Tungsten Carbide Valve Seat
Tungsten carbide valve seats are designed to withstand extreme working conditions involving high pressure, high temperature, and severe abrasion. Made from hard carbide materials, they are ideal for oil & gas equipment, chemical systems, diesel engines, and high-pressure pumps.
As a professional tungsten carbide parts manufacturer, we offer a wide range of standard and customized valve seat solutions to meet diverse industrial demands.
Types Of Tungsten Carbide Valve Seat
Tungsten carbide valve seats can be categorized into several structural types based on their sealing geometry and application requirements.
Flat Valve Seat
Flat valve seats possess a flat seat surface with a linear contact between the valve disc or plate. The design is appropriate for medium to low pressure applications where fluid control is achieved through flat surface sealing.
Because of its high density and corrosion resistance, flat valve seats give reliable sealing and a longer service life, over five times that of conventional materials. Sealing is accomplished by pre-tightening force between the valve plate and the seat.
Conical Valve Seat
Conical valve seats have a conical sealing surface that is matched with a conical valve core. The structure decreases fluid turbulence as well as the impact of particles and can be applied in high-pressure, high-temperature, and corrosive media. Conical seats are widely used in severe-service industrial systems where enhanced flow stability and sealing performance are required.
Spherical Valve Seat
Spherical valve seats are designed to mate with an annular sealing member or a spherical ball. Due to the geometric nature of the sphere, stress is distributed equally, thus improving sealing life and efficiency. These seats are used in rod-type and tubular oilfield pumps where reliable fluid control and long service life are required.
👉 Not sure which type to choose? Contact us for support.
Tungsten Carbide Valve Seat We Provide
We offer a complete line of tungsten carbide valve seats with customizable options to meet various industrial sealing needs.
Technical Specifications
Our tungsten carbide valve seats are available in multiple material grades to meet diverse operating conditions such as wear, pressure, temperature, and impact.
| XYMJ Grade | ISO Grade | Chemical Composition | Physical Mechanical Properties | ||||
| WC | Co | Density | Bend Strength | Hardness | |||
| % | % | G/Cm3 | N/mm2 | HRA | |||
| YG3 | K01 | 96.5-97 | 3 | 14.9-15.3 | ≥1180 | ≥91.0 | |
| YG6X | K10 | 93.5 | 6 | 14.8-15.1 | ≥1420 | ≥92 | |
| YG6 | K20 | 94 | 6 | 14.7-15.1 | ≥1600 | ≥91 | |
| YG8 | K20-K30 | 92 | 8 | 14.5-14.9 | ≥1600 | ≥90 | |
| YG10 | K40 | 90 | 10 | 14.3-14.7 | ≥1900 | ≥89 | |
| YG10X | K40 | 89 | 10 | 14.3-14.7 | ≥2200 | ≥89.5 | |
| YG15 | K30 | 85 | 15 | 13.9-14.2 | ≥2100 | ≥87 | |
| YG20 | K30 | 80 | 20 | 13.4-13.7 | ≥2500 | ≥85.5 | |
| YG20C | K40 | 80 | 20 | 13.4-13.7 | ≥2200 | ≥84 | |
| YG30 | G60 | 70 | 30 | 12.8 | ≥2750 | ≥82 | |
※Custom compositions and sizes are available on request.
Why Choose Valve Seat with Tungsten Carbide?
Choosing tungsten carbide as the material for valve seats offers significant advantages in performance, reliability, and service life, especially in harsh working conditions.
Extreme Heat and Hardness Resistance
With tungsten carbide, these seats stay dimensionally stable at 500 °C and maintain high hardness even at 1000 °C, making them ideal for high-temperature, high-load applications.
Exceptional Wear and Corrosion Resistance
The exceptional hardness of tungsten carbide,orders of magnitude greater than most standard metals, ensures valve seats can maintain sealing performance over extended periods, even in erosive or high-friction applications.
Precision Machining for Leak-Free Performance
Manufactured with tight tolerances and smooth sealing surfaces, they ensure reliable sealing and consistent performance in critical fluid control systems.
Where Our Tungsten Carbide Valve Seats Are Used
Our tungsten carbide valve seats are widely applied across various industries and demanding environments
Gas & Oil
Suitable for downhole safety valves, choke valves, flow beans, and seats for high-pressure pipeline ball valves and plug valves
Chemical & Coal Chemical Industries
Suitable for black/ash water valves, lock hopper valves, slag drain valves in coal slurry and slag handling systems. Wear-resistant control and shut-off valves in catalyst particle conveyance systems
Polysilicon & Silicon Materials Industry
All critical valves (e.g., discharge valves, switch valves) in silicon powder handling systems are combating abrasive silicon dust wear.
Power Generation & Metallurgy Industry
Suitable for ash and slag handling system valves in power plants and wear-resistant valves in blast furnace pulverized coal injection systems.
How We Stand Out in Tungsten Carbide Valve Seats
Discover why our tungsten carbide valve seats are a reliable choice
Superior Wear & Impact Resistance
Our valve seats are constructed of premium-grade tungsten carbide, providing exceptional hardness and abrasion resistance in environments of high pressure and impact.
Precision Machining & Tight Tolerance Control
Our precision machining service uses cutting-edge CNC equipment and strict quality assurance practices to achieve tight dimensional tolerances for perfect fits and reliable sealing performance.
Customizable Grades & Designs
Available in multiple grades such as YG6, YG8, YG15, and more, and customizable geometries to meet diverse industry requirements and special applications.
Experienced Manufacturer & Global Supply
With over 20 years of tungsten carbide valve seat manufacturing and ISO-certified production, we serve customers worldwide with fast delivery and professional technical support.