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Series 525, DN6.3
- Manual locking ring for extra security
- High durability
- Sturdy design
Series 525 is a family of quick couplings for hydraulic systems. A manually operated locking ring provides extra security against involuntary disconnection. Both couplings and nipples are made of steel with Zinc-Nickel surface for maximum durability in tough applications and environments.
The Series is also available in four other sizes: DN 10 (3/8″), DN 12.5 (1/2″), DN 20 (3/4″) and DN 25 (1″). For a stainless steel version see Series 526. Available are also a version with viton seals and a free flow version (without valve package).
Technical data
| Temperature range: | -30°C — +100°C (-22°F — +212°F) |
| Material coupling: | Steel (zinc-nickel) |
| Material nipple: | Hardened steel (zinc-nickel) |
| Material seal: | Nitril (NBR) alt. FPM |
| Connectability: | Without pressure |
| Disconnection under pressure: | Not allowed |
| Max. working pressure connected: | 450 bar (6526 PSI) |
| Max. working pressure disconnected: | 300 bar (4351 PSI) |
| Min. burst pressure connected: | 1800 bar (26106 PSI) |
| Min. burst pressure disconnected: | 1200 bar (17404 PSI) |
Rated flow is measured at 0.4 MPa pressure drop.
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Technical data:
| Couplings | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 1202 | G 1/4″ | 60 | 26 | 21 | NBR |
| 10 525 1212 | G 1/4″ | – | – | – | – | |
| Couplings without valve | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 0202 | G 1/4″ | – | – | – | – |
| Nipples | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 6202 | G 1/4″ | 48.2 | 21 | 19 | NBR |
| 10 525 6212 | G 1/4″ | – | – | – | – | |
| Nipples without valve | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 5202 | G 1/4″ | – | – | – | – |