Chemical-resistant couplings
CQG
The CQG series (ChemQuik) comprises high-purity couplings and inserts with a pressure-balanced, non-spill design for chemical lines. Virgin polypropylene bodies and a flow path without a spring give broad chemical resistance and high flow. Operating range: vacuum to 5.5 bar, 0 to 66 °C, FKM seals.
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Couplings and inserts in polypropylene, mounting accessories in polyethylene.
- 11 items
- 1 manufacturer
- Net prices plus VAT
Buying guide
How to choose CQG
What matters when choosing: properties, comparison and typical applications.
Selection criteria
| Criterion | CQG |
|---|---|
| Design | pressure-balanced, non-spill, springless flow path |
| Pressure | vacuum to 5.5 bar |
| Temperature | 0 to 66 °C |
| Body | virgin polypropylene |
| Seal | FKM |
| Connections | flare 3/8, 1/2, 3/4 in, NPT male thread 3/8, 1/2, 3/4 |
| Mounting | in-line, panel mount, thread |
Frequently asked questions
- Can CQG be disconnected under pressure?
- Yes. Its pressure-balanced design allows disconnecting and reconnecting while the line is under pressure up to 5.5 bar.
- Why is the flow rate high?
- There is no spring in the flow path, so the fluid passes through an open polypropylene cross-section.
- What is the polyethylene part for?
- The polyethylene panel mount kit is used to install the CQG coupling in a front panel.
- When is CQH the better choice?
- If temperatures exceed 66 °C or a Chemraz seal is required, the sister series CQH is the better fit.