat can still be used after adjustment or replacement, which avoids the drawbacks of the current numerous valve seal failures.

    　Therefore, the choice of surfacing different alloy (or combination ball) bimetal sealing pairs can be used in different industrial sectors that are resistant to wear, corrosion, temperature and temperature, and require strict sealing.

The main purpose and product features of the ball valve:

1. General valve: Specification model PN1.0-4.0Mpa, DN40-1600. It is suitable for applications where sewage treatment, pulp, urban heating and heating are required.　　

2, oil chemical special valve: specifications DN40-1600, PN1.0-4.0Mpa for crude oil, heavy oil and other oil products, chemical industry weak corrosion, two-phase mixed flow medium. Temperature resistance up to 425 ° C.　　

3, gas special valve: specifications DN40-1600, PN1.0-4.0Mpa for gas, natural gas, liquefied gas delivery control. The product structure features sealed and welded different chromium-containing stainless steel, which is tightly sealed and corrosion resistant.　　

4. Special slurry valve: Specification DN40-1600, suitable for industrial pipeline transportation with liquid precipitation or fouling in liquid or solid two-phase mixed flow or liquid transport. Product structure characteristics According to customer demand medium and temperature requirements, the sealing sub-surfacing valve core is welded with chrome molybdenum vanadium alloy. The valve seat is made of chrome-molybdenum alloy, chrome alloy and stainless steel alloy welding rod to meet the needs of different slurry conveying.　　

 5, coal ash slag special valve: specifications DN40-1600, suitable for power plant, hydraulic slag removal or gas pipeline control. The product requires wear resistance. The valve core adopts a combination ball type bimetal, which has a relatively high rigidity and is very wear-resistant. The valve seat adopts the overall wear-resistance No. 1 or full surfacing, and has the advantages of a hard-sealed ball valve. 
 
Ball valve product features:
1, large circulation area, small flow resistance. This is because after opening, the spool is located in the ball chamber and the fluid is straight.

2, the operating torque is small, turn 90 degrees to open and close, the operation is light.

3, the seal is tight, double eccentric metal hard seal. Fouling does not affect opening and closing, which is the most significant advantage of hemispherical valves.

4, long service life, seal wear-resistant, and there is compensation, the valve seat can be adjusted or replaced.

Parts materials and working conditions:

Main performance parameters:

Shape and connection size