Quick connect coupling 450B Cupla 450B-3S, steel - Nitto Kohki 369803006

In high pressure hydraulic circuits the connection has to hold under impact and vibration. The Nitto Kohki 450B Cupla works up to 44.1 MPa (450 kgf/cm², 441 bar) and shuts off on both sides when it is disconnected.

• Working pressure up to 44.1 MPa (450 kgf/cm², 441 bar, 6400 PSI)
• Two-way shut-off, socket and plug both carry automatic metal-touch valves so no oil spills out on disconnection
• Metal-touch valves with no rubber in the seat, which improves durability
• Sleeve stopper mechanism prevents accidental disconnection under vibration or impact
• Stand-alone leakage rate of 0.1 mL/min at 0.3 MPa on either socket or plug
• Body in nickel-plated special steel, seal in NBR (SG) for -20 °C to +80 °C, FKM (X-100) for -20 °C to +180 °C made to order

Technical data

Applications

• Hydraulic units running at high system pressure
• Changing hydraulic tools on the pressure line
• Coupling points exposed to vibration or impact
• Hydraulic oil lines in 3/8" and 1/2" sizes

Compatibility

Different sizes are not interchangeable. When coupled, fluid may flow in either direction, and the connection is operational in vacuum down to 1.3 Pa.

Standards and compliance

End sizes are 3/8" and 1/2", maximum tightening torques are 40 Nm at 3/8" and 85 Nm at 1/2", and the body material is nickel-plated special steel.