PBQ double eccentric hemispherical valve its structure eccentric principle to achieve through the drive mechanism of the brake, regulating, closing the purpose of the seal is a metal surface with hard-surface contact seal, double-eccentric structure in the open when the spool is located in the possession of the ball room, Flow cross-section, and the valve is not washed, when the valve is not closed when flushing, open when the valve core progressive along the valve seat, effectively remove the scaling obstacles, to achieve reliable sealing, it is easy to scale two-phase flow scaling solid precipitation Mixed flow delivery is particularly effective. The second feature of the valve hemisphere with bimetallic, base metal surfacing on different alloys, the valve seat is also the corresponding surfacing by special treatment, the sealing surface into anti-corrosion, wear-resistant, high strength and other types to meet different Occasion requirements, the third feature is strictly prohibited sealing, transportation of harmful gases up to zero leakage, the fourth feature is the seal of the valve spool left compensation, when the valve seat wear (seat hardness lower than the spool), when closed In addition, the user can tighten the compression nut, adjust or replace the valve seat can still be used, to avoid the current failure of many valve seal failure of the entire drawbacks. Therefore, welding different alloys (or composite ball) bimetal sealing pair matching can be used for wear-resistant, corrosion-resistant, high temperature and also require strict sealing of different industrial sectors. Main purposes: 1. Universal valve: Specifications Model PN1.0-4.0Mpa, DN40-1200. Suitable for sewage treatment, pulp, urban heating and other demanding applications. 2. Petrochemical special valve: DN40-1200, PN1.0-4.0Mpa for crude oil, heavy oil and other oil products, weak corrosive chemical industry, two-phase mixed flow media. Temperature up to 425 ℃. 3. Gas valve: Specifications DN40-1200, PN1.0-4.0Mpa for gas, natural gas, liquefied gas transport control. The product structure is characterized by sealing different welding of chromium-containing stainless steel, tight seal, anti-corrosion. 4. Slurry valve: DN40-1200, suitable for liquid, solid two-phase mixed flow or liquid transport chemical reaction crystallization or scaling of industrial pipelines. Product Structure Features According to customer demand medium, the temperature requirements are different, the seal overlay spool valve is made of chromium molybdenum vanadium alloy surfacing, the valve seat is made of chrome molybdenum vanadium alloy, chrome alloy, stainless steel alloy electrode surfacing to meet the needs of different slurry conveying. 5. Pulverized coal ash dedicated valve: Size DN40-1200, suitable for power plants, hydraulic slag or gas pipeline control. Product requirements wear resistance, the spool with a combination of ball bimetal, has a very high stiffness and very wear-resistant, seat with the overall wear on the 1st or the entire surfacing, and has a hard seal ball valve features. Features: 1. Circulation area, small flow resistance. This is because the spool is located in the possession room after opening, fluid through. 2. Operating torque is small, turn 90 degrees to open and close the completion of the operation light. 3 tight seal, double eccentric metal seal. Fouling does not affect the opening and closing, which is the most significant advantage of the hemisphere valve. 4. Long service life, seal wear, and a compensation amount, seat can be adjusted or replaced.
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