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Danfoss / Eaton Cplng HK Series

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Description & Features

This Danfoss / Eaton Cplng HK Series plug is constructed of carbon steel with Buna-N seals for compatibility with a range of hydraulic fluids. This male half quick disconnect coupling features a push-to-connect design and a sleeve lock safety mechanism.

Designed for oil and gas applications, it exceeds ISO 16028 operating pressures and features a 2-way valve type. The quick connect and disconnect design requires no special tools. This coupling offers a 7.5 gallons per minute flow rate and can function in minimum working temperatures as low as -40 degrees.

SKU: 4KFR26

Supplier Part Number (MPN): 4KFR26

Specifications

Brand
Aeroquip® by Danfoss
Connection Size 1
1/2 in
Connection Size 2
1/2 in
Connection Style
Manual
Connection Type
FNPT
Connection Type 1
Female NPTF
Connection Type 2
Female NPTF
Dimension Standards
ISO 7241-1 Series B
Dimensions
2.03 in L
Finish
Zinc Trivalent
Fitting Type
Coupling
Fluid Compatibility
Hazardous Oil and Gases
Hex Size
1.13 in
Latch Type
Push/Pull
Material
Steel
Material Construction
Carbon Steel
Maximum Operating Pressure
7000 psi
Operating Temperature
-40 to 250 deg F
Safety Locking Mechanism
Sleeve Lock
Seal Material
NBR
Segment Code
C
Series
HKFR Series
Thread Size
1/2-14
Valve Type
2-Way

Product Questions & Answers (1)

Question by: Dean J on Jan 24, 2026, 7:03 AM
Will this quick connect work with regular hydraulic fluid, or do I need something special?
Answer by: Customer Support on Jan 25, 2026, 5:09 PM
This Danfoss/Eaton HK series plug is constructed of carbon steel with Buna-N seals, making it compatible with a range of hydraulic fluids. Be sure to check the manufacturer's fluid compatibility document to verify suitability for your particular application.

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