Leading Plug Valve Manufacturer in China
- A plug valve controls the flow of fluid by rotating an internal cone or cylindrical plug body.
- The plug body has a through hole, which can be turned 90 degrees to achieve quick opening and closing.
- Plug valve has the characteristics of compact structure, flexible operation, and good sealing, and is suitable for cutting off, diverting, or regulating flow in medium and low pressure pipelines. It is commonly used in corrosive or high-viscosity medium pipelines in petroleum, chemical, water treatment, and other industries.
- ISO 9001 quality control system | CE certification | SGS material report, supporting global shipping, customs clearance, and customized packaging!
Application of SJI Plug Valve
Plug valves are mainly used in the following industries:
- Petrochemical industry
- Power and Energy
- Water Treatment
- Food and Medicine
- Paper and Industrial manufacturing

Specifications of SJI Plug Valve
Nominal diameter: DN50 – DN600
Nominal pressure: PN10, PN16
Working tempreture: -20℃ – 120℃
Actuator: manual, pneumatic, and electric


Features of SJI Plug Valve
Plug valve features:
- Plug valves offer minimal flow resistance to media, particularly in straight-through type.
- Simple structure, light weight, small size, convenient and rapid operation. Turn the plug 90° to open or close.
- Due to the rapid closure, it is possible to produce a “water hammer” phenomenon.
- Rotating the plug requires significant effort.
- It can be installed horizontally or vertically.
Plug Valve
- Material Sheet
| ITEM | PART NAME | MATERIAL |
| 1 | BODY | DUCTILE IRON, WCB, CF8, CF8M |
| 2 | COVER | DUCTILE IRON, WCB, CF8, CF8M |
| 3 | PLUG | F304, F316, F321, F304L, F316 |
| 4 | SLEEVE | PTFE |
| 5 | GASKET | PTFE, GRAPHITE + STAINLESS STEEL |
What are the advantages of a plug valve?
Opens and closes quickly, with low fluid resistance, and excellent sealing performance.
What is the difference between a plug valve and a ball valve?
The ball valve process is complex. The cost of a ball valve is higher than plug valve.
Is a plug valve a shut-off valve?
Yes, a plug valve is a shut-off valve.







