flat-face-hydraulic-quick-couplings-iso-16028-cb-sp-6fn-ptr
CB-SP-6FN-PTR Flat Face Hydraulic Coupler – Compact, Blowout-Proof, NITTO Interchange
The CB-SP-6FN-PTR from Carterberg is a compact, flat face hydraulic quick coupling engineered for tight-space, high-reliability applications. It is built from hardened steel and protected by a yellow zinc dichromate coating, ensuring strong corrosion resistance while remaining lightweight and compact in form.
This model integrates an anti-blowout bonded seal, a locking sleeve for pull-off prevention, and a dust-resistant protective structure—all within a design that is fully interchangeable with NITTO 350 Series couplers. It is ideal for mobile hydraulic systems requiring high reliability in constrained installation conditions, such as in electric power service vehicles or compact hydraulic tools.
Key Features
| Feature | Description |
|---|---|
| Flat Face Non-Spill Valve | Minimizes fluid loss and air ingress during disconnection; ideal for clean, safe operations. |
| Mechanical Sleeve Lock | Prevents accidental pull-off or vibration-induced disconnection during equipment operation. |
| Dust Seal Protection | Outer sleeve structure prevents ingress of debris, protecting the locking mechanism and valve. |
| Anti-Blowout Bonded Seal | With PTFE backup ring to handle surge pressure without seal damage. |
| Yellow Zinc Coating | Offers improved corrosion resistance compared to standard coatings, while providing visible identification. |
| Steel Construction + Hardened Components | For mechanical durability in portable or vibration-prone environments. |
| Compact Form Factor | Slim profile ideal for tight installation spaces (1/4" and 3/8" sizes only). |
| NITTO 350 Interchange | Directly compatible with Japanese-standard couplers in the 350 series. |
Technical Specifications
| Body Size | 1/4" | 3/8" |
|---|---|---|
| Rated Pressure | 5000 PSI | |
| Max Flow Rate | 6GPM | |
| Temperature | -20°C to +120°C | |
| Seal Material | NBR (Nitrile Rubber) | |
| Surface Coating | Yellow zinc dichromate | |
| Connection Type | Push-to-connect with sleeve lock | |
| Valve Type | Flat face non-spill design | |
Dimensional Overview
Female (Socket)
|
PART NO. |
LS |
ΦD |
HEX1 |
A |
T |
|
CB-S2S-6FN-PTR |
59.3 |
30.4 |
27 |
14 |
ZG1/4 NPT1/4 |
|
CB-S3S-6FN-PTR |
71.1 |
31.5 |
30 |
16 |
ZG3/8 NPT3/8 |
Male (Plug)
|
PART NO. |
LP |
C |
HEX2 |
A |
T |
|
CB-P2S-6FN-PTR |
64 |
20.5 |
19 |
14 |
ZG1/4 NPT1/4 |
|
CB-P3S-6FN-PTR |
71 |
25.5 |
24 |
16 |
ZG3/8 NPT3/8 |
Recommended Applications
• Electric utility vehicle maintenance
• Compact hydraulic tool systems
• Power generation field service
• Hydraulic jacks and control systems with space constraints
• Equipment where anti-blowout seal is required
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.