CB-SPS-3FN-BC Threaded Hydraulic Quick Coupling
The CB-SPS-3FN-BC is Carterberg’s compact threaded hydraulic coupler, designed for mobile equipment that demands reliable, low-spill connections in tight spaces. Featuring a wing nut locking system on the female half, it allows manual operation even under residual pressure—no tools required.
Engineered for dump trucks, agricultural machinery, and construction vehicles, the CB-SPS-3FN-BC uses a dual shut-off design with low spillage and minimal air inclusion. Its zinc-plated steel construction ensures corrosion resistance and long-term durability under field conditions.
Key Features
• Threaded Wing Nut Connection (Female Side)
Allows safe connection under pressure using manual hand force.
• Dry-Break Valve Design
Dual shut-off minimizes fluid loss and air ingress on disconnection.
• Field-Proven Steel Construction
Hardened components and surface plating ensure longevity in rugged outdoor use.
• NBR Seals (Standard)
Compatible with most petroleum-based hydraulic fluids; Viton and EPDM available on request.
• Interchange Compatibility
Designed for functional interchange with major European dry-break coupler standards
Technical Specifications
| Parameter | Value |
| Model | CB-SPS-3FN-BC |
| Connection Type | Thread-to-Connect (Wing Nut) |
| Valve Type | Dual Shut-Off / Dry-Break |
| Body Material | Zinc-plated carbon steel |
| Seal Material | NBR (standard) |
| Nominal Sizes | 3/4", 1" |
| Rated Pressure | 4000 PSI (3/4"), 3000 PSI (1") |
| Rated Flow | 25 GPM (3/4"), 50 GPM (1") |
| Operating Temperature | -20°C to +120°C |
| Connect Under Residual Pressure | Yes (manual operation) |
Dimensional Overview
Female (Socket)
| PARTNO. | T | ￠D | HEX1 | HEX2 | L | LS | LP |
| CB-S6S-BC | G3/4 | 115.4 | 46 | 33 | 132.5 | 78 | 78 |
| CB-S8S-BC | 1" | 115.4 | 55 | 40 | 145 | 83 | 83 |
Typical Applications
• Dump truck hydraulic interfaces
• Agricultural trailer-mounted implements
• Mobile concrete pumping systems
• Utility vehicle attachments
• Compact field hydraulic tools
Design Advantages
| Feature | Benefit |
| Wing nut sleeve on socket half | Connects under pressure without tools |
| Dry-break valve core | Reduces oil spillage and contamination |
| Short overall length | Fits into narrow installation spaces |
| Replaceable seal options | Extended media and temperature compatibility |
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