Skip to the beginning of the images gallery

Brass Compression Fitting For Copper & Aluminum Tubing, 0.75 Inch Tube OD To 3/4-14 Male NPT

Description & Features

This brass compression fitting is engineered for copper and aluminum tubing with a 0.75-inch tube OD and a 3/4-14 NPT thread. Its robust brass construction ensures long-lasting durability and reliability across various industrial applications.

Designed by ACR Industries this fitting is suitable for air oil and water environments and can also be used in vacuum service. The fittings easy-to-assemble design eliminates the need for flaring making installation straightforward and efficient.

It offers a pressure rating of 188 PSI with a 4:1 safety factor for 3/4 to 1 tubing sizes and operates effectively within a temperature range of -65F to 250F. This fitting is not recommended for steel tubing but works seamlessly with copper and aluminum.

MPN: 268X12X12

Supplier Part Number: 268X12X12

Specifications

Brand ACR Industries	Connection Size 1 3/4 in	Connection Type MNPT	Connection Type 1 Male NPT	Dimensions 1-1/2 in L	Fitting Type Compression Fitting Assembly	For Use With Copper and Aluminum Tubing	Material Brass	Material Construction Brass	Sg Pressure Rating 1/8 in to 1/4 in Tubing Sizes: 500 psi with 4:1 Safety Factor (2000 psi Burst), 5/16 in to 1/2 in Tubing Sizes: 250 psi with 4:1 Safety Factor (1000 psi Burst), 3/4 in to 1 in Tubing Sizes: 188 psi with 4:1 Safety Factor (750 psi Burst)	Thread 1 3/4-14

Product Questions & Answers (3)

Question by: Lee A on Apr 17, 2025, 1:23 PM

Been using copper lines on a compressor setup and need a fitting that'll go straight to a male NPT port without flaring the tube. This one do the job for 3/4 inch OD copper?

Answer by: Customer Support on Apr 19, 2025, 12:15 PM

For 3/4 inch OD copper tubing connecting to a 3/4-14 male NPT port, that's exactly what this fitting handles. No flaring needed on your end either. The compression design does the sealing work, so you're just sliding the tube in and tightening down. It's rated for air service, so a compressor application fits right in its wheelhouse.

Question by: Tommy H on Jun 7, 2025, 10:06 AM

How difficult is it to put one of these fittings on aluminum tubing, seeing as how it doesn't need any flaring?

Answer by: Customer Support on Jun 9, 2025, 8:42 AM

These compression fittings are engineered to be pretty straightforward; the design eliminates the need for flaring, making the installation process simpler, especially on softer metals like aluminum.

Question by: Glen M on Nov 11, 2025, 10:52 AM

got 3/4 inch copper tube, will this fitting hook me up to a 3/4-14 male NPT port without having to flare the line?

Answer by: Customer Support on Nov 12, 2025, 6:40 PM

For a 0.75 inch tube OD in copper or aluminum, it gives you a compression connection on the tube side and a 3/4-14 male NPT thread on the other side. It is made to assemble without flaring, so you do not have to flare the tubing to install it.