A KEFA gate valve controls the flow of fluid by raising or lowering a gate or wedge-shaped disk to open or close the flow port. It is primarily designed for either fully open or fully closed positions and is commonly used in applications where a straight-line flow with minimal pressure drop is required.
The operation of a gate valve involves the movement of a gate or disk perpendicular to the flow direction. When the valve is fully open, the gate is lifted entirely, allowing unrestricted flow. Conversely, when the valve is fully closed, the gate is lowered to block the flow completely.
Gate valves are known for their excellent shut-off capabilities, as the gate comes into full contact with the valve seat, creating a tight seal. This feature makes them suitable for applications where leak-tight isolation is essential.
Gate valves are commonly used in various industries, including oil and gas, water and wastewater treatment, power generation, and chemical processing. They are often preferred in applications that involve low velocity, on/off operations or where a simple, reliable, and robust valve is required.
Usually, gate valves are straightforward and reliable devices used to control the flow of fluid in a pipeline. They offer excellent shut-off capabilities, making them suitable for applications requiring leak-tight isolation. Gate valves are widely used across different industries for their simplicity, durability, and ability to handle a wide range of fluids and pressures.
Typical Size Ranges: From 3 in through 24 in (DN 50 to DN 600)
Typical Pressure Classes: ANSI 125, 150, 300, 400 and 600 (PN 16, 20, 50, 64 and 100)
Typical Temperature Ranges: -20 F to 1022 F (-29 C to 550 C)
Typical Materials: Body: Cast Iron, Carbon Steel, ASTM A217 Grade WC6, WC9
ASTM 890/890M Duplex Stainless Steel
Seat: Stainless Steel or Stellite
Gate: Stainless Steel or Stellite
Stem: ASTM 276/276M Stainless Steel
Packing: Expanded Graphite
For applications with specifications deviating from the once listed above, please contact factory for a quote.
