Technical Specifications
| Size Range NPS1/2"-32" / DN15-800mm | Main Material Carbon steel,Stainless Steel,Aluminum Bronze,Duplex steel etc. (Other materials are available under request.) |
| Temperature Rating -29 ~ +80°C | Stem material Stainless steel |
| Pressure Rating I.0Mpa ~ 42.0Mpa 150LB ~ 2500LB | leakage level Metal Seat: Class D~E |
| Plug Material Carbon Steel,Stainless steel,Duplex steel etc. | Flange Drilling ASME B16.5,EN1092,GOST 33259,BS etc. |
| Seat Material Metal Seat:Same to Body,STL etc. | Port Type Reduce Port,Full Port |
| Design Standard API599,API 6D,ASME B16.34 | Test Standard API 598,EN12266-1,ISO 5208 |
| Face to Face API 16.10,EN558-1 | Operation Lever, Worm Gear, Electric, Pneumatic etc |
| Application Oil and Gas Pipeline, blow-downs to atmosphere Compressors & Pumps Isolations, Water/Slurry/Gas Injection system isolation |
| Other The carefully selected materials and contemporary design make our plug valve highly recognized. If our Plug Valve cannot meet your choice, we can provide you with special made. |
Chief Features
The valve has reasonable structure, reliable sealing, excellent performance and beautiful appearance.
Inverted pressure balance structure, light switch action.
There is an oil groove between the valve body and the sealing surface, which can inject grease into the valve seat at any time through the nozzle to increase the sealing performance.
Key Benefits
Simplified Maintenance with One-Piece Plug
The one-piece plug construction means fewer parts to inspect and replace, lowering the maintenance burden compared to multi-piece plug designs.
Flexible Bore Options for Different Flow Needs
Available in full bore for minimal pressure drop on high-flow lines, or reduced bore where a lower-cost option is acceptable — see how this compares to other plug valve types if you're still deciding on the right configuration.
Rated for Demanding High-Pressure Service
With a pressure rating of 150LB–2500LB (1.0–42.0Mpa), this valve is built for high-pressure applications.
FAQs
Q1: What is an inverted pressure balance lubricated plug valve used for?
It's designed for oil and gas pipeline isolation, blow-downs to atmosphere, compressor and pump isolation, and water/slurry/gas injection system isolation.
Q2: How does the pressure balance design reduce operating torque compared to a standard lubricated plug valve?
The inverted plug design combined with the pressure balance system keeps the opening/closing force low even under high line pressure, resulting in lighter, easier switch action.
Q3: What does the blowout-proof stem protect against?
It keeps the stem retained within the valve body even under internal pressure, which protects personnel and prevents an uncontrolled release if the packing were to fail.
Q4: Should I choose full bore or reduced bore?
Full bore minimizes pressure drop and is typically preferred for high-flow lines; reduced bore is a lower-cost option where some flow restriction is acceptable for the application.
Q5: What if the standard configuration doesn't fit our application?
Special-made configurations are available if the standard size, material, or pressure rating doesn't meet your specific requirements — check the full range of lubricated plug valve options to compare configurations.
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