WEH® TRN1-S4 Flat-Face Plug-in Fitting, 400 bar, G3/4" female thread, DN 16


After 5 Substitutions, It`s Over!But Not with WEH® Flat-Face Couplings.

The secret of a very good coupling system lies in the quality and functionality of the individual components and their ingenious interaction.

For the WEH® Flat-Face Quick Connect Couplings, we also focus on the part of the plug nipple. Because the fact that our coupling system can withstand hard impacts with dynamic force (hammer strikes up to 8 tons) and sudden changes in flow direction is also due to the special quality of the plug nipple.

The Flat-Face plug-in fitting TRN1 is optimized during the manufacturing process using the case hardening method. This allows us to achieve maximum possible surface hardness on the entire front part of the nipple. A real advantage in demanding applications and a real competitive advantage compared to other providers.

With WEH® Flat-Face Quick Connect Coupling, you work quickly, easily, cleanly, and safely. Our couplings significantly exceed the requirements of the applied ISO 16028 standard in many aspects.

Nominal bore (DN)
16 mm
Max. allowable operating pressure PS
400 bar
Temperature range
-30 °C up to +100 °C
Steel (Zinc/nickel, passivated zinc)
Sealing material
One-hand actuation possible,
Decoupling not permitted under pressure
Conformity / Tests / Approvals
Compatible with all coupling systems in accordance with ISO 16028
Marketing Features
  • Flat-sealing design
  • Safety lock
  • Single-hand operation
  • Coupling possible under residual pressure
  • Reduced contamination of hydraulics systems
  • Leak-free decoupling
  • High performance

Quick connect coupling system for fast and leak-free connection and disconnection of hydraulic lines.

CAD Files
Data sheets
Data sheet EN 295 KB
Data sheet DE 293 KB
Data sheet FR 305 KB
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