Regular Coupler, Male Half, , 462.00 cu in Max Flow Capacity

No mechanical interlock prevents disconnection under pressure on this coupler. The requirement is purely procedural: the system must be fully depressurized before coupling or uncoupling. That's a firm operating rule for this product, not just a general best practice. Running it pressurized during connection or disconnection is the kind of thing that causes exactly what you described. Make sure everyone on the crew knows the sequence before the line ever gets charged.

Built for small cylinders and hand pumps, this male half regular coupler is a good fit when you are working with compact high pressure hydraulic setups.