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Union Tee

Description & Features

Constructed from brass, this Eaton Aeroquip Union Tee is designed for use in instrumentation, hydraulic, and pneumatic systems where a reliable three-way tube connection is required. Two ends accept 5/16 in. line or hose tube connections, while the third is a 1/2 in. SAE male fitting, giving it flexibility across mixed-size circuit configurations.

Dura-Kote plating provides corrosion resistance suited to demanding service environments, and the fitting is rated to operate at pressures above standard SAE thresholds. A minimum working temperature rating of -65°F makes it suitable for cold-environment applications. As part of Aeroquip's broad adapter range, this tee is available within a product family offering hundreds of fitting styles to support varied system layouts.

SKU: 641X5

Supplier Part Number (MPN): 641X5

Specifications

Alternate Part Numbers Alternate Part Number MINO-00015X07403	Application Other - Instrumentation, hydraulic, and pneumatic systems	Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	End Gender 3 13558	End Size 1 0.31	End Size 2 0.31	End Size 3 0.50	End Type 1 Line/Hose/Tube	End Type 2 Line/Hose/Tube	Features Dura-Kote plating for superior corrosion resistance\|Design flexibility with hundreds of styles to choose from\|Higher operating pressures above SAE standards	Hex Size 2 0.56	ICC Tee/Y Adapters	Item Type Line/Hose/Tube /Line/Hose/Tube /SAE Male Tee Adapter	Language English	Minimum Working Temperature -65	Net Pack Quantity Units EA	NMFC 60	Product Material Brass	Product Width 0.11	Sub Brand None	Supplier Part Number 641X5	Product Weight 0.11 lbs

Product Questions & Answers (2)

Question by: Daryl M on Apr 15, 2025, 4:16 PM

Will this tee work for connecting lines in a hydraulic system?

Answer by: Customer Support on Apr 17, 2025, 11:52 AM

It's designed for instrumentation, hydraulic, and pneumatic systems, so it should work for hydraulic lines.

Question by: Curt E on Mar 12, 2026, 4:02 PM

what's the difference in size between the two line ends and the third port on this tee? trying to figure out if it'll work in my setup before I order.

Answer by: Customer Support on Mar 14, 2026, 6:56 AM

Two of the ports are 5/16 inch and the third port runs at 1/2 inch, so you've got a reducing configuration rather than a straight equal-size tee. That size difference matters when you're routing flow from a larger line into two smaller ones, or combining two smaller feeds into a single half-inch run. Worth mapping that out against your existing fittings before pulling the trigger.