A stainless steel gate valve is a type of valve used to control the flow of liquids or gases in a pipeline. It's called a gate valve because it has a gate-like disc or wedge that moves up and down to either block or allow flow through the valve.
Stainless steel gate valves are commonly used in applications where corrosion resistance, durability, and reliable shut-off are essential, such as in industrial, chemical, petrochemical, and water treatment systems. They are available in a variety of sizes, pressure ratings, and configurations to suit different requirements.
Wide range of applications: Stainless steel gate valves are suitable for a wide range of applications across various industries, including oil and gas, petrochemical, water treatment, and industrial processes, thanks to their corrosion resistance and durability.
Reliable sealing: Gate valves provide a tight seal when fully closed, helping to prevent leakage and ensure the integrity of the system.
Straight-through flow: When fully open, gate valves provide a straight-through flow path with minimal obstruction, reducing pressure drop and allowing for efficient fluid flow.
Variety of sizes and pressure ratings: Stainless steel gate valves are available in a wide range of sizes and pressure ratings to suit different applications, providing flexibility in design and installation.
Body: The body of the gate valve is typically made of stainless steel, which provides corrosion resistance and durability. It houses the other components of the valve and provides the main structure.
Gate/Wedge: The gate or wedge is the movable component of the valve that controls the flow of fluid. It is usually made of stainless steel as well and is designed to fit snugly into the valve body to create a tight seal when closed. The gate moves up and down within the valve to open or close the flow passage.
Stem: The stem is a threaded rod that connects the gate to the actuator (handle, wheel, or motor) located on the exterior of the valve. When the actuator is turned or operated, it moves the stem, which in turn moves the gate to control the flow of fluid.
Bonnet: The bonnet is the top portion of the valve body that encloses the stem and protects it from external elements. It is usually bolted or screwed onto the valve body and may contain packing material to provide a seal around the stem.
Packing/Gland: The packing or gland is a sealing mechanism located around the stem where it exits the bonnet. It prevents leakage of fluid from the valve body along the stem. Packing material, often made of PTFE or graphite, is compressed around the stem by a gland nut to create a tight seal.
Seats: The seats are sealing surfaces located on either side of the gate that come into contact with the gate to form a tight seal when the valve is closed. They are typically made of stainless steel or a resilient material such as EPDM or PTFE to provide a secure seal and prevent leakage.
Actuator: The actuator is the mechanism used to operate the valve. It can be a manual handwheel, lever, or gear for manual operation, or it can be automated with an electric, pneumatic, or hydraulic actuator for remote or automatic operation.
Material of Stainless Steel Gate Valve
| Number |
Name |
Material |
| 1 |
Body |
ASTM A351 CF8M |
| 2 |
Disc |
ASTM A351 CF8M |
| 3 |
Stem |
ASTM A276 316 |
| 4 |
Bonnet |
ASTM A351 CF8M |
| 5 |
Body Gasket |
PTFE |
| 6 |
Snap Ring |
ASTM A276 316 |
| 7 |
Washer |
ASTM A276 316 |
| 8 |
Packing |
PTFE |
| 9 |
Packing Sleeve |
ASTM A276 304 |
| 10 |
Packing Gland |
ASTM A351 CF8M |
| 11 |
Hand Wheel |
Aluminium Alloy |
| 12 |
Nut |
ASTM A194-B8M |
| 13 |
Plain Washer |
ASTM A276 304 |
| Size |
DN |
L |
H |
D |
| ½" |
15 |
55 |
95 |
62 |
| ¾" |
20 |
61 |
100 |
72 |
| 1" |
25 |
68 |
105 |
72 |
| 1 ¼" |
32 |
72 |
125 |
78 |
| 1 ½" |
40 |
79 |
145 |
95 |
| 2" |
50 |
87 |
165 |
95 |
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