Anderson Metals 756303-04 Heavy-duty Coupling Fnpt Brass

Product Description

The ANDERSON METALS 756303-04 is a heavy-duty pipe coupling machined from lead free brass, designed for permanent inline connections in pressurized fluid and gas piping systems. Rated to 1,000 psi maximum working pressure, it accepts 1/4-18 female NPT threads on both ends, creating a reliable FNPT x FNPT joint. At 0.09 pounds, the fitting is compact and suited for tight-access installations. Its lead free construction meets regulatory requirements for potable water service. Licensed plumbers, pipefitters, and HVAC technicians are the typical installers for this type of fitting in both residential and light commercial applications.

This coupling is rated for use with potable water, grease, fuels, LP gas, and natural gas, making it a versatile choice across plumbing, fuel gas, and HVAC service work. The 1/4-18 NPT thread size is common in instrument lines, gas appliance connections, pressure gauge ports, and small-bore service piping. The 3/4-inch hex profile accommodates standard open-end and adjustable wrenches for installation without specialized tooling.

Key Features

• Lead free brass construction meets potable water compliance requirements
• 1,000 psi maximum working pressure for demanding service conditions
• FNPT x FNPT connection on both ends for inline coupling of male-threaded pipe or fittings
• 1/4-18 NPT thread size fits common instrument, gas, and small-bore plumbing lines
• 3/4-inch hex size allows standard wrench installation
• Rated for potable water, grease, fuels, LP gas, and natural gas service

Compatibility

Rated for use with potable water, grease, fuels, LP gas, and natural gas piping systems. Suitable as an inline coupling wherever 1/4-18 FNPT connections are required in pressurized pipe runs.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable local codes, IPC, and IFGC requirements. Shut off supply pressure and depressurize the line before removing or installing any fitting. Apply an appropriate thread sealant or PTFE tape to the male threads being joined — do not apply sealant inside the female threads of this coupling. Tighten to snug plus a controlled number of turns per NPT standard practice; overtightening brass fittings can crack the hex or distort threads.