CB-SPS-3FN-W6000 Stainless Steel Threaded Hydraulic Coupling | Carterberg High-Resistance Series
Built for Pressure. Engineered for Corrosion.
The CB-SPS-3FN-W6000 by Carterberg is a rugged, screw-to-connect hydraulic quick coupling constructed from high-grade stainless steel for maximum durability in aggressive environments. This model is designed to handle residual pressure during connection, making it a reliable solution for offshore platforms, oil and gas systems, and heavy mechanical shock applications.
With a flush-face, double shut-off design, the CB-SPS-3FN-W6000 ensures reduced fluid loss and enhanced contamination control, even in dynamic or corrosive operations.
Key Features
• Thread-to-Connect Coupling
Secure threaded engagement prevents accidental disconnects under load or vibration. Recommended for high-impulse hydraulic applications.
• Stainless Steel Construction
Fabricated from AISI 316L-grade stainless steel (equivalent to 1.4404), this coupler offers excellent corrosion resistance in offshore, marine, or chemical exposure environments.
• Residual Pressure Tolerance
Specially engineered to allow connection even when there is trapped residual hydraulic pressure in the line. Lubrication of thread is recommended when connecting under load.
• Low Fluid Loss + Non-Spill Valve
Flush-face valve design reduces air inclusion and prevents oil spillage during disconnect, supporting long-term cleanliness in closed hydraulic systems.
• Dual Seal Options Available
Equipped with either FKM (Viton) or EPDM elastomers to suit a wide temperature range and various fluid compatibility needs.
Technical Specifications
| Parameter | Value |
| Model | CB-SPS-3FN-W6000 |
| Connection Type | Threaded (manual) |
| Valve Design | Flush-face, double shut-off |
| Body Material | Stainless Steel AISI 316L (1.4404) |
| Seal Material | FKM or EPDM |
| Connection Under Residual Pressure | Yes (socket side) |
| Size Range | 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" |
| Max Operating Pressure | Up to 15,950 psi (1100 bar) |
| Rated Flow | Up to 94.3 L/min (depending on size) |
| Operating Temperature | -20°C to +200°C (FKM) / -40°C to +150°C (EPDM) |
Dimensional Overview
Female (Socket)
| Body Size | PARTNO. | Thread | A | B | HEX |
| 1/4" | CB-S2S-5FN | 1/4-18 | 53 | 35 | 19 |
| 1/4" | CB-S2S-5FG | 1/4-19 | 53 | 35 | 19 |
| 3/8" | CB-S3S-5FN | 3/8-18 | 65 | 38 | 23 |
| 3/8" | CB-S3S-5FG | 3/8-19 | 65 | 38 | 23 |
| 1/2" | CB-S4S-5FN | 1/2-14 | 74 | 45 | 27 |
| 1/2" | CB-S4S-5FG | 1/2-14 | 74 | 45 | 27 |
| 3/4" | CB-S6S-5FN | 3/4-14 | 91 | 55 | 35 |
| 3/4" | CB-S6S-5FG | 3/4-14 | 91 | 55 | 35 |
| 1" | CB-S8S-5FN | 1-11 1/2 | 103 | 69 | 41 |
| 1" | CB-S8S-5FG | 1-11 | 103 | 69 | 41 |
Male (Plug)
| Body Size | PARTNO. | Thread | C | D | HEX |
| 1/4" | CB-P2S-3FN | 1/4-18 | 35 | 15 | 19 |
| 1/4" | CB-P2S-3FG | 1/4-19 | 35 | 15 | 19 |
| 3/8" | CB-P3S-3FN | 3/8-18 | 42 | 19 | 23 |
| 3/8" | CB-P3S-3FG | 3/8-19 | 42 | 19 | 23 |
| 1/2" | CB-P4S-3FN | 1/2-14 | 50 | 22 | 27 |
| 1/2" | CB-P4S-3FG | 1/2-14 | 50 | 22 | 27 |
| 3/4" | CB-P6S-3FN | 3/4-14 | 63 | 29 | 35 |
| 3/4" | CB-P6S-3FG | 3/4-14 | 63 | 29 | 35 |
| 1" | CB-P8S-3FN | 1-11 1/2 | 71 | 36 | 41 |
| 1" | CB-P8S-3FG | 1-11 | 71 | 36 | 41 |
Applications
• Offshore platforms & subsea equipment
• Oil & gas fluid circuits
• High-vibration mobile hydraulic systems
• Material handling machinery with mechanical shock
• Pressure-sensitive or contamination-controlled systems
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