Quick couplings
Nut Cupla
The Nitto Kohki Nut Cupla is a threaded-nut quick coupling for compressed-air lines, secured by a grooved locking geometry. The range covers 25 items across the PN (plug) and SN (socket) series in steel with NBR seals, in nominal sizes 50, 60, 65, 80, 85 and 110, plus the reinforced 200 series for heavier-duty line connections. Variants with the G suffix (e.g. 65PNG, 85SNG) are earthed versions for use in potentially explosive atmospheres.
- 25 items
- 1 manufacturer
- Net prices plus VAT
Buying guide
How to choose Nut Cupla
What matters when choosing: properties, comparison and typical applications.
Technical features
Selection criteria
| Criterion | Option |
|---|---|
| Nominal size | 50, 60, 65, 80, 85, 110 (PN/SN series); 50-110 (200 series) |
| Connector type | PN / PNG (plug), SN / SNG (socket) |
| Body material | Steel |
| Seal | NBR (standard) |
| Ex protection | G variants (PNG / SNG) earthed |
| Shut-off valve | BL variants (65SN-BL, 80SN-BL, 85SN-BL) |
Typical applications
Typical applications: Compressed-air distribution in production and assembly halls, pneumatic tools at compressor stations, pipe connections requiring a locked threaded joint, and use in potentially explosive atmospheres with the earthed G variants.