Anti-Taper Locking Design
The inverted (flip-chip) pressure balance structure automatically balances the pressure between the plug and the valve body, effectively preventing the plug from getting stuck even under high-pressure fluctuations.
Engineered for the toughest Oil & Gas environments. Inverted pressure balance lubricated plug valve factory PANS provides high-performance sealing, low operating torque, and zero-leakage solutions. 24-Hour Quote Response & 20-Day Rapid Delivery.
Advanced engineering to ensure zero downtime in high-pressure oil and gas applications.
The inverted (flip-chip) pressure balance structure automatically balances the pressure between the plug and the valve body, effectively preventing the plug from getting stuck even under high-pressure fluctuations.
Our balanced design reduces operating torque by 40–60% compared to conventional plug valves, allowing for easier manual operation or smaller, more cost-effective actuators.
Features a specialized oil groove system between the body and seal surface. The seal grease can be infused via the refueling nozzle to enhance sealing capability and provide emergency shut-off security.
Equipped with a Bolt Cover for quick on-site inspection and maintenance without removing the entire valve from the pipeline, saving downtime and reducing service costs significantly.
| Parameter | Specification | Details / Options |
|---|---|---|
| Design Standard | API 6D / API 599 | ASME B16.34, BS 5351 |
| Face-to-Face | ASME B16.10 | Short / Regular / Long pattern |
| Flange Standard | ASME B16.5 / B16.47 | ANSI / DIN / JIS available |
| Pressure Class | 150# – 900# | Class 150, 300, 600, 900 |
| Size Range | 1″ – 24″ (DN25–DN600) | Larger sizes on request |
| Body Material | WCB / LCB / CF8 / CF8M | Duplex, Alloy Steel available |
| Plug Material | WCB / SS304 / SS316 | Hard-faced options available |
| Seal Material | PTFE / Grease | High-temp options available |
| Temperature Range | -46°C to +350°C | Cryogenic options available |
| Leak Test Standard | API 598 / API 6D | Shell, Seat, Backseat tests |
| End Connection | Flanged / BW / SW | Butt weld, Socket weld |
| Operation | Handwheel / Wrench / Actuator | Electric, Pneumatic, Hydraulic |
| Certification | API 6D, CE, ISO 9001 | Third-party inspection available |
✦ If you're evaluating different plug valve designs, this guide explains how lubricated plug valves work and how to select the right model for your application.
Tell us your application requirements. Our engineers provide technical drawings and detailed quotations within 24 hours. No MOQ required.




Every valve undergoes hydrostatic and air testing — Shell, Seal, and Backseat — per API 598 / API 6D standards before leaving the factory. Zero exceptions.
We provide Material Test Certificates (MTC) per EN10204 3.1 for every order. Each valve is permanently marked with a heat number, enabling full material traceability.
With 5 manufacturing bases and annual output exceeding 3,000 tons, PANS easily fulfills large-scale EPC project requirements.
Proven performance across the world's most demanding industrial environments.

Long-distance pipelines and gathering systems where sustained zero-leakage performance and low-torque operation are critical to safety and operational efficiency.

Ideal for handling slurry, viscous media, and abrasive fluids. The lubrication system ensures reliable sealing even with the most challenging process media.

Reliable performance in corrosive environments and high-pressure cycles. Anti-taper lock design ensures operability after long periods of pressurized service.

Deployed in main steam and water systems where tight shutoff and long service life under thermal cycling conditions are paramount.
Professional support for international EPC bidding and project qualification. Dedicated inventory stocking solutions for global distributors and procurement teams.
Explore our technical guides to make informed valve selection decisions for your project.
Get a Factory Quote in 24 Hours. Our engineers provide drawings and quotes within 24 hours. No MOQ for industrial valves.
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