Performance Features

1.     Seal reliable:  hard -soft dual-material seal ensures zero leakage of high-pressure gas and liquid media.

2.     Throttling and shut-off function: It has the advantages of multi-stage throttling and staged pressure reduction. This valve has the function of three throttle valves and can replace the pressure reducing valve under high pressure difference conditions. During the throttling process, most of the pressure is applied on the nozzle and labyrinth shaft, and a small part of the pressure is applied on the throttling openings of the valve cage. The high-speed fluid mainly flush the nozzle and labyrinth shaft, and the worn nozzle and labyrinth shaft do not affect the throttling and sealing performance.

3.     Automatic debris removal:The valve pug is equipped with a debris collection groove between the two O-rings. When the first O-ring is damaged, debris in the medium enters the collection groove, achieving automatic debris removal. This ensures that the outer surface of the valve plug and the inner wall of the valve cage remain clean at all times, preventing the second O-ring from being worn out and ensuring reliable sealing.

4.     Small vibration, low noise:The valve plug is fitted with a balance hole to ensure that the plug is always in force balance within the cage, which prevents the generation of mechanical noise. Multi-stage throttling and stepwise pressure reduction effectively prevent erosion caused by the cavitation of gas/liquid media, reduce the erosion of high-speed fluids on the internal components of the valve, and lower the noise, resulting in low vibration.

5.     The plug is equipped with a balancing hole which ensures valve plug is always in force balance within the cage. It requires less torque to operate, making it easy and flexible to open the valve.

6.     Each valve is shipped with the packing gland bushing pre-filled with grease, which can meet the valve's lifetime use. There is no need to add grease during any stage from installation, pressure testing to commissioning and use.

Technical Parameters

Structural Diagrams

Application Performance:

West-East Gas Pipeline Project;

PetroChina Tarim Oilfield Company Kela II Gas Field Project;
PetroChina Sangnajilike and Yingmailake Gas Field Projects;
Tarim Central 6 Condensate Gas Field Project;
Changqing Oilfield Company Changbei Gas Field Project;
Southwest Oil and Gas Field Company Luojiazhai Ultra-High Sulfur Gas Field Project; Qinghai Sebei Gas Field Project;
China National Offshore Oil Corporation (CNOOC) Dongfang 1-1 Onshore Terminal Project;
Bohai South Onshore Terminal Project;
Hainan Island Ring Pipeline Project; etc.