Deublin – 1690‑000‑168 – Low‑Speed Duoflow Rotary Union, G1″ RH → ¼″ NPT

The Deublin 1690‑000‑168 is a heavy-duty, self‑supported rotary union designed for low-speed transfer of air, hydraulic oil, brake fluid, and vacuum across rotating connections. Featuring a durable aluminum housing and steel rotor with hardened sealing surfaces and composite bearings, this union supports multi-passage configurations and vented fluid flow to ensure reliable performance in industrial and hydraulic applications.

Key Features

• Model / P/N: 1690‑000‑168

• Design: Duoflow, self-supporting rotating union with composite bearings and vent holes between passages  

• Fluid Channels: Triple‑passage tandem capable

• Connections:

  • Rotor: G 1″‑11 RH BSP threaded

  • Housing: ¼″‑18 NPT port(s)  

• Materials: Aluminum body; steel rotor; Teflon/carbon seals  

• Performance Ratings:

  • Max rotational speed: 250 rpm

  • Max pressure: 10 bar (air/vacuum), 207 bar (hydraulic oil)  

  • Temperature range: up to 121 °C

  • Max airflow: ~1,132 L/min (air)