Steel Metric Flareless Fitting, 20.00 mm S Series Union

Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	Maximum Operating Pressure 420	Series S	Supplier Part Number WAL037859	Tube O.D. 20	Tube O.D. 20	Alternate Part Numbers Alternate Part Number C1KW91	Product Weight 0.32 lbs

Product Questions & Answers

Will this union fitting work with standard steel tubing?

Question by: Bobby F on Nov 26, 2025, 2:29 PM

This Eaton Aeroquip union is designed for use with metric flareless tubing, specifically with a 20.00 mm S Series connection.

Answer by: Customer Support on Nov 27, 2025, 3:20 PM

Model Number	Tube O.D.	Series	Maximum Operating Pressure
WAL037858	16	S	630
WAL037860	25	S	420
WAL037861	30	S	420
WAL037850	10	L	500
WAL037856	12	S	630
WAL037859	20	S	420
WAL373366	15	L	400
WAL373367	18	L	400