Hydraulic Products
Nordic Range / 525 - High Performance Poppet Type Couplings
Series 525, DN25
- 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 zinc-passivated steel 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 20 (3/4"). Available are also a version with viton seals and a free flow version (without valve package).
| Technical data |
| Nominal flow diameter: | 25 mm (1") |
| Rated flow: | 370 l/min (81.4 GPM UK) |
| Max. working pressure connected: | 25.0 MPa |
| Max. working pressure disconnected: | 25.0 MPa |
| Min. burst pressure connected: | 93.0 MPa |
| Min. burst pressure disconnected: | 100.0 MPa |
| Temperature range: | -30°C — +100°C (-22°F — +212°F) |
| Material coupling: | Steel (zinc passivation) |
| Material nipple: | Hardened steel (zinc passivation) |
| Material seal: | Nitrile (NBR) |
| Connectability: | Part under pressure equipped with eliminator, other part free to drain. |
| Disconnection under pressure: | Not allowed |
Rated flow is measured at 0.4 MPa pressure drop.
Pressure drop chart
Pressure drop, MPa
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Flow, l/min. (GPM UK)
| Couplings |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
105251209 | G 1" | 92 | 62 | 48 | NBR |
| | 105251219 | G 1" | 92 | 62 | 48 | FPM |
|
| Couplings without valve |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
105250209 | G 1" | 92 | 62 | 48 | NBR |
|
| Couplings with pressure eliminator |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
105251239 | G 1" | 92 | 62 | 48 | NBR |
|
| Nipples |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
105256209 | G 1" | 56.5 | 48 | 45 | NBR |
| | 105256219 | G 1" | 56.5 | 48 | 45 | FPM |
|
| Nipples without valve |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
105255209 | G 1" | 56.5 | 48 | 45 | - |
|
| Nipples with pressure eliminator |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
105256239 | G 1" | 56.5 | 48 | 45 | NBR |
|