• Sour service repair kit for 2 inch flapper type check valve designed for H2S oilfield flowline and high pressure flowback applications
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Repair Kit for 2" Flapper Type Check Valve – Sour Service (H2S)

Repair Kit for 2" Flapper Type Check Valve – Sour Service (H2S)

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The Repair Kit for the 2" Flapper Type Check Valve (Sour Service) provides all the essential, high-specification internal replacement components required to fully rebuild and restore your high-pressure flowline check valve for safe operation in hazardous H2S environments. Designed specifically for 2-inch flapper-style check valves (commonly integrated with FIG 1502 hammer union connections), this comprehensive kit ensures reliable, unidirectional fluid flow and prevents dangerous high-pressure backflow during highly corrosive well servicing operations.

Operating in sour gas (H2S) environments exposes flowline equipment to extreme risks, primarily Sulfide Stress Cracking (SSC) and rapid material degradation. To combat this, every metallic component in this repair kit is manufactured from specialized, corrosion-resistant steel alloys and strictly heat-treated to meet NACE MR0175 / ISO 15156 standards. Similarly, the included elastomer seals are formulated from advanced, H2S-resistant compounds (such as specialized Viton or HNBR) to prevent explosive decompression and chemical breakdown.

The flapper design features a full-bore opening when active, making it highly suitable for abrasive fluids, frac sand, and heavy cement slurries often encountered in sour wells. This kit allows field technicians to quickly swap out worn internal parts directly on location, dramatically reducing non-productive time (NPT) and saving the significant cost of replacing the entire specialized valve body.

Features & Benefits

  • Sour Service Compliant: All metallic components are precision-machined and heat-treated to strict maximum hardness levels in full compliance with NACE MR0175 / ISO 15156 for safe H2S operation.

  • H2S-Resistant Seals: Includes premium elastomer O-rings and packings specifically engineered to withstand harsh chemicals and sour gas without degrading or losing sealing integrity.

  • Complete Rebuild Solution: Includes all necessary internal components (NACE-compliant flapper, seat, hinge pin, torsion spring, and seals) to fully restore valve functionality.

  • Optimized for Slurries: Flapper design maintains a full, unobstructed bore, reducing turbulence and wear when pumping highly abrasive fluids in corrosive environments.

  • Field Replaceable: Designed for quick and easy inline maintenance, allowing operators to rebuild the valve on location and minimize downtime.

Specifications & Technical Details

Category Specification
Component Type Internal Repair / Rebuild Kit
Compatible Valve Type Flapper Type Check Valve
Nominal Valve Size 2 Inch
Typical Pressure Rating Up to 15,000 PSI (15K CWP)
Typical Kit Contents Flapper, Seat, Hinge Pin, Torsion Spring, H2S Elastomer Seals
Material NACE Compliant High-Alloy Steel Internals / H2S-Resistant Elastomers
Service Application Sour Service (H2S)
Industry Compliance NACE MR0175 / ISO 15156

Applications

This repair kit is essential for the routine maintenance and rapid field repair of 2" Flapper Type Check Valves used in hazardous, high-pressure oilfield applications. Typical applications include sour gas well testing, H2S frac-flowback operations, cementing lines, acidizing jobs, and choke manifolds where a full-bore flow path and reliable reverse-flow prevention in corrosive environments are mandatory.

Quality Assurance

All components within the 2" Flapper Check Valve Sour Service Repair Kit undergo rigorous metallurgical testing and strict quality control processes. The metallic parts are verified for proper hardness levels to ensure resistance to Sulfide Stress Cracking. Full material traceability and NACE certification are available to guarantee unmatched safety and compliance in the field.

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