4-1/16" 15M x 4" Fig 1502 Female Thread Flange Adapter – Oil & Gas Flowline Fitting

The Ultra-High-Pressure Flange Adapter, 4-1/16" 15M x 4" Fig 1502 Female Thread, is an extreme-duty, maximum-capacity crossover component expertly engineered to provide a robust, leak-free connection between massive large-bore API 6A flanged assets and high-volume 4-inch hammer union flowlines. Designed for the most demanding and rigorous upstream oilfield operations, this specialized crossover adapter allows operators to safely and seamlessly bridge a 4-1/16" 15,000 PSI (15M) flanged connection with a massive 4" Figure 1502 female union interface without restricting flow capacity.

Constructed from premium high-integrity forged alloy steel, this crossover adapter easily withstands the severe internal stresses and highly abrasive environments typical of ultra-high-volume frac support, heavy well testing, and severe flow-back procedures. The flanged end conforms strictly to API 6A dimensional and material requirements for a 4-1/16" bore, while the precision-machined 4-inch 1502 female threaded end ensures optimal thread engagement, heavy-duty vibration resistance, and superior seal integrity under massive 15,000 PSI pressure loads and immense fluid velocities.

Serving as a critical pressure-control link, this 15M flange adapter optimizes layout flexibility, seamlessly integrating heavy-duty manifold setups and ultra-high-pressure flowline configurations without compromising operational safety or high-rate fluid capacity.

Features & Benefits

• Seamless High-Capacity Integration: Safely bridges a massive 4-1/16" 15,000 PSI API flange with a standard 4" Figure 1502 Female Hammer Union end for versatile, maximum-volume piping transitions.

• 15,000 PSI Rating (15M): Engineered to safely contain ultra-high-pressure upstream environments, perfectly matching the 15,000 PSI rating of the flanged end and the 1502 union.

• Forged Alloy Steel Construction: Built to handle highly abrasive drilling and frac fluids, high-velocity flows, and severe oilfield handling without compromising structural integrity.

• Precision-Machined Threads: Ensures reliable makeup and smooth, secure engagement with corresponding 4-inch male union components.

• Maximum-Volume Reliability: Maximizes structural strength in high-vibration, ultra-high-pressure systems and accommodates the immense flow rates required in heavy fracturing operations.

• Service Reliability: Manufactured to meet rigorous quality, dimensional, and material verification standards for standard oilfield service.

Specifications & Technical Details

Applications

This 15M flange to 4-inch 1502 female thread hammer union adapter is essential for ultra-high-pressure upstream operations requiring flexible structural crossovers and uncompromised, high-capacity fluid transfer. Typical applications include transitioning flow from heavy-duty large-bore wellhead tree components, massive surface well testing flowlines, severe service flow-back piping, heavy frac manifold integration, and safely interfacing massive 4-1/16" 15M flanged valve assemblies with standard 4-inch 1502 temporary pipework.

Quality Assurance

Each crossover adapter undergoes strict quality inspection protocols, including severe hydrostatic shell testing, dimensional checks, precise thread gauging, and complete material traceability verification (MTRs) to ensure reliable and repeatable pressure containment in the harshest operational conditions.

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