Tungsten Carbide Top Seat Ø479.86×Ø426×37 mm (Valve Seat Ring)
Product Overview
Top seats are critical sealing components in choke valve assemblies. This large diameter top seat is designed to handle extreme working conditions including high pressure, sand erosion, and continuous flow impact.
We supply both blanks and fully finished valve seat rings with strict concentricity and flatness control.
Specifications
| Parameter |
Value |
| Product |
Tungsten Carbide Top Seat Ring |
| OD |
Ø479.86 mm |
| ID |
Ø426.00 mm |
| Thickness |
37.00 mm |
| Material |
WC-Co / WC-Ni |
| Hardness |
HRA 86–92 (depends on grade) |
| Finish |
Rough / Ground / Lapped |
| Standard |
OEM as per drawing |
Key Benefits
- Superior wear resistance and long lifetime
- High compressive strength for high-pressure sealing
- Excellent erosion resistance for abrasive media
- Precision grinding available for sealing face
- Suitable for repeated replacement orders
Applications
Commonly used in:
- Oilfield choke valves (Choke Trim Assemblies)
- Wellhead manifold valves
- Christmas tree flow control systems
- Refinery and petrochemical high-pressure valve assemblies
- API standard choke valve replacement parts
Optional Surface Finish
- Fine grinding for OD/ID
- Lapping for sealing face
- Mirror polishing for tight sealing requirement
- Chamfer and groove machining
FAQ
Q1: What is the function of a carbide top seat?
It acts as the main sealing seat surface inside choke valves and high-pressure flow control valves.
Q2: Can you supply this top seat with tight tolerance?
Yes. We can supply finished rings according to your tolerance, including concentricity and flatness requirements.
Q3: What industries use this size of top seat ring?
Mainly oil & gas wellhead and refinery flow control systems.
