Long Sweep Elbow – 3" FIG 1502 Male (Wing) x 3" FIG 1502 Female (Thread) | Sour Service (H2S)

The Long Sweep Elbow, 3" FIG 1502 Male (Wing) x 3" FIG 1502 Female (Thread) for Sour Service, is a premium large-bore forged steel directional component engineered to safely alter fluid paths by 90 degrees in highly toxic H2S environments. Unlike standard short-radius elbows, this specialized fitting features an extended, gradual curvature. This "long sweep" geometry significantly reduces fluid friction and lessens the erosive impact of high-velocity, abrasive slurries, making it highly effective for optimizing flow efficiency while maintaining absolute containment integrity in massive volumetric operations.

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

The 3" FIG 1502 configuration features an integral male wing end complete with a heavy-duty wingnut, paired with a precision-machined female thread (sub) connection. This allows for rapid, secure, and leak-free hammer-up installation into existing large-bore manifolds, treating lines, and toxic-gas-rated temporary piping layouts.

Features & Benefits

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

• Long Sweep Geometry: Provides a smooth, extended-radius 90-degree curve that optimizes fluid dynamics, reduces pressure drops, and minimizes velocity-induced erosion.

• Large-Bore Efficiency: The full 3-inch bore size accommodates massive volumetric flow rates without restricting stimulation or production streams.

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

• Male x Female Integration: Equipped with a heavy-duty 1502 wingnut on one side and a precision-machined 1502 threaded sub on the other for fast, direct inline connection in hazardous zones.

Specifications & Technical Details

Applications

This sour service 3-inch long sweep elbow is a mandatory safety asset for high-pressure, high-volume surface routing where low-turbulence fluid transfer is required within toxic gas zones. Typical applications include building massive sour frac manifolds, toxic high-rate well testing packages, H2S flowback lines, complex choke and kill manifold layouts, and large-bore pump discharge headers exposed to corrosive media.

Quality Assurance

All our sour service integral fittings 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 elbow undergoes comprehensive dimensional inspection and hydrostatic pressure testing prior to shipment to ensure absolute shell integrity and leak-free seal seating under maximum working loads. Full material traceability (MTRs) and NACE certificates are available upon request.

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