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Brass Push-In Tube Fitting, 0.25 Tube OD to 1/4-18 Male NPT Swivel, Branch Tee

Description & Features

Constructed with durable brass this push-in tube fitting is designed for seamless quick connect and disconnect. The fitting offers a positive seal ensuring no leaks aided by Buna-N O-rings. It includes pre-applied Teflon based pipe sealant on all male threads enhancing its reliability. Suitable for use with polyurethane polybutylene and soft metal tubing it supports a wide range of industrial applications. The fitting's design incorporates an interior hex for Allen key tightening providing easy and secure installation.

MPN: AQ72-PS-4X4

Supplier Part Number: AQ72-PS-4X4

The full flow design ensures optimal efficiency accommodating a temperature range from -10F to 200F and suitable for vacuum service. This branch tee fitting includes a stationary or swivel option for elbows and tees providing flexibility in various setups. When the tubing is inserted into the fitting the gripping teeth secure it while the O-ring ensures a leak-proof seal. The fitting is capable of handling the maximum working pressure of the thermoplastic tubing used.

Specifications

A 1.04	B 0.91	D 1.33	Brand Alkon Corp	Brand Alkon Corp	Pack Size 1.00	UOM EA	Supplier Part Number AQ72-PS-4X4	Thread 1 1/4-18	Tube O.D. 0.25	Tube O.D. 0.25	Alternate Part Numbers Alternate Part Number C1CK50, Alternate Part Number MI-01541563, Alternate Part Number MINO-00034Q13400	Product Weight 0.10 lbs

Similar Products

Model Number	Tube O.D.	Thread 1	A	B	D	Price	Action
AQ72-PS-4X4 Brass Push-In Tube to Male NPT Tee	0.25	1/4-18	1.04	0.91	1.33
AQ72-PS-6X4 Brass Push-In Tube to Male NPT Tee	0.38	1/4-18	1.1	0.97	1.45

Product Questions & Answers (1)

Question by: Chad C on Feb 23, 2026, 9:33 PM

Does this fitting work with polyurethane tubing, or is it only for metal lines?

Answer by: Customer Support on Feb 25, 2026, 6:57 AM

Polyurethane tubing is actually one of the primary uses for this fitting, as long as it's 90 durometer or higher. Polybutylene and soft metal tubing are also compatible. Just push the tube in and the internal gripping teeth lock it in place while the Buna-N O-ring seals against the outside diameter of the tube. No tools needed for the tubing connection itself, though straight connectors do have an interior hex if you need to tighten with an Allen key.