Coilhose 140 ARO Coupler, 1/4 In. FPT

Description

Coilhose 140 coupler is a 1/4 inch ARO interchange air-line coupler with 1/4 inch female pipe thread for pneumatic hose, tool, and bench air setups. The brass coupler body fits shops that standardize around ARO style quick-connect hardware and need a small replacement fitting for compressed-air service.

Coilhose 140 coupler Applications

• Compressed-air drops using 1/4 inch ARO interchange fittings.
• Tool benches where hoses connect and disconnect during daily work.
• Maintenance kits for fabrication, installation, and service teams.
• Replacement of worn or damaged female-thread couplers.
• Shop air layouts that separate ARO, industrial, automotive, and Lincoln patterns.

Confirm the interchange pattern before installing the coupler. ARO, industrial, automotive, and Lincoln fittings can look similar, but mismatched couplers and plugs may leak, fail to seat, or disconnect poorly. Match both the body size and the thread connection before putting the air line back in service.

Coilhose 140 coupler Installation Notes

Inspect the male pipe thread for damage and remove old sealant before assembly. Apply a thread sealant suited for compressed air, then tighten the coupler without overloading the fitting body. After installation, pressurize the line slowly and check the joint with a leak-detection method approved for the shop.

This fitting is a good bench-stock item because air tools move between stations and small couplers see repeated handling. Keeping matching plugs, connectors, and hose parts nearby helps maintenance teams repair a line without mixing interchange styles.

Use the coupler on the supply side of the connection where a female-thread body is needed. It can be installed at a hose end, manifold, regulator, or drop point when the mating connector and pressure setup match the existing shop standard. Label bins by interchange pattern so repair crews do not mix similar looking quick-connect parts during a line-down repair.

During routine checks, listen for leakage at the sleeve and thread joint. A damaged connector can make a good coupler seem faulty, so inspect both halves before replacing parts. If the sleeve sticks or the coupler no longer locks cleanly, remove it from service and replace it with the same model or a fully compatible ARO part.

Coilhose 140 coupler Specifications

For related fittings and shop hardware, browse hardware. Current manufacturer information is available from Coilhose Pneumatics.

Need Help?

Need help matching an ARO coupler to plugs, hoses, or tool connections? Call (800) 220-1966 or email [email protected].