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Capitol AAR-112-3M 1-1/2″ NPT Forged Steel Union 3000 PSI Pipe Fitting Gas LP

SKU: AAR-112-3M
Weight 2 lbs
Dimensions 15 × 10 × 3 in

$78.07

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing
QuantityUnit priceSaving
1–4$78.070%
5–9$74.175%
10+$70.2610%

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Product details & buying advice

Compare connection sizes and material ratings separately when building a steel or iron piping order.

Product type Steel and iron pipe fittings
Part / SKU AAR-112-3M

What to check before ordering

  • Identify each connection and distinguish pipe schedule or weight from forged-fitting class.
  • Check length, end configuration and the applicable pressure-temperature and service ratings.
  • Use approved joint preparation, followed by the required checks by qualified gas personnel.

Service reminder: Pipe schedule and fitting class describe different characteristics. Neither is a stand-alone pressure rating for an entire gas system.

Have gas-system installation and service completed by qualified personnel. Use the current instructions for the exact model and the requirements that apply at the installation location.

Product help & manufacturer resources

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Overview

The Capitol AAR-112-3M Forged Steel Union is a 1-1/2" NPT female pipe fitting rated at 3000 PSI, engineered for high-pressure propane, LP, and natural gas piping systems. Forged from heavy-duty steel, this union fitting ensures a leak-resistant, secure connection while allowing easy disassembly for system maintenance or modifications.

Applications

Propane and LP bulk plant systemsNatural gas distribution pipingHigh-pressure industrial pipelines and compressed air systemsInstallations requiring reliable pipe joining with convenient access for future serviceKey Features1-1/2" NPT Female Threads – Industry standard for versatile compatibility3000 PSI Pressure Rating – Meets heavy-duty system requirementsForged Steel Construction – Superior durability and strength for industrial useUnion Fitting Design – Allows fast and easy disassembly for system access and repairsSafe & Reliable – Designed for propane, LP gas, natural gas, and compressed airSpecifications

Manufacturer: Capitol

Part Number: AAR-112-3M

Size: 1-1/2" NPTPressure Rating: 3000 PSI

Material: Forged Steel

Condition

Brand NewThis Capitol forged steel union fitting is a dependable choice for technicians, installers, and industrial operators working in high-pressure propane and natural gas environments.

Product details

Part / SKU AAR-112-3M

Package includes

  • Capitol AAR-112-3M 1-1/2" NPT Forged Steel Union 3000 PSI Pipe Fitting Gas LP

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

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