3" 10,000 PSI Fig 1502 MxF Blast Joint (17" Length) – Sour Service (H2S) Flowline Fitting

The 3" Figure 1502 Male x Female (MxF) Sour Service Blast Joint is a high-capacity, heavy-duty sacrificial flowline component engineered specifically to withstand massive volumes of abrasive, high-velocity fluids in environments where lethal Hydrogen Sulfide (H2S) gas is present. In strict accordance with NACE MR0175 / ISO 15156 standards for sour gas environments, this large-bore Fig 1502 fitting is carefully heat-treated to a controlled hardness and safely de-rated to a Cold Working Pressure (CWP) of 10,000 PSI (10K) to prevent Sulfide Stress Cracking (SSC).

Measuring exactly 17 inches in overall length, this extended 3-inch bore blast joint provides a highly effective, elongated wear zone for large-diameter modular pumping assemblies operating under prolonged turbulence. It features industry-standard 3" Figure 1502 hammer union connections—a Male end (integral sub) on one side and a Female end (threaded hub) on the other. Acting as a heavy-walled "wear spool," it is strategically installed in high-turbulence zones where large volumes of fluid change direction or pass through chokes. By taking the brunt of the erosive forces across its extended body, the blast joint protects highly expensive permanent manifold infrastructure and plug valves from catastrophic washouts in toxic environments.

Manufactured from premium forged alloy steel tailored for sour environments, this blast joint features an extra-thick wall design that delivers superior structural integrity, ensuring absolute fluid containment and personnel safety during critical sour well testing, large-scale flowback, and stimulation operations.

Features & Benefits

• 10,000 PSI CWP Sour Service Rating: Safely contains high-volume fluid pressures in lethal H2S environments; correctly de-rated from standard 15K to meet strict NACE hardness limits.

• NACE MR0175 / ISO 15156 Compliant: Specially engineered and heat-treated to resist Sulfide Stress Cracking (SSC) and Hydrogen Embrittlement.

• Large-Bore Sacrificial Protection: The 3-inch, heavy-walled design absorbs severe internal erosion caused by massive volumes of high-velocity proppants and abrasive slurries.

• MxF Fig 1502 Connections: Features industry-standard 3" Figure 1502 Male x Female hammer union ends for rapid, secure integration into existing 3-inch sour flowlines.

• Extended 17" Length: Provides an exceptionally long internal wear zone to manage sustained fluid turbulence and protect critical downstream valves.

• Cost-Effective Maintenance: Easily inspected and swapped out when worn, minimizing rig downtime and ensuring maximum safety in hazardous gas operations.

Specifications & Technical Details

Applications

This extended 17" long 3" Fig 1502 sour service blast joint is mandatory for deployment in large-bore systems experiencing high fluid turbulence where lethal H2S gas is anticipated. Typical applications include direct installation immediately downstream of large-diameter choke manifolds, plug valves, and directional elbows on high-volume well testing packages, flowback iron setups, and stimulation skids operating in known sour gas fields.

Quality Assurance

Each large-bore sour service blast joint is manufactured to exacting standards under rigorous quality control protocols. The component undergoes strict metallurgical testing, including rigorous hardness testing, to ensure complete compliance with NACE MR0175 limits. It also undergoes dimensional inspection focused on the critical internal wall thickness, full material traceability, and high-pressure hydrostatic testing to ensure fail-safe performance at 10,000 PSI in highly toxic environments.

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