
Best selling Water cooling connections from CPC
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1. CPC Quick-release fastener 6.4 mm coupling
The APC series with a nominal diameter of 6.4 mm features a plastic release button, fewer moving parts, and a design with smooth contours. As a result, it is easy to use and provides excellent flow in a compact size. The APC series has been expanded to include coupling variants with valves and protective collars on the release buttons. To broaden the application range of the APC series and increase its service life, some models have been built more robustly.
Quick-release coupling "socket," self-closing. Very low flow resistance due to the 6.4 mm nominal diameter. Not leak-proof (i.e., after uncoupling, 1-2 drops still flow out).

2. CPC Quick connect plug with bulkhead fitting
Quick disconnect plug single (male), self shut-off. 8mm hose nozzle, suitable for any hose with an 8mm inner diameter, such as 10/8mm or 11/8mm PVC hose. We recommend using cable ties to secure it. The nominal diameter is 7.9mm inside, which creates very low flow resistance. It is not leakage-free, meaning that after uncoupling, 1-2 drops may still flow out. Includes bulkhead fitting for through holes. Bulkhead connection diameter: thread size 17mm. Test reports include user tests at HWL and PC Games Extreme, as well as comparisons of various quick couplings at Aquainfos.

3. CPC Everis LQ6 Series Quick Connect Connector for 3/8" Hose - Blue
The CPC Everis LQ6 series quick disconnect plug with shut-off uses valve technology that reduces dripping and is suitable for longer periods of use. Connecting and disconnecting the LQ6 series is extremely reliable, protecting valuable electronic parts. This series, developed especially for refrigeration applications, offers a high flow capacity, enabling top performance in liquid cooling systems.
Technical data:
- Max. operating pressure: vacuum up to 8.3 bar
- Max. operating temperature: -17 °C to 115 °C
- Material housing: chrome-plated brass
- Material internal spring: stainless steel 302
- Material O-ring: EPDM.

CPC Everis LQ6 Series Quick Connect Connector for 3/8" Hose - Blue
4. CPC Everis NS4 Series Quick Connect Connector for 3/8" Hose - Grey
The CPC Everis quick-release connector with shut-off from the NS4 series for 3/8" hoses offers a drip-free shut-off valve in a compact size. The NS4 is ideal when the leakage of even a few drops is unacceptable for safety, cost, or environmental protection reasons. These innovative couplings are lightweight, chemically resistant, and easy to handle. The non-spill design of the NS4 series prevents droplet formation, minimizes downtime, and enhances user safety. Technical specifications: Max. operating pressure: vacuum up to 8.3 bar. Max. operating temperature: 0 °C to 71 °C. Housing material: glass-fiber reinforced polypropylene. Internal spring material: stainless steel AISI 316. O-ring material: EPDM.

CPC Everis NS4 Series Quick Connect Connector for 3/8" Hose - Grey
5. CPC Quick release plug
Self-sealing quick-release connector with a 6.4 mm nozzle and nominal diameter, resulting in very low flow resistance. Suitable for 8/6 mm hoses. Counterpart to the CPC 6.4 mm coupling. Test reports: User test at HWL, user test at PC Games extreme, various quick couplings compared at Aquainfos.

6. CPC Everis Quick Connect Coupling Series NS4 for 3/8" Hose - Grey
The CPC Everis NS4 Series Quick Disconnect Shut-off Coupling for 3/8" hoses offers a drip-free shut-off valve in a compact size. The NS4 is ideal when the release of even a few drops is not permissible due to safety, cost reasons, or environmental regulations. These innovative couplings are lightweight, chemical-resistant, and easy to use. The drip-free design of the NS4 series prevents droplet formation, minimizes downtime, and enhances user safety.
Technical specifications:
- Max. operating pressure: Vacuum up to 8.3 bar
- Max. operating temperature: 0 °C to 71 °C
- Housing material: Glass fiber reinforced polypropylene
- Thumb button material: Glass fiber reinforced polypropylene
- Internal spring material: AISI 316 stainless steel
- External spring material: AISI 316 stainless steel
- O-ring material: EPDM.
