PQ640F/H pneumatic side mounted eccentric semi ball valve

The PQ640F/H pneumatic side mounted eccentric semi ball valve utilizes an eccentric valve body, eccentric ball body and valve seat. When the valve stem rotates, it automatically centers on a common trajectory. During the closing process, it becomes tighter and tighter, fully achieving good sealing performance.Valve body and seat are completely separated, eliminating the wear of the seal ring, overcoming the problem that the traditional ball seat and the ball sealing surface are always worn, non-metallic elastic materials are embedded in the metal seat, and the metal surface of the seat is well protected.This product is particularly suitable for media such as steel, aluminum, fiber, small solid particle, pulp, coal ash, petroleum gas etc.

Product features:

1. Its structure adopts the eccentric tightening principle through the transmission mechanism to achieve the purpose of brake tightening, adjustment and closure, the sealing pair is a metal surface ring with a hard surface contact seal, double eccentric structure in the opening of the valve spool is located in the ball room, the flow section is large, and the valve is not washed, the valve spool is not washed when closed, the valve spool ball is gradually along the valve seat when opened, effectively cutting the scale barrier,achieve reliable sealing. It is especially effective for two-phase mixed flow transportation where solid precipitates are easy to scale.
2. The hemisphere of the valve is bimetal, the base metal is surfacing with different alloys,the valve seat is also surfacing with special treatment,the sealing surface is combined into various types of anti-corrosion, wear-resistant, high-strength, etc., to meet the needs of different occasions.
3. Tightly sealed, delivering harmful gases with zero leakage.
4. The valve core of the sealing pair has a compensation amount left, and when the valve is worn out, it can be reliably sealed by turning a little more when closed, extending its service life. In addition, users can unscrew the compression nut, adjust or replace it, and the valve seat can still be used, avoiding the disadvantage of scrapping the entire valve after sealing failure. The selection of bimetallic sealing pairs with different alloys (or combination balls) for welding can be used for wear-resistant, corrosion-resistant, high-temperature resistant and strict sealing conditions.

Execution standards:
Design and manufacturing: GB/T12237-2007
Structural length: GB12221-2005
Supply requirements: GB/T12252-2005
Pressure test: GB/T13927-2008
Pressure testing and inspection: GB/T13927-1992

Main component materials of the product: