Detailed Product Description

   Eccentric Semi-ball Valve

  Double eccentric semi-ball valve body using eccentric, eccentric ball and valve seats, valve stem for rotating movement automatic centering in the common trajectory, the more related the closure of the process of tightening its full purpose to achieve a good seal. Ball valve and valve seat completely out to remove the seals wear, to overcome the traditional ball valve seat sealing surface and the ball is always the problem of wear and tear, non-metallic elastic material is embedded in the metal seat, the seat the metal surface is well protected . This product is especially suitable for steel, aluminum, fiber, small solid particles, paper pulp, coal ash, liquefied petroleum gas, such as media

 Features
1, its structure using the principle of eccentric tight Lease through the transmission gates to achieve tight regulation, the purpose of the closure, sealing, vice is of hard metal surface contact with sealing ring, double eccentric structure in open possession of the ball when the valve core is located indoors, the flow of large cross-section , and the valve will not be washed, the closure will not be washed spool, spool turned on progressive spherical valve seat along to effectively remove barriers to scaling, to achieve a reliable seal. It is easy to scale the two-phase flow of solid precipitation particularly effective delivery of Francis
2, the hemispherical valve with bi-metallic, the surfacing materials of different alloys, also for the corresponding valve seat with a special treatment of surfacing, sealing surface to form anti-corrosion, wear resistance, high strength of various types to meet different occasions demand
3, sealed tight, transmission of harmful gases leaking up to zero
4, sealing the valve core, deputy left the amount of compensation, when the valves do wear after turning a little when closed, he can be a reliable seal to extend service life. In addition, users will be pressed out nut screw, adjust or replace the valve seat can be used later to prevent the valve seal, the whole end-of-life of the drawbacks of

Different because of welding alloy (or a combination of the ball) Two-metal seal can be used in matching pairs wear resistance, corrosion resistance, high temperature seals and demanding 

 Working conditions
1, General Valve: Model specifications DN40-1600. Apply to sewage treatment, paper pulp, urban heating supply places stringent requirements
2, oil-chemical-specific valves: Specification DN40-1600. Applicable to crude oil, heavy oil such as oil, chemical industry corrosion weak, two-phase flow medium
3, the gas valve exclusive: Specification DN40-1600. Apply to gas, natural gas, liquefied petroleum gas transmission control
4, a dedicated slurry valves: Specification DN40-1600. Applicable to liquid, solid or liquid two-phase flow transport of chemical reactions or crystallization fouling industrial pipeline
5, Valves dedicated coal ash: Specification DN40-1600. Applicable to power plants, water or gas pipelines deslagging control

The implementation of standards
Design: GB12237-89
Flange connections: GB/T17241.6-1998, GB/T9115 (steel)
Structure length: GB12221-89