CB-SPB-1F-A ISO 7241-B Hydraulic Quick Coupling | Carterberg
Carterberg's CB-SPB-1F-A coupling is a durable quick connect solution built for medium-to-high pressure fluid systems, fully compliant with ISO 7241-1 Series B specifications. Constructed from corrosion-resistant brass, this model combines a ball-lock mechanism, a self-sealing poppet valve, and a protective dust cap into one reliable coupling unit.
Designed for quick connection and disconnection without fluid loss, CB-SPB-1F-A is suitable for a wide range of hydraulic, pneumatic, and water systems.
Key Features
• ISO 7241-B dimensional compatibility
• Brass body construction – corrosion-resistant and economical
• Integrated dust cap to protect connection ends from debris
• Ball-lock structure for safe, vibration-resistant coupling
• Poppet valve shutoff minimizes spillage during disconnect
• Available in BSPP, NPT, SAE thread options
• Flow-efficient design with minimal pressure drop
Material & Performance Benefits
Made entirely of brass, CB-SPB-1F-A offers a strong balance of mechanical integrity and corrosion resistance. Its compact form and clean disconnection design make it especially suitable for mobile applications and semi-open environments.
Unlike stainless steel models aimed at aggressive chemical resistance, this model is engineered for reliability in lubrication, compressed air, water supply, and general hydraulic circuits.
Technical Specifications
| Attribute |
Value |
| Material |
Brass |
| Rated Pressure |
Up to 5000 psi |
| Operating Temperature |
-20°C to +80°C |
| Max Flow Rate |
Up to 50 GPM |
| Seal Options |
Buna-N (standard), Viton, PTFE |
| Available Sizes |
1/4" – 1" |
| Threads |
BSPP / NPT / SAE |
Product Visual & Dimensions
This model is provided as a complete plug + socket set. The socket features a poppet valve and dust cap; the plug uses a push-to-connect ball-lock system.
• Complete Set

• Plug Component

| Body Size |
PARTNO. |
LP |
C |
HP |
A |
T |
| 1/4" |
CB-P2B-1FG |
35.5 |
22.8 |
19*6 |
13 |
G1/4 |
| 1/4" |
CB-P2B-1FN |
35.5 |
22.8 |
19*6 |
13 |
NPT1/4 |
| 3/8" |
CB-P3B-1FG |
40 |
25 |
22*6 |
14 |
G3/8 |
| 3/8" |
CB-P3B-1FN |
40 |
25 |
22* |
14 |
NPT3/8 |
| 1/2" |
CB-P4B-1FG |
46.5 |
28 |
27*6 |
18 |
G1/2 |
| 1/2" |
CB-P4B-1FN |
46.5 |
28 |
27*6 |
18 |
NPT1/2 |
| 3/4" |
CB-P6B-1FG |
56 |
36 |
36*6 |
22 |
G3/4 |
| 3/4" |
CB-P6B-1FN |
56 |
36 |
36*6 |
22 |
NPT3/4 |
| 1" |
CB-P8B-1FG |
65 |
45 |
41*6 |
23 |
G1 |
| 1" |
CB-P8B-1FN |
65 |
45 |
41*6 |
23 |
NPT1 |
• Socket Component

| Body Size |
PARTNO. |
LS |
Φ D |
HS |
A |
T |
| 1/4" |
CB-S2B-1FG |
58 |
28.5 |
19 |
13 |
G1/4 |
| 1/4" |
CB-S2B-1FN |
58 |
28.5 |
19 |
13 |
NPT1/4 |
| 3/8" |
CB-S3B-1FG |
65 |
35 |
22 |
14 |
G3/8 |
| 3/8" |
CB-S3B-1FN |
65 |
35 |
22 |
14 |
NPT3/8 |
| 1/2" |
CB-S4B-1FG |
74 |
44.5 |
28.5 |
18 |
G1/2 |
| 1/2" |
CB-S4B-1FN |
74 |
44.5 |
28.5 |
18 |
NPT1/2 |
| 3/4" |
CB-S6B-1FG |
92 |
54 |
36 |
22 |
G3/4 |
| 3/4" |
CB-S6B-1FN |
92 |
54 |
36 |
22 |
NPT3/4 |
| 1" |
CB-S8B-1FG |
105 |
65 |
41 |
23 |
G1 |
| 1" |
CB-S8B-1FN |
105 |
65 |
41 |
23 |
NPT1 |
Applications
The CB-SPB-1F-A is commonly used in:
• Mobile hydraulic and pneumatic tools
• Lubrication equipment and chemical dispensers
• Compressed air and water transfer systems
• Tractors and light machinery
• General industrial fluid circuits
Interchange Compatibility
This model is interchangeable with the following ISO B compliant products:
• Parker 60 Series
• Faster HNV Series
• Aeroquip FD45
• Hansen HK Series
For detailed compatibility insights, visit:
Why Choose CB-SPB-1F-A?
| Feature |
Advantage |
| 5000 psi pressure rating |
Suitable for medium/high-pressure systems |
| Ball-lock + poppet sealing |
Ball-lock + poppet sealing |
| Brass material |
Cost-effective corrosion protection |
| Dust cap design |
Better protection during storage and transport |
Need a Quote or Support?
Our team can help you confirm port sizes, select the correct seal, and match your application.
Please contact us