Lift-Type Hard-Seated Plug Valves in the Oil and Gas Industry

The oil and gas industry involve various stage, each demanding strict requirements for valve equipment. To ensure stable system operation and safety, comprehensive consideration must be made when select valve. These include pressure, temperature, medium characteristic, and safety standard. Lift-type hard-seated plug valves offer significant application advantage due to their unique design structure and outstanding performance, particularly within the oil and gas field.

I. Application Advantages in Upstream Exploration and Production
Upstream operations primarily involve the exploration and extraction of oil and gas resource. Valves must handle high-pressure, high-temperature, and highly corrosive fluid, such as acidic gases containing H₂S. This necessitates high-strength, heavy-duty valve construct from wear-resistant and corrosion-resistant material like Inconel or 316 stainless steel.

In this phase, traditional valve is easy to erosion and wear, and require maintenance and replacement. This not only affect work efficiency, but also unsafe. Lift-type hard-seated plug valves are not only corrosion resistant, but also wear resistant. It works like this - when opening, first rotate the wheel to lift the plug, the sealing surface is detached, then rotate the handle 90° to align the passage; To close, rotate the handle 90° to align the passage vertically, then turn the wheel to lower the plug and compress the seal. This make the valve operates with the sealing surfaces disengaged, preventing wear on the sealing surfaces. This design deliver outstanding erosion resistance, extended service life, and reduce maintenance frequency, greatly improving upstream operation safety and efficiency.

II. Application Advantages in Midstream Transportation and Storage
The midstream sector handles oil and gas transportation and storage primarily via pipeline, tanker, or storage tank. Pipeline system must withstand high-pressure, long-distance transport while preventing internal scaling or corrosion. Valves must also meet specialized requirements for different oil and gas product: - Liquefied Natural Gas (LNG), stored and transported at -162°C, requires valve that prevent material cracking. - Liquefied Petroleum Gas (LPG), primarily containing propane and butane, demands high sealing integrity. - Oil sands and heavy oil, extracted using specialized techniques like steam-assisted gravity drainage, involve highly viscous media with high impurity content.

Lift-type hard-seated plug valve are suitable for various condition with nominal pressures ranging from CLASS 150LB to 2500LB and operating temperatures from -29°C to 550°C, meeting the varied demands of midstream pipeline transport and cryogenic storage. Their double-flow design facilitate installation and use, while the rational sealing structure effectively prevent internal scaling and leakage. For LNG low-temperature application, cryogenic-resistant materials prevent embrittlement, while heavy oil transportation benefit from enhanced wear-resistant designs. Its flexibility accommodates diverse transportation and storage requirement, ensuring pipeline safety and stability.

III. Application Advantages in Downstream Refining and Sales
The downstream process primarily handles crude oil refining, petrochemical processing, and fuel sales. Crude oil types are vast, ranging from light low-sulfur to heavy high-sulfur varietie with wide viscosity range. Refined petroleum products are mainly used for transportation, industrial processes, and residential heating. Valves in this segment must withstand high temperature, pressure, and highly corrosive environment, including exposure to chemicals like sulfuric and hydrochloric acid. This demands extremely precise control over valve flow and pressure.

Lift-type hard-seal plug valves open and close precisely by coordinating the handwheel and handle operation, meeting these demand. For unconventional oil and gas resources, valves must also withstand erosion from high-velocity fluids containing solid particles. The plug valve can resist well meet this requirement, enable them to endure erosion from fast-moving fluid laden with solid particle.

ZZJG Valve provides the above information on lift-type hard-seated plug valves. If you want to know more about lift-type hard-seated plug valves, please contact us via WhatsApp or email.