LIKE VALVE Stainless Steel Socket Weld Gate Valve, A182 F316L Manual Gate Valve, Corrosion-Resistant Small Bore Welded Gate Valve
1. Body (1)
This is the main structure of the valve, made of stainless steel, and is used to bear the internal medium pressure.
It is connected to the pipeline through socket welding (SC) and is the basic load-bearing component of the entire valve.
2. Valve Cover (2)
Located above the valve body, it is connected to the valve body with bolts, forming a closed internal space.
Its main function is to protect the operation of the valve stem and gate plate and provide sealing.
3. Gate Plate (3)
The core component in red in the figure, it realizes the opening and closing of the pipeline through up and down movement.
The gate plate is closely adhered to the valve seat and can achieve reliable sealing.
4. Valve Stem (4)
The green long rod component in the figure, connecting the handwheel and the gate plate.
Its function is to convert the rotational motion of the handwheel into the linear up and down movement of the gate plate.
5. Valve Seat Seal (5)
The blue component in the figure, installed at the contact position between the valve body and the gate plate.
Its function is to ensure the sealing performance of the gate plate when it is closed, preventing the leakage of the medium.
6. Valve Stem Sealing Packing (6)
Located at the mating part of the valve cover and the valve stem, usually made of graphite or polytetrafluoroethylene.
Its function is to prevent the medium from leaking outward along the valve stem.
7. Packing Press Cover (7)
Used to press the valve stem sealing packing tightly, ensuring the reliability of the seal.
The packing press cover can be adjusted by the bolts to compensate for the wear of the packing.
8. Support (8)
The supporting component connecting the valve cover and the handwheel, providing a stable guide for the valve stem.
9. Valve Stem Nut (9)
Installed in the support, in mesh with the valve stem.
When the handwheel rotates, this nut drives the valve stem up and down.
10. Thrust Bearing (10)
Reduces the friction between the valve stem nut and the handwheel, making the operation more effortless.
11. Pin Shaft (11)
Used to connect the handwheel and the valve stem nut, transmitting torque.
12. Positioning Bolt (12)
Used to fix the relative position of the support and the valve cover, preventing loosening.
13. Packing Cover Bolt (13)
Used to fix the packing cover, compressing the sealing packing tightly.
14. Handwheel Hub (14)
The central connecting component of the handwheel, connected to the valve stem nut.
15. Handwheel (15)
The yellow component in the figure, is the execution mechanism for manual operation of the valve.
By rotating the handwheel, the action of the valve stem and gate plate is driven.
16. Handwheel Press Cover (16)
Used to fix the connection between the handwheel and the valve stem nut, preventing loosening.
Key Dimension Markings
SC: Socket Welding (Socket Weld) connection form
L1: The center length of the valve
S: Inner diameter of the socket welding opening
B: Outer diameter of the socket welding opening
SW: Welding end size of the socket welding opening
D: Valve diameter
Material Details: The whole valve is forged from F304 stainless steel. The valve body is subjected to solution heat treatment to eliminate stress. The sealing surface is overlay welded with Stellite hard alloy to enhance wear resistance and erosion resistance.
- Core Performance: It adopts an outside screw & yoke wedge type single gate plate structure. The opening and closing process is visible, allowing intuitive judgment of the valve opening degree. The socket weld connection is helium leak tested to ensure reliable sealing, suitable for frequent opening and closing working conditions.
- Model Specifications: Pressure rating Class 800/1500/2500, nominal diameter DN15 to DN80. It can provide certifications complying with API 602, GB/T 12234 and other standards. Customization for low temperature (-196℃) and high pressure is supported.
- Application Scenarios: LNG receiving terminals, fine chemical industry, semiconductor manufacturing and other fields. It is used for the shut-off and regulation of low-temperature liquid nitrogen and corrosive chemical media.