4 1/16'' 5K FC Type Manual Gate Valve

Wellhead 4 1/16'' 5K FC Manual Gate valve – Reliable and Robust Solution for Oilfield Operations

This high-performance API 6A FC Type Manual Gate Valve, specifically designed for wellhead applications, offers exceptional sealing integrity and operational reliability in demanding oil and gas environments. With a nominal size of 4 1/16'' and pressure rating of 5,000 psi (5K), this manual gate valve is engineered to meet the stringent standards of the petroleum industry. Whether deployed in offshore platforms or onshore drilling rigs, this FC Type Manual Gate Valve ensures safe and efficient control of fluid flow under extreme conditions.

Key features include a forged carbon steel body, corrosion-resistant stem and seat materials, and a robust handwheel mechanism that enables precise manual operation without hydraulic assistance. Its design complies with API Spec 6A, making it suitable for use in subsea, surface, and downhole well control systems. The valve’s face-to-face dimensions adhere to ANSI B16.10 standards, ensuring compatibility across global equipment fleets. This product is ideal for operators seeking long-term durability, minimal maintenance, and compliance with international oilfield safety protocols.

The detailed construction of the Wellhead 4 1/16'' 5K FC Manual Gate Valve includes a full-bore design for unrestricted flow, dual-seal technology (metal-to-metal and soft seating) to prevent leakage, and a compact actuation system that reduces operator fatigue during frequent operations. It is manufactured using precision machining techniques and undergoes rigorous hydrostatic testing at 1.5 times the rated working pressure to verify structural integrity. These valves are commonly referred to as "manual Gate Valves for oilfield production systems" or "FC-type manual gate valves for wellhead control," reflecting their widespread adoption in upstream petroleum engineering projects worldwide.

Common applications include Choke Manifold systems, kill lines, and wellhead isolation during workover or completion activities. Operators in regions such as North America, Europe, the Middle East, and Southeast Asia rely on this valve for its consistent performance in high-pressure environments. It serves as a critical component in both conventional and unconventional drilling operations, including shale gas extraction, deepwater exploration, and enhanced oil recovery processes. When integrated into a complete well control package, this valve enhances system redundancy and supports rapid response during emergency shutdown scenarios.

Customer feedback highlights its ease of installation, reliable sealing even after thousands of cycles, and excellent resistance to erosion from abrasive fluids. Users often note that it outperforms lower-rated alternatives in harsh climates, such as Arctic drilling sites or desert-based operations where temperature fluctuations and particulate contamination are common challenges. Many engineers appreciate the clear visual indicators for open/closed positions and the ergonomic handle design that minimizes physical strain during prolonged use.

Frequently asked questions include inquiries about compatibility with other API 6A components, expected service life under continuous operation, and availability of spare parts for maintenance. While some users initially question the manual nature of the valve compared to automated systems, they typically find that the mechanical simplicity provides greater resilience in power-outage situations. Maintenance intervals are recommended every 6 months or after 500 operating cycles, depending on environmental exposure. Proper lubrication of the stem and regular inspection of the sealing surfaces ensure optimal performance over time.