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
