Quick couplings
HI Cupla BL
The Nitto Kohki HI Cupla BL is a quick coupling in steel and stainless steel (SUS) with NBR seal and ball-lock retention (BL: Ball Lock). The programme includes 18 items in plug (SH) and socket configurations across nominal sizes 20, 30, and 40. The BL locking uses a ball-detent mechanism that reliably secures the connection under pressure and vibration. Stainless steel versions (SUS) provide enhanced corrosion resistance for aggressive environments.
- 18 items
- 1 manufacturer
- Net prices plus VAT
Buying guide
How to choose HI Cupla BL
What matters when choosing: properties, comparison and typical applications.
Technical features
Type overview
| Type | Nominal size | Material | Seal | Lock |
|---|---|---|---|---|
| 20SH-BL | 20 | Steel | NBR | Ball Lock |
| 30SH-BL | 30 | Steel | NBR | Ball Lock |
| 40SH-BL | 40 | Steel | NBR | Ball Lock |
| 20SM-BL | 20 | Steel | NBR | Ball Lock |
| 30SM-BL | 30 | Steel | NBR | Ball Lock |
| 40SM-BL | 40 | Steel | NBR | Ball Lock |
| 20SH-BL (SUS) | 20 | Stainless steel | NBR | Ball Lock |
Typical applications
Typical applications: Compressed-air lines on vibration-loaded machines and vehicles, chemical and petrochemical plants where corrosion resistance is required (SUS), coupling of air lines under working pressure without full depressurisation, and pneumatic systems requiring an easily releasable yet vibration-proof connection.