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Danfoss / Eaton Brass Adapter

Description & Features

This Eaton Aeroquip brass adapter is designed for use in grease, refrigeration, instrumentation, and hydraulic systems. Fuel, LP, and natural gas applications are supported on special order.

The Danfoss / Eaton Brass Adapter features Dura-Kote plating for enhanced corrosion resistance and design flexibility. It is a NPTF Female/NPTF Female Union with a 0.25-inch end size on both ends. Minimum working temperature is -65 degrees.

SKU: 3250X4

Supplier Part Number (MPN): 3250X4

Specifications

Application Grease, refrigeration, instrumentation and hydraulic systems. Fuel, LP and natural gas available on special order.	Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	End Gender 1 13553	End Gender 2 13555	End Size 1 0.25	End Size 2 0.25	End Type 1 NPTF	End Type 2 NPTF	Features Dura-Kote plating for superior corrosion resistance\|Design flexibility with hundreds of styles to choose from\|Higher operating pressures above SAE standards	ICC Union Adapters	Item Type NPTF Female/NPTF Female Union	Language English	Minimum Working Temperature -65	Net Pack Quantity Units EA	NMFC 60	Product Material Brass	Product Width 1.06	Sub Brand None	Supplier Part Number 3250X4	Product Weight 0.18 lbs

Product Questions & Answers (3)

Question by: Dwayne W on Jun 5, 2025, 8:02 PM

Will this brass fitting hold up if I'm using it for hydraulics?

Answer by: Customer Support on Jun 7, 2025, 6:42 AM

This Eaton Aeroquip adapter is suitable for hydraulic systems, as well as grease, refrigeration, and instrumentation applications. It's also rated for higher operating pressures than SAE standards require.

Question by: Denise F on Oct 26, 2025, 3:23 PM

got a couple 1/4 NPTF female ports i need to tie together, is this the right kind of union?

Answer by: Customer Support on Oct 28, 2025, 6:24 AM

For connecting two same-size female pipe threads, this is a straight union adapter with 1/4 inch NPTF female on both ends.

Question by: Chad H on Dec 16, 2025, 1:23 PM

both ends are NPTF female on this one, right? just wanna make sure before i order cause i've gotten burned on that before

Answer by: Customer Support on Dec 17, 2025, 6:14 PM

Correct on both counts. Each end is a 1/4 inch NPTF female, making it a union style connection that joins two male NPTF fittings together. The thread form is NPTF, not NPT, so you get a pressure-tight mechanical seal without relying entirely on tape or sealant. Worth double-checking your mating fittings are male NPTF at that same 1/4 inch size and you'll be good to go.