Sour Service Flange Adapter – 1-13/16" 10M x 2" FIG 1502 Female (Thread) | H2S Rated

The Flange Adapter, 1-13/16" 10M x 2" FIG 1502 Female (Thread) for Sour Service, is a high-integrity, heavy-duty crossover component engineered to safely bridge a bolted API 6A high-pressure connection with a temporary hammer union treating line in highly toxic H2S environments. Rated for a robust 10,000 PSI maximum cold working pressure, this specialized companion flange adapter provides an absolute, leak-proof transition point, allowing operators to safely route sour fluids and gases from wellheads, blowout preventers (BOPs), or manifold systems directly into temporary flowline infrastructure.

Operating in sour gas (H2S) environments subjects high-pressure flowline equipment to severe risks of hydrogen embrittlement and Sulfide Stress Cracking (SSC). To guarantee maximum safety and absolute containment integrity, this adapter is forged from premium, corrosion-resistant steel alloys and subjected to strictly controlled heat-treatment processes. This ensures that its metallurgical and hardness properties comply fully with all NACE MR0175 / ISO 15156 performance standards for hazardous sour service applications, safely maintaining a continuous 10,000 PSI working pressure (the standard industry de-rating for 1502 sour service iron).

This adapter features an integral, one-piece forged design that eliminates potential leak paths. Side A is a 1-13/16" 10M flanged profile featuring a precision-machined Ring-Type Joint (RTJ) groove engineered to seat a standard high-pressure metal ring gasket for a fail-safe wellhead barrier. Side B features an integral 2-inch FIG 1502 female thread (threaded sub) profile, precision-machined to receive a standard 2" 1502 male wing end for rapid, secure hammer-up connection within the toxic gas zone.

Features & Benefits

• Sour Service Compliant: Forged from specialized alloys and strictly heat-treated to comply with NACE MR0175 / ISO 15156 standards for safe, reliable operation in hazardous H2S environments.

• Direct Flange-to-Union Crossover: Provides a streamlined, high-strength transition from a bolted API flange to a temporary hammer union line, eliminating unnecessary intermediate fittings.

• 10,000 PSI Sour Service Rating: Safely and continuously handles working pressures up to 10,000 PSI (10K CWP), the established safety ceiling for combined 10M and FIG 1502 sour iron strings.

• Precision RTJ Sealing Surface: Side A features a perfectly machined ring groove that accommodates standard API 6A high-pressure metal ring gaskets for an optimal, metal-to-metal seal.

• Integral Forged Construction: Machined from a single solid piece of premium forged alloy steel, eliminating weld joints and reducing structural fatigue under severe mechanical vibration or cyclic stress.

Specifications & Technical Details

Applications

This sour service 1-13/16" 10M x 2" 1502 female flange adapter is a mandatory safety asset for upstream high-pressure surface routing within toxic gas zones. Typical applications include adapting API 6A gate valve outlets to temporary sour frac or flowback iron, executing high-pressure sour well testing connection setups, terminating toxic choke and kill manifold lines, and connecting sour gas extraction streams to separation equipment.

Quality Assurance

All our sour service integral crossover adapters undergo rigorous quality control and non-destructive metallurgical verification. The forged bodies are strictly tested for hardness to guarantee maximum resilience against Sulfide Stress Cracking. Each adapter undergoes comprehensive dimensional inspection, precise ring groove and thread gauging verification, and high-pressure hydrostatic testing to ensure absolute shell integrity under maximum working loads. Full material traceability (MTRs) and NACE certificates are available upon request.

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