Stainless steel gate valves are essential components in fluid control systems, offering robust performance and reliable operation in a wide range of applications. These valves are designed to control the flow of liquids and gases by raising or lowering a gate (a flat or wedge-shaped disc) inside the valve body. When the gate is raised, it allows fluid to flow through the valve, and when lowered, it blocks the flow.
Stainless steel gate valves are particularly popular due to their corrosion resistance, making them suitable for use in demanding environments where exposure to moisture, chemicals, or extreme temperatures is common. The stainless steel construction also provides excellent durability, ensuring long-term performance and minimal maintenance requirements.
One of the primary advantages of stainless steel gate valves lies in their corrosion resistance properties. Stainless steel, renowned for its resistance to rust and corrosion, ensures longevity and durability even in harsh operating conditions, making these valves suitable for a diverse range of industries and applications.
Moreover, stainless steel gate valves are available in various sizes, pressure ratings, and configurations, allowing for seamless integration into different piping systems. Whether in petrochemical plants, water treatment facilities, or industrial processes, these valves provide versatile and dependable fluid control solutions.
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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