Phidix Motion Controls (Shanghai) Co., Ltd.
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Product Specification
At 20,000 PSI and beyond, even minor connection flaws can lead to serious failure. The CB-SP2S-TF hydraulic quick coupler is designed to not only survive — but perform reliably — under such extreme loads. But what exactly defines "reliable" at this level?
This guide breaks down the real mechanical and sealing considerations that determine whether your system will hold... or not.
CB-SP2S-TF is rated for 21739 PSI, compliant with the same performance envelope of CEJN 115/116 Series couplers. But this number assumes:
• Clean threads and full insertion
• Properly rated hydraulic fluid
• No residual pressure or side-load distortion
Anything less can accelerate seal fatigue or even cause valve seat deformation — especially under pulsed load.
At ultra-high pressures, temperature swings affect seal resilience more dramatically. See below for NBR (standard) vs Viton (optional) performance curves:
If your system operates near 100°C or experiences cold-starts below -20°C, it’s worth discussing seal upgrade options.
Most frequent failure mechanisms include:
• O-ring extrusion due to thermal expansion
• Micro-cracks on machined mating surfaces
• Swivel under load causing thread fatigue
• Valve misalignment under residual side-load
CB-SP2S-TF incorporates hardened seats and precision alignment groove to mitigate these risks — but only within rated conditions.
The flat-face, push-to-connect design may seem counterintuitive at this pressure. But internal locking grooves, coupled with a high-contact valve interface, offer excellent holding force without user-dependent torque.
• Always match coupler and plug with same pressure class
• Avoid connection under residual load (unless rated)
• Replace seals regularly if used in thermal cycling
• Choose stainless variant if working in aggressive environments
True 21739 PSI Rating tested per LSQ-TF specs
CEJN-Compatible sizing and threading
Hardened steel construction with seal redundancy
Excellent pressure-to-size ratio for tight space systems
Curious about CEJN compatibility? → See full compatibility page
Q: Can I connect this coupler under pressure?
A: No. CB-SP2S-TF is not designed for residual pressure connection. Always depressurize first.
Q: Will NBR seals hold up to 100°C?
A: Short-term, yes. For continuous duty above 90°C, consider switching to Viton.
Q: Is this safer than threaded options at this pressure?
A: It depends on the use case. CB-SP2S-TF offers faster connect/disconnect and avoids over-torque risks in confined spaces.
CB-SP2S-TF isn't just a high-pressure coupler. It's a system-critical component that addresses real-world failure risks often ignored in spec sheets. If your application demands performance over marketing promises — this is the coupler to trust.
Company Details
Business Type:
Manufacturer,Importer,Exporter,Seller
Year Established:
2004
Total Annual:
10000-50000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Shanghai Phidix Trading Co., Ltd – Makers of Carterberg Quick Couplings.Reliable Hydraulic & Pneumatic Solutions Since 2004 Core Competencies • IATF 16949 Certified Excellence Specialized in precision hydraulic & pneumatic quick coupli... Shanghai Phidix Trading Co., Ltd – Makers of Carterberg Quick Couplings.Reliable Hydraulic & Pneumatic Solutions Since 2004 Core Competencies • IATF 16949 Certified Excellence Specialized in precision hydraulic & pneumatic quick coupli...
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