3" 15,000 PSI Fig 1502 Threaded Female Blind Sub – Oil & Gas Flowline Fitting

The 3" Figure 1502 Threaded Female Blind Sub is a heavy-duty, high-pressure closure fitting engineered to securely cap off and isolate the male end of a hammer union connection. Designed for extreme oilfield environments, this blind sub is rated for a Cold Working Pressure (CWP) of 15,000 PSI, making it an essential component for dead-ending flowlines, well-testing configurations, and hydraulic fracturing manifolds where absolute fluid containment is required.

Manufactured from premium forged alloy steel, this female blind features the standard Figure 1502 heavy-duty Acme threaded hub. It is designed to perfectly mate with a 3" 1502 male sub, utilizing the assembly's wing nut to draw the two halves together for a blowout-proof, metal-to-metal and elastomeric seal. By providing a safe and immediate termination point, this threaded female blind allows rig crews to confidently isolate pressurized sections of a manifold for maintenance or operational reconfiguration without depressurizing the entire system.

Built to withstand abrasive fluids, severe mechanical shock, and high-velocity pulsation, the 3" 1502 Female Blind Sub ensures maximum safety and structural integrity in demanding upstream applications.

Features & Benefits

• 15,000 PSI CWP Rating: Specifically engineered to safely contain extreme pressures in critical well-control and stimulation environments.

• Forged Alloy Steel Construction: Delivers superior structural strength, resisting fatigue, mechanical impact, and internal erosion.

• Threaded Female Hub: Features precision-machined Acme threads to seamlessly accept a standard 3" Fig 1502 wing nut.

• Positive Isolation: Provides a secure, blowout-proof dead-end for high-pressure fluid and gas lines.

• Standard Interchangeability: Fully compatible with all industry-standard 3" Figure 1502 male subs and wing nut assemblies.

• Rapid Field Deployment: Allows for fast make-up and break-out during fast-paced rig-up and manifold adjustments.

Specifications & Technical Details

Applications

This 3" Figure 1502 threaded female blind sub is essential for operations requiring rapid and secure high-pressure flowline termination. Typical uses include capping off unused branches on frac manifolds, dead-ending well-testing lines, and securing high-pressure pump discharge headers during stimulation operations.

Quality Assurance

Each female blind sub is manufactured under rigorous quality control protocols. The fitting undergoes precise dimensional inspection, thread gauging, and non-destructive examination (NDE) to guarantee absolute structural integrity and reliable blowout-proof performance under maximum 15,000 PSI operational loads.

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