4" 10,000 PSI Fig 1002 Threaded Female Blind Sub – Oil & Gas Flowline Fitting

The 4" Figure 1002 Threaded Female Blind Sub is a high-capacity, heavy-duty closure fitting engineered to securely cap off and isolate the male end of a hammer union connection. Rated for a Cold Working Pressure (CWP) of 10,000 PSI, the Figure 1002 series is a standard for high-pressure flowlines, well-testing manifolds, and stimulation equipment where robust fluid containment and structural integrity are paramount.

Manufactured from premium forged alloy steel, this female blind features the precision-machined external Acme threads characteristic of the Figure 1002 union. It is designed to mate perfectly with a 4" 1002 male sub, utilizing the assembly's wing nut to pull the sealing surfaces together for a blowout-proof, leak-free seal. This threaded female blind provides a safe and immediate termination point, allowing rig crews to isolate pressurized sections of a manifold or flowline for maintenance, reconfiguration, or pressure testing without disrupting the entire system.

Built to withstand severe mechanical shock, high-velocity vibration, and the erosive nature of abrasive oilfield fluids, the 4" 1002 Female Blind Sub ensures maximum safety and reliable performance in demanding upstream applications.

Features & Benefits

• 10,000 PSI CWP Rating: Engineered to safely contain high pressures in critical well-servicing and flowback environments.

• Forged Alloy Steel Construction: Delivers exceptional structural strength and resistance to fatigue, impact, and internal erosion.

• Precision Acme Threads: Features industry-standard threads for smooth, reliable engagement with 4" Figure 1002 wing nuts.

• Positive Isolation: Provides a secure, blowout-proof dead-end for 4-inch high-pressure fluid and gas lines.

• Standard Interchangeability: Fully compatible with all industry-standard 4" Figure 1002 male subs and wing nut assemblies.

• Field Efficiency: Enables rapid rig-up and secure flowline termination during fast-paced well-site operations.

Specifications & Technical Details

Applications

This 4" Figure 1002 threaded female blind sub is essential for operations requiring secure high-pressure flowline termination. Typical uses include capping off unused branches on well-testing manifolds, dead-ending high-volume flowlines, and securing pump discharge headers during stimulation and fracturing support 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 10,000 PSI operational loads.

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