Full Open Safety Valve (FOSV) TIW Valve

BEIJING - Nov. 6, 2025 - PRLog -- The Full-Open Safety Valve (FOSV) is a high-performance safety valve designed for demanding downhole operations. Certified by Orchid Energy's design and quality system, it meets Class I and Class II drill pipe safety valve,kelly valve standards, ensuring superior quality and reliability. Its bidirectional pressure design maintains stable performance in complex downhole environments, while low-torque operation allows for easy opening closing even under wellbore pressure. Furthermore, the hydrogen sulfide-resistant version fully complies with NACE standards, resisting hydrogen sulfide corrosion and ensuring long-term stable operation under harsh conditions.

Applications: The Full-Open Safety Valve (FOSV) is widely used in oil well operations, especially in pressurized operations, effectively preventing fluid loss and mitigating well pressure fluctuations. Its full-bore design ensures unobstructed fluid flow, reducing resistance and pressure loss during operations. Whether for routine operations or emergency responses in complex wells, the FOSV provides reliable sealing and pressure control, supporting routine workovers, deep drilling, and downhole tool deployment/retrieval.

Product Features:
1. Compliant with industry standards. 1. Meets API Class I and II drill pipe safety valve certifications, adhering to globally leading quality systems.
2. Bidirectional pressure design. Withstands bidirectional pressure, adapting to changes in fluid flow direction and pressure fluctuations in dynamic downhole environments.
3. Low torque operation. Minimal operating torque under wellbore pressure, reducing wear, simplifying operation, and improving work efficiency.
4. Hydrogen sulfide resistant version. Constructed with NACE-compliant materials (e.g., 4130/4140 alloy steel, hardness ≤HRC 22), preventing sulfide stress cracking in acidic gas environments.
5. High-torque valve body connection. Reinforced connection withstands torque and pressure, ensuring mechanical integrity under harsh operating conditions.
6. Multiple sizes and end connections. Covering sizes from 2-⅜" to 7-⅝", using API standard threads (e.g., NC50) or specialized threads (e.g., VAM TOP) for seamless integration.
7. Full-bore, field-proven, and easy-to-maintain design:
(1) Full-bore (≥95% of the pipe's inner diameter) minimizes pressure drop and allows tools to pass through.
(2) Field-proven reliability under various operating conditions (e.g., 15,000 PSI test pressure).
(3) Modular construction simplifies maintenance, reducing downtime and costs.
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