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Danfoss / Eaton Hansen and Gromelle 3946 Auto-Flo 23 Series Plug

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Description & Features

Designed for general pneumatics, air tools, and construction applications, the Danfoss / Eaton Hansen and Gromelle 3946 Auto-Flo 23 Series Plug is a male half quick disconnect coupling built for reliable, tool-free connection and disconnection in demanding service environments. Its push-to-connect end type and ball lock internal mechanism allow fast coupling without requiring special tools, while operating pressures that exceed ISO 16028 standards make it well suited for high-demand pneumatic systems.

Constructed from carbon steel with a Buna-N seal, this plug is rated for use down to -40°F and delivers a flow rate of 209.22 gallons per minute. It meets US Industrial Interchange, ISO 6150 Series B, and A-A-59439 compliance standards. The line/hose/tube end accommodates flexible connections across a range of pneumatic setups, and the Hansen sub-brand designation reflects its compatibility within the broader Eaton Aeroquip coupling family.

SKU: 3946

Supplier Part Number (MPN): 3946

Specifications

Brand
Aeroquip® by Danfoss
Angle Shape
Straight
Connection Size 1
1/4 in
Connection Size 2
1/4 in
Connection Style
Automatic
Connection Type
Hose Stem, Push-Fit
Connection Type 1
Hose Stem
Connection Type 2
Male Push-to-Connect
Dimensions
2.14 in L x 0.47 in W x 0.47 in H
Finish
Zinc-Plated
Fitting Type
Male Half Coupling
For Use With
Compressed Air, Gases and Liquids
Internal Connection Type
Ball Lock
Latch Type
Push/Pull
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-40 to 250 deg F
Safety Locking Mechanism
Pin Lock
Seal Material
Nitrile
Series
210 Series
Thread Sealant
Without Thread Sealant

Product Questions & Answers (2)

Question by: Debbie M on Mar 19, 2026, 11:57 AM
got a Hansen Auto-Flo 23 series coupler on my air line, is this 3946 the right plug half for it?
Answer by: Customer Support on Mar 21, 2026, 10:59 AM
For an Auto-Flo 23 Series quick disconnect setup, the 3946 is the plug side and it is the male half with a ball lock internal connection. It is built to the US Industrial Interchange pattern and ISO 6150 Series B, so it matches that common 23 Series style.
Question by: Bonnie H on Mar 9, 2026, 3:44 PM
Will this plug work with my air tools and general pneumatic applications?
Answer by: Customer Support on Mar 11, 2026, 6:33 AM
Absolutely, this Eaton Aeroquip plug is designed for general pneumatics and air tool applications, and it also suits construction needs.

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