Thermal Spray Coated Leak-Proof FC Valve Seat for Petroleum

Product Description

The FC (Failed Close) automatic shut-off valve seat is a core sealing and vulnerable component of gate valves used in oil drilling, production, oil and gas gathering and transportation, downhole operations, and wellhead systems.

The product employs a professional fail-safe shut-off (FC) design. When sudden conditions occur in oilfield equipment, such as power outages, abnormal system pressure, or actuator malfunctions, the valve seat, in conjunction with the valve structure, automatically and quickly closes, locking the oil and gas medium passage. This fundamentally prevents safety accidents such as blowouts, medium leaks, and equipment malfunctions, strictly adhering to the safety standards for high-risk oilfield operations.

The valve seat uses high-strength alloy structural steel as its base material, precision-machined using CNC lathes and grinders to ensure assembly accuracy. The sealing surface undergoes a high-velocity oxygen fuel spraying (HVOF) tungsten carbide (WC) strengthening process, resulting in a coating with strong adhesion, high hardness, erosion resistance, and corrosion resistance. It can withstand harsh operating conditions such as sandy mud, high-pressure oil and gas, and corrosive media in oilfields for extended periods, significantly improving the sealing stability and service life of the gate valve. It is a core component of valve systems in onshore oilfields and offshore drilling platforms.

Product Specifications

Product Features

1. Fail-Safety Assurance
Employs FC (Failed Close) automatic shut-off design, quickly closing and locking in case of power failure or equipment malfunction to prevent oil and gas leaks, complying with oilfield safety operation regulations.

2. Ultra-Wear-Resistant and Erosion-Resistant
The sealing surface features a tungsten carbide thermal spray coating with a hardness ≥ HRC75, strongly resisting high-speed erosion from sand-containing media, resulting in a service life far exceeding that of ordinary valve seats.

3. High-Pressure Sealing Stability
Precision-machined sealing surfaces achieve high precision in smoothness and flatness, ensuring zero leakage and no pressure relief under high-pressure conditions, providing long-lasting and reliable sealing performance.

4. Strong Corrosion and Impact Resistance
Double corrosion resistance of the substrate and coating, suitable for harsh conditions such as salt spray, acidic oil and gas, and mud; the high-strength substrate is impact-resistant, non-deformable, and crack-free.

5. Precise and Universal Assembly
Standard structural dimensions perfectly match various oil gate valves, facilitating easy installation, smooth opening and closing without jamming, and requiring no equipment modification.

6. Strong Customization and Adaptability
Supports customization of size, material, coating, and pressure rating to meet the specific needs of different oilfield equipment and operating conditions.

7. Significant cost reduction and efficiency improvement: Ultra-long service life reduces replacement frequency, lowers equipment downtime and maintenance costs, and improves oilfield operation efficiency.

Product Packaging

Standard Export Packaging Specification
Outer Layer: Fumigation-free plywood box or heavy-duty carton.
Protection: The packaging system is designed to be impact-resistant, moisture barrier, and anti-corrosive, guaranteeing the integrity of the goods during maritime transit.

Product Transportation

Logistics & Delivery
● Maritime Transport
● Land & Rail (Surface Transport)