Non lubricated sleeved plug valve

Valvesonly Europe is one of the largest Non Lubricated Sleeved Plug Valve Manufacturer and suppliers in Germany and Italy. A non lubricated sleeved plug valve is a type of valve designed to control the flow of fluids in pipelines without the need for external lubrication. Unlike traditional plug valves that rely on lubricants to reduce friction and wear, the non-lubricated variant utilizes innovative materials and design principles to achieve smooth operation and extended service life.

What is a Sleeved Plug Valve?

At the heart of a sleeved plug valve lies its distinguishing feature: the sleeve. This sleeve, typically made of durable elastomeric material such as rubber or PTFE (Polytetrafluoroethylene), encapsulates the plug or rotor within the valve body. The sleeve acts as a barrier between the flowing fluid and the valve components, ensuring tight sealing and minimal friction.

What Does a Lubricated Plug Valve Do?

In contrast to non-lubricated variants, lubricated plug valves require the application of lubricants to facilitate smooth movement of the plug within the valve body. While effective in reducing friction and wear initially, lubricated plug valves may suffer from drawbacks such as contamination of the fluid stream with lubricants, maintenance challenges, and environmental concerns.

How Does a Sleeve Valve Work?

The operation of a sleeved plug valve is relatively straightforward yet highly efficient. When in the closed position, the sleeve fully encases the plug, forming a tight seal that prevents fluid from passing through the valve. As the valve is actuated to the open position, the plug retracts partially or fully, allowing the fluid to flow through the annular space between the plug and the sleeve. By controlling the degree of plug retraction, the flow rate can be precisely regulated, offering excellent throttling capabilities.

Features of Non-Lubricated Sleeved Plug Valve:

  • Self-Lubricating Design: The elastomeric sleeve inherently reduces friction between the plug and the valve body, eliminating the need for external lubrication.
  • Corrosion Resistance: Non-metallic sleeves offer superior resistance to corrosion, making them suitable for handling aggressive fluids and harsh operating environments.
  • Bi-Directional Sealing: The flexible nature of the sleeve enables bi-directional sealing, ensuring leak-tight operation regardless of flow direction.

Non Lubricated Sleeved Plug Valve Manufacturer and suppliers in Germany and Italy stands out as a testament to innovation and engineering prowess. Combining advanced design with meticulous craftsmanship, this valve serves a crucial role in various industrial applications.


Material: Carbon Steel, Iron, Duplex Steel, CF8, CF8M, WCB, CF3, CF3M, WC6, Ductile iron, WCC, LCB, LCC, SS304, SS316, Alloy 20

Class: 150 to 2500.

Pressure: PN10 to PN450.

Nominal Size: ½” to 24”

Ends: Flanged, Threaded, Socket weld, Buttweld

Operations – Gear operated, Electric actuated , Pneumatic actuated, Lever operated

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  • Non-Lubricated Sleeved Plug Valve

    Non-Lubricated Sleeved Plug Valve Body: WCB, CF8, CF8M, CF3, CF3M, LCB, WC6 Bonnet: WCB, CF8, CF8M, CF3, CF3M, LCB, WC6 Plug: A105+ENP, SS304, SS304L, SS316, SS316L Seat: PTFE, PPL Seat Ring: PTFE, PPL Packing: Graphite, PTFE, PPL Gasket: SS304+Graphite Nominal Size: DN15 to DN350 Nominal Pressure: Class150 to Class900, PN16 to PN63 Flanged Ends to […]