Middleeast valve is the largest Gate valve suppliers in UAE. Gate valves are widely used in various industries for controlling the flow of liquids and gases. Known for their simplicity and reliability, they are designed to provide a tight seal when fully closed and minimal flow resistance when fully open.
Working of a Gate Valve
The operation of a gate valve is straightforward and effective:
o Opening the Valve
o The gate (a flat or wedge-shaped barrier) is raised from its seat by turning the valve's handwheel or actuator.
o This creates an unobstructed flow path, allowing the fluid or gas to pass through.
o Closing the Valve
o The gate is lowered into the seat, effectively blocking the flow.
o A precise fit ensures a leak-proof seal, even under high pressure.
o Intermediate Positions
o Gate valves are not typically used for throttling or flow regulation as partially open gates can cause turbulence and wear.
Key Features of Gate Valves
o Full Bore Design- provides minimal flow resistance and allows for maximum flow efficiency when fully open.
o Tight Seal-Ensures a reliable shut-off to prevent leakage.
o Durability-Designed to withstand high pressures and temperatures with robust materials like stainless steel, cast iron, and bronze.
o Bidirectional Flow- Allows fluid to flow in either direction, adding flexibility to system design.
Gate Valve Operation
Gate valves operate manually or automatically:
o Manual Operation
o A handwheel or lever is turned to raise or lower the gate.
o Best suited for applications where precise control is not critical.
o Automated Operation
o Actuators, such as electric, pneumatic, or hydraulic systems, are used to control the gate.
o Ideal for remote or high-frequency operations.
Gate Valve Components
o Body
o The main housing that holds all the internal components.
o Constructed to resist pressure and environmental conditions.
o Gate (Wedge or Disc)
o The flat or wedge-shaped barrier that moves to open or close the flow.
o Designed for a tight seal when in the closed position.
o Seat
o Provides a surface for the gate to seal against when closed.
o Made from durable materials to resist wear and corrosion.
o Stem
o Connects the handwheel or actuator to the gate, transmitting motion.
o Available in rising or non-rising designs.
o Bonnet
o Covers the valve body and contains the stem packing to prevent leakage.
o Can be bolted, threaded, or welded for added security.
o Handwheel or Actuator
o Used to operate the valve manually or automatically.
o Packing
o Prevents leaks around the stem, ensuring a secure seal.
Functions and Applications of Gate Valves
o Shut-Off Function
o Primarily used to start or stop the flow in pipelines.
o Wide Applications
o Common in industries such as oil and gas, water treatment, power generation, and chemical processing.
o High-Pressure Systems
o Suitable for high-pressure applications due to their robust design.
o Isolation of Flow
o Provides effective isolation in systems requiring maintenance or inspection.
Advantages of Gate Valves
· Minimal flow resistance when fully open.
· Reliable sealing for shut-off applications.
· Long service life due to durable materials and design.
· Suitable for high-pressure and high-temperature environments.
Gate valve types:
Rising Stem Gate Valve
Non Rising Stem Gate Valve
Bellow Seal Gate Valve
Pressure Seal Gate Valve
Cryogenic Gate Valve
Forged Gate Valve
Gate valve Industries:
Textiles.
Power generation.
Refineries.
Petrochemical plants.
Shipbuilding
Chemical industry.
Paper factories.
Gate valve suppliers in UAE provide essential components for fluid control and piping systems, ensuring precise regulation of liquid and gas flow.
Description:
Available materials: SS304, SS904, SS904L, SS316, Aluminium Bronze, Monel, Bronze, Brass, Duplex steel, Inconel, Incoloy, Titanium, WCB, CF8, CF8M, CF3, CF3M, WC1, WC6, WC9, Cast iron, super duplex
Size: 1/2″- 64”
Class: 150 to 2500
Nominal Pressure: PN10 to PN450
Operations: Hand Wheel, Gear operated, Electric actuated and Pneumatic Actuated
Ends: Flanged(FF,RF,RTJ), Buttweld, Socket weld, Threaded
Standards: API607, DIN, BS, ANSI, AWWA, ASME, API6D
https://www.middleeastvalve.com/product-category/gate-valve/
