Wellhead 3 1/8'' 5K Check Valve

Wellhead 3 1/8'' 5K Check Valve – Reliable Flow Control for High-Pressure Downhole Applications

This premium 3 1/8'' 5K Check Valve is engineered for demanding oil and gas environments where consistent pressure management, corrosion resistance, and system integrity are non-negotiable. Designed with precision and durability in mind, it meets international industry standards such as API 6A and ASME B16.34, ensuring compliance with safety protocols across global operations. Whether deployed in deep well production, drilling fluid control, or pipeline maintenance, this high-pressure isolation device offers dependable performance under extreme conditions.

Main technical parameters:       
Working pressure:2000~20000PSI
Norminal bore: 2 1/16"~7 1/16"
Product specification level: PS1-PSL4
Perpormance requirement: PR1~PR2
Material class: AA~FF
Working medium: Oil, naturgal gas

Key features include a robust stainless steel body that resists chemical degradation and mechanical wear, an optimized spring-loaded or gravity-assisted closure mechanism that instantly prevents reverse flow, and a tight-sealing design that minimizes leakage risks while maintaining optimal system efficiency. The compact form factor makes it ideal for installations with spatial constraints, and its standardized 3 1/8'' connection ensures seamless integration into existing wellhead configurations without costly modifications.

We are API 6A manufacturer, using advanced metallurgy and CNC machining techniques, the 3 1/8'' 5K Check Valve undergoes rigorous testing under simulated downhole pressures up to 5000 psi. Internal components are designed to reduce frictional losses and extend service life, contributing to lower operational costs over time. With minimal moving parts and easy access for inspection or replacement, this valve supports rapid maintenance cycles—reducing downtime and enhancing overall field productivity.

Commonly used in offshore platforms, onshore drilling rigs, and well intervention systems, this wellhead check valve plays a critical role during multiple phases: from initial drilling (where it stops backflow of mud and fluids) to production optimization (ensuring unidirectional flow for efficient extraction), and even during workover procedures (where precise flow control enhances safety). Its adaptability across various tubing and casing setups allows engineers to customize deployment based on specific reservoir characteristics and operational goals.

Apart from the 3 1/8'' 5K Check Valve, various types of valves also play important roles. Such as Gate Valve and Plug Valve. Additionally, we offer a wide range of high-quality models of BOP, Mud Pump and Pipe. In drilling operations, Wellhead Christmas Tree, Wellhead Valve, the Pressure Control Equipment and Wellhead Tool are all very important and work together in coordination. We offer various high-quality product models.

Product Categories : Wellhead Equipment > Wellhead Valves