CB-SP-1F ISO 7241-B Hydraulic Quick Coupling | Carterberg
The CB-SP-1F quick coupling from Carterberg is a universal solution
designed to meet the dimensional requirements of ISO 7241-1 Series
B. Engineered for standard fluid transfer systems across
agriculture, construction, and general industry, this model
combines a self-sealing poppet valve with a rugged ball-lock
structure, providing secure, clean, and efficient hydraulic
connections.
This SKU represents the standard and most widely compatible option
in the Carterberg ISO B series – making it the first choice for
general-purpose hydraulic applications.
Key Features
• Fully compliant with ISO 7241-B interchange dimensions
• Self-sealing poppet valves: excellent sealing under high and low
pressure
• Ball latch mechanism: secure locking and easy handling
• Designed for clean connection/disconnection without fluid loss
• Supports a variety of seal materials (Buna-N,Neoprene,EPDM,FKM)
• Wide range of thread configurations and sizes
• Compatible with steel, brass, and stainless steel variants
Material Compatibility & Seal Options
CB-SP-1F is available in multiple material constructions (e.g.,
carbon steel, brass, 303/316 stainless steel) and supports several
industry-grade seal materials:
| Seal Material | Max Temperature |
| Buna-N | -40°C to +121°C |
| Neoprene | -54°C to +100°C |
| EPDM | -54°C to +149°C |
| FKM | -29°C to +204°C |
This flexibility allows the CB-SP-1F to be adapted to different
fluids and environmental conditions, whether you're dealing with
mineral oils, synthetic compounds, or compressed air.
Technical Specifications
| Size (Inches) | Rated Pressure (psi) | Flow Rate (gpm) |
1/8" | 4000 | 0.8 |
| 1/4" | 5000 | 3 |
| 3/8" | 4000 | 6 |
| 1/2" | 5000 | 12 |
| 3/4" | 4000 | 26 |
| 1" | 4000 | 50 |
| 1-1/4" | 2900 | 76 |
| 1-1/2" | 2175 | 99 |
| 2" | 1450 | 200 |
Temperature Range: Based on seal material
Mounting: Threaded (BSPP / NPT / SAE)
Product Visual & Dimensions
• Coupled plug and socket set
• Threaded plug showing ball-lock structure
| Body Size | PARTNO. | Thread | C | D | E | HEX |
| 1/8" | CB-P1S-1FG | 1/8-27 | 1.26 | 0.65 | 0.44 | 0.56 |
| 1/8" | CB-P1S-1FG | 1/8-27 | 1.26 | 0.65 | 0.44 | 0.56 |
| 1/4" | CB-P2S-1FG | 1/4-19 | 1.52 | 0.87 | 0.56 | 0.75 |
| 1/4" | CB-P2S-1FN | 1/4-18 | 1.52 | 0.87 | 0.56 | 0.75 |
| 3/8" | CB-P3S-1FG | 3/8-19 | 1.76 | 1.01 | 0.61 | 0.88 |
| 3/8" | CB-P3S-1FN | 3/8-18 | 1.76 | 1.01 | 0.61 | 0.88 |
| 1/2" | CB-P4S-1FG | 1/2-14 | 2.03 | 1.30 | 0.76 | 1.13 |
| 1/2" | CB-P4S-1FN | 1/2-14 | 2.03 | 1.30 | 0.76 | 1.13 |
| 3/4" | CB-P6S-1FG | 3/4-14 | 2.36 | 1.52 | 0.71 | 1.31 |
| 3/4" | CB-P6S-1FN | 3/4-14 | 2.36 | 1.52 | 0.71 | 1.31 |
| 1" | CB-P8S-1FG | 1-11 | 2.85 | 1.88 | 0.97 | 1.63 |
| 1" | CB-P8S-1FN | 1-11 | 2.85 | 1.88 | 0.97 | 1.63 |
• Disconnected socket showing poppet valve
| Body Size | PARTNO. | Thread | A | B | Across Flats |
| 1/8" | CB-S1S-1FG | 1/8-27 | 1.91 | 0.98 | 0.56 |
| 1/8" | CB-S1S-1FN | 1/8-27 | 1.91 | 0.98 | 0.56 |
| 1/4" | CB-S2S-1FG | 1/4-19 | 2.26 | 1.17 | 0.75 |
| 1/4" | CB-S2S-1FN | 1/4-18 | 2.26 | 1.17 | 0.75 |
| 3/8" | CB-S3S-1FG | 3/8-19 | 2.56 | 1.42 | 0.88 |
| 3/8" | CB-S3S-1FN | 3/8-18 | 2.56 | 1.42 | 0.88 |
| 1/2" | CB-S4S-1FG | 1/2-14 | 2.96 | 1.86 | 1.13 |
| 1/2" | CB-S4S-1FN | 1/2-14 | 2.96 | 1.86 | 1.13 |
| 3/4" | CB-S6S-1FG | 3/4-14 | 3.48 | 2.22 | 1.31 |
| 3/4" | CB-S6S-1FN | 3/4-14 | 3.48 | 2.22 | 1.31 |
| 1" | CB-S8S-1FG | 1-11 | 4.13 | 2.61 | 1.75 |
| 1" | CB-S8S-1FN | 1-11 | 4.13 | 2.61 | 1.75 |
Application Scenarios
The CB-SP-1F is widely used in:
• Hydraulic cylinders and mobile equipment
• Agricultural sprayers and spreaders
• Construction tools and machinery
• Industrial fluid transfer systems
• Utility service vehicles and transport machinery
Its ISO B interchangeability and broad media compatibility make it ideal for OEM designs and maintenance replacement alike.
Brand Interchange Compatibility
The CB-SP-1F is fully interchangeable with:
• Parker 60 Series
•Faster HNV Series
•Aeroquip FD45
•Hansen HK Series
Learn more in the Brand Interchange Guide
Why Choose CB-SP-1F?
| Reason | Benefit |
| Standard model | Most compatible across applications |
| ISO-compliant sealing | Ensures zero leak performance |
| Adaptable materials & seals | Customizable for your fluid system |
| Proven interchangeability | Proven interchangeability |
Frequently Asked: Steel vs Stainless?
Wondering whether to use steel, stainless, or brass?
The CB-SP-1F lets you decide based on operating fluid and cost
constraints – its design fits all three material options.
• For high-pressure oil systems → Steel
• For sanitary or aggressive fluids → Stainless
• For compressed air or water lines → Brass
Let’s Configure Your Coupling
Need help selecting the right seal, thread type, or material?
Please contact
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