American Standard, forged steel ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipeline, the strength and safety, resistance to harsh environments and so in the design were special consideration, applicable to various corrosive and non corrosive media. Compared with the steel ball valve, work force of fluid pressure before the valve resulting in the ball on the all pass to the bearing, will not make the ball move to the seat and the seat will not bear high pressure, so fixed valve torque is small, the valve seat deformation small sealing performance stability, long service life, suitable for high pressure, large diameter occasions. Advanced spring pre - seat assembly, with a self - tightening, achieve the upstream seal. Each valve has two seats, each direction can be sealed, and thus the installation does not flow restrictions, is a two-way. The valve has two and three block type two body structure, flange bolt connection, and sealed with PTFE inserting into the stainless steel circle, rear wheel no seat close to the spring ball to ensure and maintain seal. There are no PTFE bearings on the upper and lower stems, reduce friction, operation effort, the small shaft at the bottom of the film, to ensure the ball and sealing ring position. Full size: valve flow aperture consistent with the pipeline diameter, for pipeline cleaning.

American standard forged steel ball valve features:

A: easy operation: sphere by the upper and lower bearing support, reducing friction, eliminating the due to the inlet pressure to promote a sphere with the great seal seal seat load caused by too much torque.  


B: reliable sealing performance: PTFE sheet material sealing ring is embedded in the stainless steel seat, metal seat end equipped with spring guarantee seal enough pre-tightening force, valve sealing surface wear during operation, in the spring under the action of the valve to ensure good sealing performance.  


C: fire prevention structure: to prevent because of heat or fire, make ptfe sealing ring burned, larger leakage occurs, and feeds the fire, set up fire prevention sealing ring between the sphere and valve seat, burned down in sealing ring, in under the action of spring force, the seat ring is rapidly to the sphere, form the metal to metal seal, have a certain degree of sealing effect.Fire test APl6FA and APl607 standard requirements.  


D: automatic relief function: when the valve is the stagnation of midplane medium abnormal pressure rise more than spring pre-tightening force, the seat back out of the sphere to achieve the effect of pressure relief automatically, automatic reset after unloading seat.  


E: the discharge line: body are set up and down drain away, L can check whether the valve seat leakage, at work, when the valve is in full open or close, removing the midplane pressure, can directly replace the packing;Can discharge midplane retentate, reduce the pollution of the medium of the valve.Auxiliary seal set system (customer need please kindly tell)