Inverted Pressure Balance Lubricated Plug Valve

1. Design and manufacture stadnard: API599/API 6D
2. Face to face: ASME B16.10
3. Flange ends standard: ASME B16.5
4. Inspection and test standard: API598, API6D

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Description

Bolt cover, plug 90 degree around

Main structural features

Bolt cover, structure of flip -chip balanceable pressure and light on/off operation. An oil groove is set between valve body and seal surface, which may infuse the seal grease to increase the seal capability.

Inverted Pressure Balance Lubricated Plug Valve FAQs

1. What is an inverted pressure balance lubricated plug valve?

An inverted pressure balance lubricated plug valve is a high‑performance plug valve with an inverted plug design and forced lubrication system. It is engineered for reliable on/off and throttling service in high‑pressure and high‑temperature industrial pipelines.

2. What are the main advantages of an inverted pressure balance lubricated plug valve?

Its main advantages include low operating torque, pressure‑balanced plug design, reduced wear, long service life, excellent sealing performance, and suitability for critical service. These properties make it widely used in oil & gas, chemical, petrochemical, and high‑pressure industrial systems.

3. What industries typically use inverted pressure balance lubricated plug valves?

These valves are commonly used in upstream oil & gas, gas stations, chemical processing, fertilizer plants, power stations, and other industries where high‑pressure, high‑temperature, or abrasive media require reliable shut‑off and long‑term stability.

4. What is the difference between a lubricated plug valve and a non‑lubricated plug valve?

A lubricated plug valve uses a continuous or forced lubrication system to reduce friction and protect the sealing surfaces, which helps maintain low torque and long service life. A non‑lubricated type typically relies on soft or elastomeric seals and may be used in lower‑pressure or less demanding applications.

5. How does the pressure balance design work in an inverted plug valve?

The pressure balance design uses internal passages and balance holes in the plug to equalize pressure between the plug and upper/lower valve chambers. This greatly reduces operating torque and prevents the plug from locking under high line pressure, improving reliability and safety.

6. Do you provide valves for the Oil & Gas industry?

Yes, our valves are widely used in Oil & Gas, Petrochemical, and LNG systems globally.

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