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Breco Products

Series "6600" - [ISO 7241-1 Series A]
Series "6600" Sockets
Female Thread
Sizes and Pricing

Femail Thread Socket
Series "6600" Plugs
Female Thread
Sizes and Pricing

Female Thread Plug


BRECO Series "6600" couplings feature poppet valves with a solid metal perch that maintains valve alignment and prevents flow checking. Both the sleeves of the socket and plug are case hardened to make the couplings resistant to damage from brinelling and mechanical shock. The durable ball-locking mechanism ensures a reliable connection every time. These couplings have female pipe and straight thread end configurations as standard. The dimensional requirements of Series A in ISO 7241-1. Socket and plug are interchangeable with other parts compatible with ISO 7241-1.


1/4" 3/8" 1/2" 3/4" 1
Rated Pressure (PSI)
Working Pressure 5000 4000 4000 4000 4000
Temperature Range (std seals): -40° to +250° F.


The versatile Series "6600" couplings are used in a wide range of hydraulic applications including construction equipment, manufacturing machinery, and in-plant systems. They can be found anywhere the fluid transfer lines need to be connected and disconnected for operation or maintenance of equipment. Rugged construction makes it a good choice for mobile applications including dump trucks, snow plows, refuse hauling, mining, asphalt paving, truck trailer connections and many more. In-plant machinery applications include hydraulic fluid, chemicals and gas lines for paper mills, steel production, and many varieties of plant maintenance and production equipment.


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