3" 15,000 PSI Fig 1502 Positive Choke Blind Assembly with 1/2" Tap – Oil & Gas Flowline Fitting

The 3" Figure 1502 Positive Choke Blind Assembly with a 1/2" Tap is a specialized, high-pressure closure unit designed for the secure isolation of flowlines and manifolds while providing a dedicated port for instrumentation or pressure relief. Rated for a Cold Working Pressure (CWP) of 15,000 PSI, this assembly is engineered for extreme-service applications such as well testing, hydraulic fracturing, and flowback operations.

The defining feature of this assembly is the precision-machined 1/2" NPT tap centered in the blind plug. This port allows operators to install pressure gauges, transducers, or needle valves directly into the isolated section, enabling real-time pressure monitoring or safe bleed-off of trapped gases and fluids before disassembly. The complete unit consists of the forged alloy steel blind plug, a heavy-duty Figure 1502 wing nut, retainer segments, a retainer ring, and a high-performance elastomeric seal for bubble-tight containment.

Built to withstand abrasive fluids and severe mechanical vibration, the 3" 1502 Tapped Blind Assembly ensures maximum safety and operational flexibility when configuring complex high-pressure manifolds.

Features & Benefits

• Integrated 1/2" NPT Tap: Provides a secure connection point for pressure monitoring gauges, sampling equipment, or bleed-off valves.

• 15,000 PSI CWP Rating: Engineered to safely handle extreme pressures in critical upstream well-control environments.

• Forged Alloy Steel Construction: Delivers exceptional structural integrity and resistance to mechanical impact and fatigue.

• Complete Assembly: Supplied with the blind plug, wing nut, segments, and seal for immediate, drop-in field use.

• Positive Sealing: Utilizes a pressure-energized elastomeric seal to prevent hazardous leaks under maximum operational loads.

• Standard Interchangeability: Fully compatible with all industry-standard 3" Figure 1502 hammer union connections and choke bodies.

Specifications & Technical Details

Applications

This 3" tapped blind assembly is essential for high-pressure operations requiring instrumentation access or controlled venting. Typical applications include monitoring pressure on dead-ended branches of a frac manifold, installing bleed-off valves on well-testing lines, and providing a sampling port on high-pressure flowline termination points.

Quality Assurance

Each assembly is manufactured under rigorous quality control standards. The tapped port and main body undergo precise dimensional inspection and non-destructive examination (NDE) to guarantee absolute structural integrity and leak-free performance under 15,000 PSI field conditions.

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