Cplng HK Series Plug Brass

Description & Features

Constructed from brass with FKM seals, the Cplng HK Series Plug Brass is a male half quick disconnect coupling designed for reliable fluid transfer across a broad range of industrial and mobile applications. It features a 3/8-inch port with a BSPP female end connection and a push-to-connect male interface, supported by an internal ball lock mechanism for secure coupling engagement.

Part of the Aeroquip Hansen and Gromelle HK Series, this two-way valve coupling carries ISO 7241-1 Series B certification and is rated for a flow of 6 gallons per minute. Its design requires no special tools for connection or disconnection, making it well suited for agricultural equipment, construction machinery, hydraulic tooling, oil and gas, aerospace, transportation, and food and beverage fluid systems, among others. The coupling exceeds ISO 16028 operating pressures and functions down to -15°F minimum working temperature. No safety locking mechanism is incorporated.

SKU: B3K21BS143

Supplier Part Number (MPN): B3K21BS143

Specifications

Brand
Aeroquip® by Danfoss
Connection Size 1
3/8 in
Connection Size 2
3/8 in
Connection Style
Manual
Connection Type
Female BSP Swivel, Push-Fit
Connection Type 1
Male Push-to-Connect
Connection Type 2
Female BSPP Swivel
Dimension Standards
ISO 7241-1 Series B
Dimensions
1.01 in Dia x 1.76 in L
Fitting Type
Coupling
Fluid Compatibility
Hydraulic Fluids
Hex Size
7/8 in
Internal Connection Type
Ball Lock
Latch Type
Push/Pull
Material
Brass
Material Construction
Brass
Seal Material
FKM
Segment Code
C
Series
HK1-8 Series
Thread Size
3/8-19
Valve Type
2-Way

Product Questions & Answers (1)

Question by: Clint R on Sep 9, 2025, 11:50 AM
Will this here plug work with other quick disconnects, or is it just for the Hansen and Gromelle brand?
Answer by: Customer Support on Sep 11, 2025, 8:10 AM
This coupling is part of the Aeroquip Hansen and Gromelle HK Series and meets ISO 7241-1 Series B standards, which should ensure compatibility with other couplings that meet the same standards.

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