4-1/16" 15M x 3" Fig 1502 Female Thread Flange Adapter – Oil & Gas Flowline Fitting

The Ultra-High-Pressure Flange Adapter, 4-1/16" 15M x 3" Fig 1502 Female Thread, is an extreme-duty crossover component expertly engineered to provide a robust, leak-free connection between massive large-bore API 6A flanged assets and high-capacity 3-inch hammer union flowlines. Designed for the most demanding and rigorous upstream oilfield operations, this specialized size-adapting crossover allows operators to safely step down from a large 4-1/16" 15,000 PSI (15M) flanged connection to a standard 3" Figure 1502 female union interface.

Constructed from premium high-integrity forged alloy steel, this crossover adapter easily withstands the severe internal stresses and highly abrasive environments typical of extreme-pressure 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 3-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 high-volume fluid rates.

Serving as a critical pressure-control link, this 15M flange adapter optimizes layout flexibility, safely reducing pipe size across heavy-duty manifold setups and ultra-high-pressure flowline configurations without compromising operational safety or flow capacity.

Features & Benefits

• Seamless Size Transition: Safely bridges a massive 4-1/16" 15,000 PSI API flange with a standard 3" Figure 1502 Female Hammer Union end for versatile, high-capacity piping step-downs.

• 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 3-inch male union components.

• Extreme-Duty Reliability: Maximizes structural strength in high-vibration, ultra-high-pressure systems and accommodates the increased flow rates required in heavy pumping 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 3-inch 1502 female thread hammer union adapter is essential for ultra-high-pressure upstream operations requiring flexible structural crossovers and secure, high-capacity pipe size reductions. Typical applications include stepping down flow from heavy-duty large-bore wellhead tree components, extreme-pressure 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 3-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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