• 9/16" HP male x 1/2" NPT female adapter 10K PSI 316 stainless steel fitting for high pressure oilfield flowline and hydraulic systems, API compatible integral fitting supplier USA
  • 9/16" HP Male x 1/2" NPT Female Adapter – 10,000 PSI Stainless Steel Crossover Fitting
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9/16" HP Male x 1/2" NPT Female Adapter – 10,000 PSI Stainless Steel Crossover Fitting

9/16" HP Male x 1/2" NPT Female Adapter – 10,000 PSI Stainless Steel Crossover Fitting

$40.00 USD
$48.00 USD $40.00 USD
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The 9/16" High-Pressure (HP) Male x 1/2" NPT Female Adapter is a robust crossover fitting engineered to seamlessly connect ultra-high-pressure coned and threaded tubing systems to standard, larger-bore pipe thread instrumentation. Rated for a Maximum Allowable Working Pressure (MAWP) of 10,000 PSI (10K)—the standard safe operational limit for a 1/2" NPT connection—this adapter allows operators to safely transition between rigid high-pressure manifolds and widely available tapered-thread equipment.

One end features a precision-machined 9/16" High-Pressure (HP) Male connection, utilizing the industry-standard Autoclave-style coned and threaded design to provide a blowout-proof, bubble-tight metal-to-metal seal. The opposing end features a robust 1/2" National Pipe Thread (NPT) Female port, designed to accept larger instrumentation such as heavy-duty pressure gauges, pulsation dampeners, and high-volume bleed valves. By providing a direct transition, this single-piece fitting eliminates the need for multi-component thread bushings, significantly reducing potential leak paths.

Manufactured from premium cold-worked 316 stainless steel, this adapter delivers exceptional tensile strength and superior resistance to corrosive fluids, harsh offshore environments, and mechanical fatigue, ensuring reliable fluid containment and system integrity.

Features & Benefits

  • 10,000 PSI MAWP Rating: Safely contains high pressures up to 10K PSI, intelligently limited to the maximum safe operating threshold of the 1/2" NPT threaded connection.

  • Crossover Functionality: Direct transition from Autoclave-style high-pressure rigid tubing systems to universally available 1/2" NPT threaded instrumentation.

  • Autoclave-Style HP Connection: Features a standard coned and threaded interface for a highly reliable metal-to-metal seal on the 9/16" HP side.

  • Large-Bore 1/2" NPT Port: Enables the secure mounting of heavy-duty pressure gauges, transmitters, and larger-volume flow components.

  • Cold-Worked 316 SS Construction: Delivers high structural integrity alongside exceptional resistance to chemical attack, rust, and sour gas (H2S).

  • Reduced Leak Paths: A solid, single-piece machined design minimizes equipment complexity and enhances overall system safety.

Specifications & Technical Details

Category Specification
Component Type Straight Crossover Adapter
End Connection 1 9/16" High Pressure (HP) Male – Cone & Thread
End Connection 2 1/2" NPT (National Pipe Thread) Female
Maximum Working Pressure 10,000 PSI (10K MAWP) – NPT Limited
Material Cold-Worked 316 Stainless Steel (SS)
Seal Type Metal-to-Metal (HP End) / Tapered Thread (NPT End)
Service Type Standard and Corrosive Service
Typical Applications Gauge mounting, test panels, chemical injection skids
Testing & Compliance Strict dimensional verification and material traceability

Applications

This 9/16" HP x 1/2" NPT female adapter is primarily utilized for stepping down from ultra-high-pressure lines to mount larger standard pressure monitoring equipment. Typical applications include installing 1/2" NPT analog gauges or heavy-duty electronic transmitters on hydrostatic test benches, attaching pulsation dampeners to pump discharge manifolds, and routing fluids into standard pipe-threaded distribution manifolds.

Quality Assurance

Each adapter is CNC-machined to exacting tolerances under rigorous quality control standards. The 9/16" HP coned seating surface undergoes strict visual and dimensional gauging to ensure flawless metal-to-metal engagement, while the NPT threads are precisely cut and gauged to prevent galling and ensure a leak-proof interference fit. All 316 SS materials are fully traceable, guaranteeing safe and reliable performance at up to 10,000 PSI.

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