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Series 526, DN12.5

  • 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 20 (3/4″) and DN 25 (1″). 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:300 bar (4351 PSI)
Max. working pressure disconnected:250 bar (3625 PSI)
Min. burst pressure connected:1200 bar (17404 PSI)
Min. burst pressure disconnected:1000 bar (14503 PSI)

Rated flow is measured at 0.4 MPa pressure drop.

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Technical data:

CouplingsPart No.ConnectionLengthDiameterHexagonSeal
Female thread10 526 1215G 1/2″67.64133FPM
NipplesPart No.ConnectionLengthDiameterHexagonSeal
Female thread10 526 6215G 1/2″42.52927FPM