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FOSV-Full Open Safety Valve

The high performance Full Open Safety Valves (FOSV) are used by the well service industry to prevent fluid loss and as a protection against well pressure fluctuations. Our unique design allows for positive sealing under load in gas environments, making these valves the superior choice for snubbing applications as well.

Classification:

IBOPs

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Detailed Description

Product Overview

The Full Open Safety Valve (FOSV) is a high-performance safety valve engineered for rigorous well intervention operations. Certified for Class I & II Drill Stem Safety Valves/Upper or Lower Kelly Cocks under the PetroZHR Design and Quality System , it ensures exceptional quality and reliability. Its unique bidirectional pressure design maintains stable performance in complex downhole environments, while low-torque operation enables effortless opening/closing even under wellbore pressure. Additionally, the H₂S Resistant Version fully complies with NACE standards , resisting hydrogen sulfide corrosion to guarantee long-term stability in harsh conditions .

Applications

The Full Open Safety Valve (FOSV) is widely used in well servicing , particularly for snubbing applications , where it prevents fluid loss and mitigates well pressure fluctuations. Its full-bore design ensures unimpeded fluid flow, reducing resistance and pressure loss during operations. Whether for routine interventions or emergency responses in complex wells, the FOSV delivers reliable sealing and pressure control, supporting operations such as Conventional workovers, Deepened drilling, Deployment/retrieval of downhole tools .

Product Features

1. Industry Standard Compliance. Meets API certification for Class I & II Drill Stem Safety Valves, adhering to the PetroZHR Quality System for globally advanced performance .

2. Bidirectional Pressure Design. Withstands pressure from both directions, adapting to fluid flow reversals and pressure surges in dynamic downhole environments .

3. Low-Torque Operation. Minimal operating torque under wellbore pressure reduces wear, simplifies handling, and enhances operational efficiency .

4. H₂S Resistant Version. NACE-compliant materials (e.g., 4130/4140 alloy steel, hardness ≤HRC 22) prevent sulfide stress cracking in sour gas environments .

5. High-Torque Body Connection. Reinforced connections withstand extreme torque and pressure, ensuring mechanical integrity in demanding operations .

6. Diverse Sizes & End Connections. Covers 2-⅜" to 7-⅝" sizes with API-standard (e.g., NC50) or proprietary threads (e.g., VAM TOP), enabling seamless integration .