Liquid cooling (Everis)
Everis LQ4S
- Selection criteria
- FAQ
- Everis LQ4
- Everis LQ6
- UQD and UQDB (OCP)
- Data center
- UQD and UQDB couplings (OCP)
- Non-spill couplings for data centers
Everis LQ4S is the stainless steel member of the CPC Everis LQ family: a dry break quick disconnect with 1/4" flow for liquid cooling where corrosion resistance matters. The stainless steel 303 body disconnects without dripping, even under pressure, and its multi-lobed EPDM seals are built for long periods in the connected state. Terminations are 6.4 and 9.5 mm hose barb or locking hose barb, 3/8" SAE or G3/8 (BSPP), rated from vacuum to 8.3 bar and -17 to 115 °C.
Everis LQ4S by colour
Find colour-marked and plain metal versions directly.
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Buying guide
How to choose Everis LQ4S
What matters when choosing: properties, comparison and typical applications.
Selection criteria
| Criterion | This series | Note |
|---|---|---|
| Flow | 1/4" | High flow with low pressure drop. |
| Termination | 6.4 mm and 9.5 mm hose barb and locking hose barb, 3/8" SAE-6, G3/8 (BSPP) | Locking hose barbs hold reinforced tubing without a clamp. |
| Body | Stainless steel 303, some passivated | Inherently resistant to corrosion. |
| Seal | EPDM | For common coolants such as water-glycol. |
| Pressure | Vacuum to 8.3 bar | Same range as the LQ4. |
| Temperature | -17 to 115 °C | Applies to the EPDM seal. |
| Colour | plain metal, blue or red marked | Marked versions for line identification. |
Frequently asked questions
- When is the LQ4S worth choosing over the LQ4?
- When the loop calls for more corrosion resistance than chrome-plated brass provides. Flow, pressure range and handling match the LQ4.
- What does dry break mean?
- On disconnection both valves close before coolant can escape. The surroundings stay dry, even when disconnecting under pressure.
- Which coolants is the LQ4S intended for?
- The EPDM seals suit common coolants such as water-glycol in the range of -17 to 115 °C.
- Where is the LQ4S used in a data center?
- On hose lines and manifolds of liquid cooling systems where a metal body with high corrosion resistance is specified. Because the coupling disconnects without dripping, components can be swapped without draining the cooling loop.