Middleeast valve is the best  Lubricated plug valve suppliers in UAE. We supply to cities like Ajman, Khor Fakkan, AI Ain.  

Understanding Lubricated Plug Valves

A lubricated plug valve is a type of valve designed to control the flow of liquids or gases in a pipeline. It features a cylindrical or tapered plug with a through-hole that aligns with the flow path when the valve is open. The unique aspect of this valve is its use of a lubricant, which reduces friction between the plug and the valve body, ensuring smooth operation and a tight seal. Lubricated plug valves are widely used in applications where frequent operation and high-pressure handling are required, such as in the oil and gas industry, chemical processing, and water systems.

Construction and Components of a Lubricated Plug Valve

Lubricated plug valves are robustly built to handle demanding conditions. Their key components include:

1. Valve Body: Houses the internal components and connects to the pipeline.

2. Plug: The cylindrical or tapered element that rotates to control the flow. The plug’s outer surface is grooved to retain lubricant.

3. Sealant Injection System: Includes a sealant reservoir and injection fittings that supply lubricant to the grooves on the plug.

4. Stem: Connects the plug to the actuator or handle, enabling rotation.

5. Seats: Provide a seal between the plug and the valve body to prevent leakage.

6. Actuator or Handle: Used to manually or automatically rotate the plug.

Functionality and Operation of a Lubricated Plug Valve

o Opening and Closing:

o When the plug’s through-hole aligns with the flow path, the valve is open, allowing fluid to pass.

o Rotating the plug 90 degrees positions the solid part of the plug against the flow path, closing the valve.

o Lubrication:

o Lubricant is injected into the grooves on the plug’s surface, forming a film between the plug and the valve body.

o This reduces operational torque, minimizes wear, and ensures a tight seal.

o Sealing:

o The lubricant acts as a sealant, filling any gaps between the plug and the body to prevent leakage.

Key Features and Advantages of Lubricated Plug Valves

1. Low Operating Torque: The lubricant significantly reduces friction, making the valve easier to operate.

2. Tight Sealing: Lubricant fills micro-gaps, providing a bubble-tight seal for high-pressure applications.

3. Durability: Designed to withstand abrasive and corrosive media, ensuring long service life.

4. Versatility: Suitable for a wide range of fluids, including slurries, gases, and viscous liquids.

5. Maintenance-Friendly: The sealant injection system allows in-line lubrication, reducing downtime.

6. Pressure and Temperature Handling: Capable of operating in high-pressure and high-temperature environments.

7. Bidirectional Flow: Can handle flow in both directions without performance loss.

Parts of a Lubricated Plug Valve

1. Body: The outer casing that contains and protects internal components.

2. Plug: The rotating element responsible for controlling flow.

3. Stem: Facilitates the rotation of the plug through external actuation.

4. Sealant Injection System: Ensures continuous lubrication for smooth operation.

5. Seats: Provide a sealing interface between the plug and body.

6. Gaskets and Seals: Prevent external leakage.

7. Handle or Actuator: Enables manual or automated operation.

Suppliers in the UAE offer versatile Lubricated Plug Valve, crucial components for efficient fluid flow control in diverse industrial applications.

Description:

Available materials: F22, CF8, CF3, CF3M, Ductile iron, WCB, WCC, WC9, WC6, Alloy 20, SS304, SS316,CF8M, SS316L, SS904L

Class: 150 to 2500, PN10 to PN450

Size:1/2” – 24”

End: Flanged, Socket weld, Butt weld, Screwed.

Operation:-Pneumatic Actuator , Electric Actuator ,Lever operator ,Gear operator.

Visit us: https://www.middleeastvalve.com/product-category/lubricated-plug-valve/