CB-ISOA Hydraulic Quick Coupling – ISO 7241-A | Carbon Steel Shock-Resistant Design
Engineered for resilience in demanding hydraulic systems, the CB-ISOA quick coupler is a carbon steel ISO 7241-A type coupling featuring an upgraded valve design for superior resistance to pressure impulses and shock loads.
It serves as a high-performance alternative to standard ISO-A fittings in heavy-duty equipment where hydraulic reliability and impact tolerance are essential.
Key Features & Technical Advantages
• Enhanced poppet valve design
Reduces performance loss from pressure surges and provides stable flow under fluctuating hydraulic loads.
• Double shut-off valve structure
Ensures minimal fluid spillage during disconnection while maintaining clean, safe circuits.
• Precision ball-lock mechanism
Reliable under vibration, locking male and female halves securely even in mobile or high-impact systems.
• Carbon steel body with chrome plating
Increases surface hardness and scratch resistance without significantly impacting cost.
• Standard seal: NBR
Suitable for oil-based systems up to 120°C; optional Viton seals available for extended temperature resistance.
• Full ISO 7241-A interchange
Compatible with Parker 6600, Faster ANV, Aeroquip 5600, and Hansen HA 15000 Series.
Technical Specifications
| Parameter | Value |
| Body sizes | 1/4", 3/8", 1/2", 3/4", 1" |
| Max working pressure | 5000 to 3000 PSI (varies by size) |
| Flow rate | 3 to 50 GPM |
| Temperature range | -20°C to +120°C |
| Seal material | NBR (standard), Viton (optional) |
| Valve type | Poppet with improved impulse absorption |
| Material | Chrome-plated carbon steel |
Dimensional Overview
Female (Socket)
| Body Size | PARTNO. | LS | Φ D | HS | A | T |
| 1/4" | CB-S2SF-ISOA | 50 | 26 | S19*6 | 13 | G1/4 NPT1/4 |
| 3/8" | CB-S3SF-ISOA | 60 | 31.5 | S22*6 | 16 | G3/8 NPT3/8 |
| 1/2" | CB-S4SF-ISOA | 68 | 39 | S27*6 | 18 | G1/2 NPT1/2 |
| 3/4" | CB-S6SF-ISOA | 80 | 48 | S34*6 | 20.5 | G3/4 NPT3/4 |
| 1" | CB-S8SF-ISOA | 99.5 | 53 | S41*6 | 20.5 | G1 NPT1 |
Male (Plug)
| Body Size | PARTNO. | LP | d | C | HP | A | T |
| 1/4" | CB-P2SF-ISOA | 38.5 | 11.8 | 15 | S19*6 | 13 | G1/4 NPT1/4 |
| 3/8" | CB-P3SF-ISOA | 39 | 17.3 | 19 | S22*6 | 16 | G3/8 NPT3/8 |
| 1/2" | CB-P4SF-ISOA | 44 | 20.5 | 29 | S27*6 | 18 | G1/2 NPT1/2 |
| 3/4" | CB-P6SF-ISOA | 55 | 29 | 29 | S34*6 | 20.5 | G3/4 NPT3/4 |
| 1" | CB-P8SF-ISOA | 66 | 34.3 | 35 | S41*6 | 20.5 | G1 NPT1 |
Flow Performance (Pressure Drop Curve)
Use chart from reference image with disclaimer: Test fluid: Oil-200 SUS. Curve shown is representative for LSQ-ISOA series.
Applications
CB-ISOA is ideal for hydraulic systems with frequent actuation or dynamic flow fluctuations:
• Construction equipment (excavators, breakers)
• Forestry and agricultural machinery
• Hydraulic tools with impulse-prone cycles
• Oil field and mining operations
CB-ISOA vs Other ISO-A Couplers
Why choose CB-ISOA over standard carbon steel ISO-A fittings like CB-SP-10M-3?
| Comparison Aspect | CB-ISOA | CB-SP-10M-3 |
| Valve Design | Upgraded poppet (shock-resistant) | Standard poppet |
| Surface Coating | Chrome-plated | Zinc-plated |
| Flow Stability | Higher under impulse | Moderate |
| Price Point | Slightly higher | More cost-effective |
| Best for | High-duty, impact-prone systems | General hydraulic use |
Q: Can CB-ISOA be used in marine or corrosive environments?
A: It is not designed for saltwater or chemical environments. For such use, consider stainless steel versions like CB-SPM-10F-A. Q: What makes CB-ISOA different from standard ISO-A couplers?
A: Its improved poppet design significantly enhances shock absorption, while its chrome-plated finish increases durability in rugged systems.
Q: Is it interchangeable with other ISO 7241-A fittings?
A: Yes – CB-ISOA is fully compatible with all standard ISO-A couplers.
Call to Action
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Cb-isoa-iso-7241-a Hydraulic Quick Coupling 600 Parker Interchange ISO 7241-A Images
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