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Series 525, DN20
- 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 10 (3/8″), DN 12.5 (1/2″) 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: | 280 bar (4061 PSI) |
| Max. working pressure disconnected: | 200 bar (2900 PSI) |
| Min. burst pressure connected: | 1000 bar (14503 PSI) |
| Min. burst pressure disconnected: | 800 bar (11603 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 1207 | G 3/4″ | 76.2 | 52 | 38 | NBR |
| 10 525 1217 | G 3/4″ | – | – | – | – | |
| Couplings without valve | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 0207 | G 3/4″ | – | – | – | – |
| Couplings with pressure eliminator | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 1237 | G 3/4″ | 76.2 | 52 | 38 | NBR |
| Nipples | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 6207 | G 3/4″ | 47 | 39 | 36 | NBR |
| 10 525 6217 | G 3/4″ | – | – | – | – | |
| Nipples without valve | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 5207 | G 3/4″ | – | – | – | – |
| Nipples with pressure eliminator | Part No. | Connection | Length | Diameter | Hexagon | Seal |
| Female thread | 10 525 6237 | G 3/4″ | 47 | 39 | 36 | NBR |