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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.

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