CB-SP2S-TF vs CEJN 115/116 Series: What Compatibility Really Means
Why Compatibility Matters in Super High Pressure Systems
When working with systems that push the boundaries of pressure—up
to 21739 PSI—connection failure is not an option. Many engineers
and purchasing teams using CEJN 115 or 116 series couplers seek
cost-effective, lead-time-efficient alternatives. But is
"compatible" really enough?
Let’s unpack what compatibility means when it comes to CB-SP2S-TF, Carterberg’s precision-engineered alternative to CEJN.
Dimensional Compatibility: Engineered to Fit
CB-SP2S-TF is dimensionally designed to match the interface of CEJN
115 and 116 Series quick couplings:
• Thread Type: Same as CEJN – supports seamless connection
• Coupling Interface Geometry: Fully matched to CEJN profiles
• Locking Mechanism: Ball-lock structure with identical engagement stroke
• Valve Arrangement: Equivalent poppet design for consistent open/close actuation
Result: CB-SP2S-TF can be connected directly to CEJN 115/116 couplers
without requiring adaptors or special interface sleeves.
Seal Materials & Environmental Fit
CEJN typically uses FPM (Viton) or EPDM seals depending on
temperature or media. CB-SP2S-TF is supplied standard with NBR, but
offers optional upgrades upon request.
| Seal Material | CB-SP2S-TF (Standard/Optional) | CEJN Series |
|---|
| NBR | ✔ Standard | ✔ Available |
| Viton (FPM) | ✔ Optional | ✔ Common |
| EPDM | ✔ Optional | ✔ Available |
Working Temperature:
CB-SP2S-TF: -30°C to +100°C
CEJN 115: -30°C to +150°C (depending on seal type)
Note: For applications above 100°C or involving synthetic fluids,
simply specify your seal preference when ordering CB-SP2S-TF.
Is CB-SP2S-TF a Drop-in Replacement?
Yes—for most use cases. CB-SP2S-TF is designed to be plug-and-play with CEJN 115 and 116,
provided the following considerations are understood:
• Replace Both Ends When Possible
While the coupling can connect with CEJN halves, Carterberg
recommends replacing both plug and socket to ensure sealing
longevity and consistent wear patterns.
• For Critical Systems, Verify with Pressure Bench Testing
Some OEM systems may have internal tolerances optimized for CEJN’s
exact steel alloy or spring tension. If unsure, test before full-scale rollout
Why Carterberg: More Than Just a Copy
Many so-called “CEJN-compatible” products in the market are
reverse-engineered, but lack precision tolerancing or material
quality. CB-SP2S-TF offers:
• Full traceability of materials and pressure testing
• Lead times within 7–20 days for batch orders
• Customization options (seal material, surface plating, packaging)
• Cost efficiency compared to CEJN, with no compromise on reliability
Common Questions
Q: Can I use CB-SP2S-TF with an existing CEJN socket?
A: Yes, the geometry matches. However, for optimal sealing
performance and long-term durability, we recommend replacing both
halves.
Q: What seal materials are available?
A: Standard is NBR. You may request Viton or EPDM depending on your
application’s chemical or thermal needs.
Q: Is this suitable for rescue tools or torque equipment?
A: Absolutely. CB-SP2S-TF was engineered specifically for extreme
pressure, compact-size applications like hydraulic jacks, cutters,
spreaders, and torque tensioning systems.
