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3" 2,000 PSI Fig 206 Tapped Female Blind Sub (1/2" NPT) – Oil & Gas Hammer Union
3" 2,000 PSI Fig 206 Tapped Female Blind Sub (1/2" NPT) – Oil & Gas Hammer Union
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The 3" Figure 206 Tapped Female Blind Sub with a 1/2" NPT port is a specialized medium-pressure closure fitting designed to cap off the male end of a hammer union while providing an integrated access point for instrumentation. Rated for a Cold Working Pressure (CWP) of 2,000 PSI, the Figure 206 series is a staple in oilfield utility and production services, featuring a secondary O-ring seal for enhanced leak prevention in systems carrying air, water, oil, or gas.
Manufactured from high-strength forged steel, this female blind features precision-machined Acme threads to mate with standard 3" Fig 206 male subs. The 1/2" National Pipe Thread (NPT) tap centered in the hub allows operators to install pressure gauges, transducers, or small-bore bleed-off valves directly into the terminal point of the line. This allows for real-time pressure monitoring and safe depressurization of the isolated section before the hammer union is broken, significantly increasing operational safety.
Built for durability and field-tested reliability, the 3" 206 Tapped Female Blind ensures a robust, blowout-proof seal and simplified manifold management in standard-duty oilfield applications.
Features & Benefits
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Integrated 1/2" NPT Tap: Provides a secure connection point for pressure monitoring, sampling, or controlled venting of trapped line pressure.
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2,000 PSI CWP Rating: Engineered for reliable performance in medium-pressure water transfer, air, and production systems.
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Secondary O-Ring Sealing: Designed to mate with O-ring equipped male subs to ensure a bubble-tight seal even under vibration.
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Forged Steel Construction: High-tensile material offers excellent resistance to mechanical shock and environmental wear.
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Precision Acme Threads: Ensures smooth engagement and high-torque reliability for fast field make-up and break-out.
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Safety & Versatility: Enables operators to verify pressure levels before disconnecting lines, reducing the risk of hazardous blowouts.
Specifications & Technical Details
| Category | Specification |
| Component Type | Tapped Blind Sub / Hammer Union Cap |
| Figure Number | Figure 206 |
| Size | 3" |
| Pressure Rating | 2,000 PSI CWP (2M) |
| End Connection | 3" Fig 206 Female (Threaded Hub) |
| Tap Size | 1/2" Female NPT |
| Material | High-Strength Forged Steel |
| Service Type | Standard Service (Air, Water, Oil, Gas) |
| Typical Applications | Utility manifolds, water transfer, pressure monitoring ports |
| Testing & Compliance | Dimensional verification and thread gauging to industry standards |
Applications
This 3" Figure 206 tapped female blind sub is essential for medium-pressure operations requiring instrumentation access at a flowline termination. Typical uses include mounting pressure gauges on water transfer manifolds, installing bleed-off valves on utility air lines, and providing a sensor port on production gathering systems where 2,000 PSI containment is required.
Quality Assurance
Each tapped female blind sub is manufactured under strict quality control protocols. The fitting undergoes precise dimensional inspection, thread gauging, and material verification to ensure absolute interchangeability with standard 3" Fig 206 hammer unions and reliable leak-free performance under rated field pressures.
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