The stunning Paker globe valve structure that shakes the market*

Paker globe valveThe opening and closing component is a plug shaped valve disc, with a flat or conical sealing surface, and the valve disc moves in a straight line along the centerline of the valve seat. The movement form of the valve stem also includes the lifting and rotating rod type. A Paker globe valve refers to a valve in which the closing element (valve disc) moves along the centerline of the valve seat. According to the movement of the valve disc, the change in the valve seat opening is directly proportional to the stroke of the valve disc.

Due to the relatively short opening or closing stroke of the valve stem of the Paker globe valve and its highly reliable shut-off function, as well as the proportional relationship between the change in the valve seat opening and the stroke of the valve disc, it is very suitable for regulating flow. Therefore, this type of valve is very suitable for cutting off, regulating, and throttling purposes.Paker globe valveIt belongs to a forced sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force between the valve stem and the packing, as well as the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the diameter of the valve stem should be larger, otherwise the valve stem bending fault may occur.

In recent years, with the emergence of self sealing valves, the flow of medium in Paker globe valves has changed from above the valve disc into the valve chamber. At this time, under the pressure of the medium, the force to close the valve is small, while the force to open the valve is large, and the diameter of the valve stem can be correspondingly reduced. Meanwhile, under the influence of the medium, this type of valve is also relatively tight. The "Three Modernizations" of valves in our country once stipulated that the flow direction of Paker globe valves should be from top to bottom. This valve should be installed horizontally,Paker globe valveThe opening and closing component is a plug shaped valve disc, with a flat or conical sealing surface, and the valve disc moves in a straight line along the centerline of the fluid. The movement form of the valve stem includes a lifting rod type (the valve stem is lifted and lowered without the handwheel lifting), as well as a lifting rotating rod type (the handwheel rotates and lifts together with the valve stem, and the nut is set on the valve body). Globe valves are only suitable for fully open and fully closed, and are not allowed to be adjusted or throttled.

The Paker globe valve adopts a double acting cylinder, which uses upper chamber intake or lower chamber intake to remotely control the valve, making it easy and flexible to operate. Cylinder media: compressed air, nitrogen. Simple structure, easy manufacturing and maintenance; Small work schedule and short opening and closing time; The sealing surface between the closing body (valve disc) and the valve seat adopts conical sealing, which has low closing force, erosion resistance, and reliable sealing. The valve seat can be a replaceable valve seat, which can be freely combined with the sealing surface material of the closing element to meet the working conditions and extend the service life.Paker globe valveCarefully selected materials, in compliance with relevant domestic and international standards, with a reasonable structure and beautiful appearance. The sealing surface of the Paker globe valve disc and seat is made of iron-based alloy cobalt based hard alloy welding, which has good wear resistance, high temperature resistance, corrosion resistance, abrasion resistance, and long service life. The valve stem of the Paker globe valve has undergone quenching and surface nitriding treatment, and has good corrosion resistance and abrasion resistance. It can adopt various piping flange standards and flange sealing surface types to meet various engineering needs and user requirements.