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Series 526, DN25

  • Stainless steel (AISI 316)
  • High durability
  • Manual locking ring for extra security


Series 526 is a family of quick couplings for hydraulic systems. A manually operated locking ring provides extra security against involuntary disconnection. All parts in both couplings and nipples are made of stainless 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″). For a steel version see Series 525.

Technical data

Temperature range:-20°C — +205°C (-4°F — +401°F)
Material coupling:Stainless steel, AISI 316
Material nipple:Stainless steel, AISI 316
Material seal:Viton (FPM)
Connectability:Without pressure
Disconnection under pressure:Not allowed
Max. working pressure connected:200 bar (2900 PSI)
Max. working pressure disconnected:150 bar (2175 PSI)
Min. burst pressure connected:800 bar (11603 PSI)
Min. burst pressure disconnected:600 bar (8702 PSI)

Rated flow is measured at 0.4 MPa pressure drop.

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Technical data:

CouplingsPart No.ConnectionLengthDiameterHexagonSeal
Female thread10 526 1219G 1″926248FPM
NipplesPart No.ConnectionLengthDiameterHexagonSeal
Female thread10 526 6219G 1″56.54845FPM