Non-Lubricated Sleeved Plug Valve

Non-lubricated sleeved plug valves use a polymer sleeve between the plug and body to provide sealing without routine injection of valve lubricant. African Valve supplies sleeved plug valve configurations for process and pipeline applications where clean operation, reduced maintenance and dependable isolation are required.

Key Features

• Sleeved Plug: Polymer sleeve provides the primary sealing interface.

• Non-Lubricated Operation: Does not require routine sealant injection.

• Low Maintenance: Eliminates regular lubrication of plug sealing surfaces.

• Cavity-Free Construction: Suitable cavity-free designs can reduce product accumulation around the plug.

• Quarter-Turn Operation: Provides rapid opening and closing.

• Flow Isolation: Suitable for selected bi-directional isolation applications.

Technical Specifications

Materials & Components

• Body: ASTM A216 WCB / ASTM A351 CF8M

• Plug: Carbon Steel / Stainless Steel

• Stem: ASTM A182 F304 / F316

• Sleeve: PTFE / RPTFE / Engineered Polymer

• Seat / Sealing Element: PTFE / RPTFE

• Packing: PTFE / Flexible Graphite

• Gaskets: Graphite / PTFE

• Bolting: ASTM A193 B7 / B8M

Applications in Algeria

These valves are suitable for natural-gas processing, petrochemical plants, chemical facilities, water treatment and hydrocarbon transfer systems, particularly where lubricant-free operation and reduced product contamination are important.

Standards

Applicable requirements may include API 599, ASME B16.34, ASME B16.5, ASME B16.10 and API 598. Sleeve material should be verified against the process medium and operating temperature.