Silicon Carbide Ceramic Valve Seat & Valve Core

Extreme environmental resilience

Resistant to strong acids, strong alkalis, oxidants, and organic solvent corrosion, applicable to a full pH range of 0-14; chemically inert, superior to stainless steel/alloys, preventing ion leaching and contamination of ultra-pure fluids. Capable of long-term working temperatures exceeding 1600°C, with excellent thermal shock stability and pressure resistance greater than 100 MPa, suitable for supercritical fluids and high-pressure steam systems.

Reliability of Mechanics and Thermodynamics

Compressive strength is greater than 3500 MPa, with no risk of plastic deformation. It has a low coefficient of thermal expansion compatible with most metal housings, preventing seal failure caused by thermal cycling. Additionally, its high thermal conductivity quickly dissipates localized frictional heat, preventing thermal stress-induced cracking.

Outstanding tribological performance

With an ultra-low abrasion rate, the hardness of the SiC-SiC friction pair exceeds 2500 HV. Its self-lubricating properties significantly reduce adhesive wear, providing a lifespan over five times that of aluminum oxide ceramic valves. It is resistant to wear from particle erosion and can withstand media containing solid particles (such as slurry and catalysts), with a surface erosion rate of less than 0.01 mm per year.

Process Industry

Control of highly corrosive media (chloralkali production, acid regeneration equipment), catalyst delivery valves, coal chemical black water valves, supercritical CO₂ injection valves for oil and gas extraction, and high-temperature steam regulation valves for geothermal power generation.

Semiconductors and Specialty Manufacturing

High purity chemical (HF, H₂SO₄) distribution valves, CMP slurry control valves, process valves for the preparation of polysilicon Cl₂/SiHCl₃, and silane delivery valves.

Environmental Protection and Nuclear Industry

High-temperature valves for the incinerator melting system, control valves for radioactive waste liquid, boric acid regulation valves for the primary circuit, and sealing valves for liquid metal coolants (sodium/lead-bismuth).