Goraguchi FX-747 Brass Compression Tee, 5/16 in OD x 1/4 in NPT

Goraguchi FX-747 is a brass compression tee listed for 5/16-inch tube connections and a 1/4-inch NPT male branch. Its claimed 150 PSI maximum working pressure and five-piece pack suit buyers matching those specific fitting dimensions and line requirements.

At a glance

Compression connections are described as sealing and fastening through a threaded, interlocking compression ring.
The listing names fuel, air, liquid, oil, gas and vacuum lines as application scenarios.
The stated temperature range and pressure ceiling are listing claims, not independently verified performance.

Price

$7.99Save 50%

Reference price: ~~$15.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Five fittings are listed in the package, useful when several matching tee connections are needed.
The two 5/16-inch tube ends and 1/4-inch NPT branch are clearly specified in the size listing.

Technical specifications

11 specifications

Identity
Brand	Goraguchi
Model	FX-747

Connection and use
Listed size	5/16"OD x 1/4"NPT x 5/16" OD
Connector type	Tee
Thread size	1/4 inch
Thread type	NPT
Number of fittings	5
Maximum working pressure	150PSI
Temperature range	-65℉-250℉

Materials and dimensions
Material listed	Brass
Dimensions listed	2.1 x 0.64 x 1.11 inches

What to know before buying

Listing details to confirm

The listing also describes this tee as a compression union connector and gives a second size in its description as 5/16" OD x 1/4" MNPT x 5/16" OD, while the title and size field specify 1/4" NPT male. Confirm the required branch thread and fitting configuration before purchase. The stated pressure and temperature limits are manufacturer claims. NPT dimensions are nominal, not actual diameter.

Who is it for?

A good fit for

Buyers connecting two 5/16-inch OD tubes to a 1/4-inch NPT male branch, after confirming the thread and fitting arrangement.
Applications matching the listing's stated fuel, air, liquid, oil, gas or vacuum line uses and operating limits.

Less suited to

Buyers whose tubing OD, thread type or branch size does not match the listed connections.
Systems requiring verified compatibility or pressure and temperature performance beyond the stated listing claims.

Goraguchi FX-747 Brass Compression Tee, 5/16 in OD x 1/4 in NPT · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 5 ratings

5 stars68%68%
4 stars32%32%
3 stars0%0%
2 stars0%0%
1 star0%0%

Aggregate ratings lean positive, with ratings in the four- and five-star categories, but the sample is small and no written feedback is supplied. The ratings do not identify customer experiences with fit, sealing or the stated operating limits, so they offer little guidance on compatibility beyond checking the listed dimensions.

Frequently asked questions

What connection sizes are listed?

The size field lists 5/16-inch OD tube ends and a 1/4-inch NPT branch. The description uses the term MNPT, so verify the branch specification against your system.

How many fittings are included?

The package claim says five brass compression tube tee fittings.

What pressure and temperature limits does the listing state?

It claims a maximum working pressure of 150 PSI and a temperature range of -65℉-250℉. These are listing specifications, not independently verified results.

What lines does the listing identify for use?

It names fuel, air, liquid, oil, gas and vacuum lines. Confirm the fitting materials and operating requirements are suitable for your particular system.