Ball for occasions titanium plate

Typically, two-position adjustment, strict sealing performance, mud , wear , necking channel , opening and closing action quickly ( 1/ 4 turn open and close ) , high-pressure cutoff (large pressure ) , low noise, there is the phenomenon of cavitation and gasification , a small amount of leakage into the atmosphere , a small operating torque , fluid resistance of the piping system, the recommended valve . As the ball is usually rubber, nylon and PTFE plastic strap seals material as the seat , so its use is limited by the valve seat ring material . As of action is to rely on the metal ball in the role of the media sphere , pressing each other between the plastic seat to complete ( floating ball valve ) . Valve seat ring at a certain contact pressure, elastic-plastic deformation occurred in some areas . This distortion can be compensated for manufacturing precision and surface roughness of the sphere , to ensure the valve pull tight straps performance . Also, because the ball valve seat ring is usually made ​​of plastic , it is in the choice of the structure and properties of ball , taking the ball of fire and plastic security seal , especially in the petroleum, chemical, metallurgy and other sectors , flammable, explosive media the types of equipment used in the system and the pipe valve, should pay attention to fire and fire . Ball also applies to the lightweight construction , low cut ( pressure difference ) , piping systems corrosive medium. In the low temperature ( cryogenic ) equipment and piping systems can also be used ball . In the metallurgical industry, oxygen pipeline system , use to skim over the ball rigorous process .
When the oil pipeline and gas pipeline to be laid in the main line in the ground , use a full-bore welded ball valve .
Require adjustment during the performance , the need to use special structures ball with V -shaped opening . In the petroleum , petrochemical, chemical, power, urban construction, the operating temperature above 200 ℃ piping systems can use metal -to-metal sealing ball valve .