DANFOSS / EATON COUPLING

Ball lock internals handle the connection hold, and a sleeve lock adds a secondary safety layer so it won't back off under pressure or vibration. No tools needed at any point, either connecting or disconnecting. That's one of the main reasons this style gets used for diagnostic pressure testing work, where techs are swapping lines in and out regularly.

This Eaton Aeroquip coupling is designed to exceed ISO 16028 operating pressures, which should give you confidence in its reliability for diagnostic pressure testing.

For diagnostic pressure testing, this is the male half of a quick disconnect coupling with a push to connect end. It uses a ball lock internal connection and has a sleeve lock safety mechanism to help keep it from coming loose.