Universal globe valve

Short Description:

1. Simple structure, small volume, light weight and convenient maintenance.
2. Small fluid resistance, tight and reliable, good sealing performance.
3. Convenient operation, quick opening and closing, and remote control.


Product Detail

FAQ

Product Tags

DN: DN15-DN400
PN: PN1.0MPa/PN1.6MPa/PN2.5MPa/PN4.0MPa/PN6.3MPa/PN10MPa
Connection type: Flange, Butt welding
Operation: Hand wheel, bevel gear, Pneumatic, Electric
Body: WCB/A105、WC6、WC9、CF8、CF8M、CF3M、TA2、C4、904L
Medium: Water, gas, oil, Acid-base
Temperature: -29℃≤T≤200℃ (CF8、CF8M、CF3M、C4、904L、TA2)
-29℃≤T≤425℃ (WCB、A105) -29℃≤T≤575℃ (WC6、WC9)
Standard: GB/T12235-2007 JB/T3595
Face to face: GB/T12221 JB/T3595
Flange End: GB/T9113 JB/T79.1
Testing and inspection: GB/T13927

Globe valve, also known as shut-off valve, belongs to the forced sealing type 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 the lower part of the valve disc, the resistance to be overcome by the operating force is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force for closing the valve is greater than that for opening the valve, so the diameter of the valve stem should be larger, otherwise the valve stem will be bent. According to the connection mode, it can be divided into three types: flange connection, screw thread connection and welding connection. After the appearance of self sealing valve, the medium flow direction of the stop valve changes from the top of the valve disc into the valve chamber. Under the action of medium pressure, the force to close the valve is small, but the force to open the valve is large, and the diameter of the valve stem can be reduced accordingly. At the same time, under the action of medium, this type of valve is also more tight. China’s valve “three to” once stipulated that the flow direction of stop valve should be from top to bottom. When the stop valve is opened, when the opening height of the disc is 25% – 30% of the nominal diameter, the flow has reached the maximum, indicating that the valve has reached the full open position. Therefore, the full open position of the stop valve should be determined by the stroke of the disc


  • Previous:
  • Next:

  • Write your message here and send it to us