Search 
Series 525, DN10
- Manual locking ring for extra security
- High durability
- Optional pressure eliminator
Series 525 is a family of quick couplings for hydraulic systems. A manually operated locking ring provides extra security against involuntary disconnection. An extra option for Series 525 couplings and nipples is a pressure eliminator for evacuating residual pressure during connection. 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 6.3 (1/4″), 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: | Part under pressure equipped with eliminator, other part free to drain. |
| Disconnection under pressure: | Not allowed |
| Max. working pressure connected: | 350 bar (5076 PSI) |
| Max. working pressure disconnected: | 280 bar (4061 PSI) |
| Min. burst pressure connected: | 1300 bar (18854 PSI) |
| Min. burst pressure disconnected: | 1100 bar (15954 PSI) |
Rated flow is measured at 0.4 MPa pressure drop.
More tools are featured in tool catalog.
Similar products:
Technical data:
| Couplings | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 1204 | G 3/8″ | 61.6 | 35 | 24 | NBR |
| 10 525 1214 | G 3/8″ | – | – | – | – | |
| Couplings without valve | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 0204 | G 3/8″ | 61.6 | 35 | 24 | NBR |
| Couplings with Pressure Eliminator | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 1234 | G 3/8″ | 61.6 | 35 | 24 | NBR |
| Nipples | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 6204 | G 3/8″ | 38 | 24 | 22 | NBR |
| 10 525 6214 | G 3/8″ | – | – | – | – | |
| Nipples without valve | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 5204 | G 3/8″ | 38 | 24 | 22 | NBR |
| Nipples with Pressure Eliminator | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 6234 | G 3/8″ | 38 | 24 | 22 | NBR |