Midland Industries 23300X6 Brass Sae Pipe Coupling 3/8 Nptf

Product Description

The MIDLAND INDUSTRIES 23300X6 is a straight pipe coupling machined from brass and manufactured to SAE pattern dimensions. It joins two female NPTF threaded connections, each sized at 3/8 inch, creating a leak-resistant union in hydraulic, pneumatic, and general fluid-transfer lines. The coupling measures 1.12 inches in length with a 0.87-inch hex for standard wrench engagement. It is rated to 1200 psi and handles temperatures from -65 to 250 degrees F. Plumbers, pipefitters, and HVAC technicians install this coupling when extending or repairing pipe runs that terminate in NPTF male threads.

This coupling is suited for residential and light commercial applications where brass fittings are specified. Typical install scenarios include compressed air lines, water supply branches, fuel lines, and hydraulic circuits. The NPTF thread form provides a dry-seal connection that reduces reliance on thread sealant, though most installers apply PTFE tape or paste compound as a secondary measure. The 3/8-18 thread pitch is a standard size found across a wide range of piping assemblies in mechanical rooms, equipment skids, and utility connections.

Key Features

• Dual 3/8 in female NPTF connections for dry-seal, pressure-rated unions
• 1200 psi pressure rating suitable for hydraulic and compressed-air service
• Operating temperature range of -65 to 250 degrees F
• 0.87 in hex flat allows engagement with standard open-end or adjustable wrenches
• Brass construction resists corrosion in water, fuel, and air service
• SAE pattern dimensions for drop-in replacement in SAE-specified assemblies

Compatibility

Designed for use with brass, bronze, copper, steel, aluminum, and iron pipe carrying the 3/8-18 NPTF thread form.

Installation Notes

Installation is performed by licensed plumbers, pipefitters, or qualified HVAC technicians following applicable IPC or IFGC guidelines for the fluid being conveyed. Shut off and depressurize the line completely before removing or installing any fitting. Use an appropriately sized wrench on the hex flat and avoid over-tightening, which can crack the fitting body or distort the thread. Inspect mating threads for damage or contamination before assembly.