3" 15,000 PSI Fig 1502 Autoclave Tapped Male Blind Sub with Wing Nut (9/16") – Oil & Gas Flowline Fitting

The 3" Figure 1502 Autoclave Tapped Male Blind Sub with Wing Nut and a 9/16" Autoclave port is a highly specialized, extreme-pressure closure assembly. Engineered to securely cap off and isolate female threaded hubs, it provides an ultra-secure access point for critical instrumentation. Rated for a Cold Working Pressure (CWP) of 15,000 PSI, this heavy-duty blind is an essential component for well testing, hydraulic fracturing, and flowback operations where real-time pressure monitoring of hazardous fluids and gases demands absolute precision and safety.

Manufactured from premium high-strength forged alloy steel, this complete assembly includes the precision-machined male blind sub (featuring the elastomeric seal groove) and the heavy-duty Figure 1502 wing nut. The distinguishing feature of this component is the 9/16" Autoclave (coned-and-threaded) tap located in the center of the blind sub. Unlike standard NPT threads, the Autoclave connection provides a superior metal-to-metal seal that is highly resistant to extreme vibration, intense pressure cycling, and blowout risks. This makes it the industry standard for mounting high-pressure gauges, transducers, and chemical injection lines.

Built to endure abrasive frac fluids and severe mechanical shock, the 3" 1502 Autoclave Tapped Male Blind Sub ensures maximum safety and operational flexibility. By allowing operators to safely monitor trapped pressure or bleed off lines prior to breaking the hammer union connection, this assembly is a vital safeguard in demanding upstream environments.

Features & Benefits

• 9/16" Autoclave Port: Provides a highly secure, coned-and-threaded connection for extreme-pressure instrumentation and sensors.

• Complete Assembly: Comes fully equipped with the male blind sub and heavy-duty wing nut for immediate field deployment.

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

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

• Superior Sealing Integrity: The metal-to-metal Autoclave seal far exceeds the vibration and pressure retention capabilities of standard tapered threads.

• Standard Interchangeability: Fully compatible with all industry-standard 3" Figure 1502 female threaded hubs.

Specifications & Technical Details

Applications

This 3" Autoclave tapped male blind sub with wing nut is strictly required for operations demanding extreme-pressure instrumentation access. Typical uses include mounting highly sensitive pressure transducers on frac manifolds, installing chemical injection lines, providing a secure bleed-off point for high-pressure well-testing lines, and monitoring pump discharge headers where severe vibration is present.

Quality Assurance

Each Autoclave tapped blind sub is manufactured under rigorous quality control protocols. The coned-and-threaded port and main body undergo 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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