Paker globe valveIt 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 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, this type of valve is very suitable for regulating flow. Therefore, Paker globe valves are highly suitable for use as cut-off or regulating valves, as well as throttling.

Paker globe valves are used in natural gas, petrochemicals, offshore oil platforms, chemical engineering, power industry, and more. Parker, as one of the most important instrument valve manufacturers in the United States, has a history of more than 40 years. Parker designs, manufactures, and tests strictly according to standards. Parker valves in the United States undergo helium gas testing at 11 times the rated working pressure to detect valve leaks, which is higher than other peers.Paker globe valveObtained certifications from multiple departments including GL, LR, DNV, and ABS in Germany. The opening and closing component of the Paker globe valve is a plug shaped valve disc, with a flat or conical sealing surface. The valve disc moves linearly 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 is 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 valve six 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 will bend due to failure. In recent years, with the emergence of self sealing valves,Paker globe valveThe flow direction of the medium is changed to enter the valve chamber from above the valve disc. 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 globe valves should be from top to bottom. When the Parker globe valve is opened, the opening height of the valve disc is 25% of the nominal diameter. The materials of the Parker globe valve/American Parker globe valve body include cast iron, cast steel, stainless steel, forged steel, chromium molybdenum steel, and chromium molybdenum vanadium steel.

When the Paker globe valve is opened and the opening height of the valve disc is 25% to 30% of the nominal diameter, the flow rate has reached its maximum, indicating that the valve has reached the fully open position. soPaker globe valveThe fully open position should be determined by the stroke of the valve disc. The work pressure ranges from 1.6-32MPA for American standards from 150LB-2500LB, and from 10K-64K for Japanese standards. Working temperature -20 ℃ -550 ° C. Valve diameter ranges from DN15 to DN300. Connection method: flange, threaded or welded. Paker globe valve drive modes: manual, electric, pneumatic, bevel gear, spur gear rotation, suitable media: water, oil, gas, steam, etc. The Paker globe valve has a simple structure and is easy to manufacture and maintain.