Low Pressure Disconnection
Quick disconnect couplings with no-spill on disconnection up to 0.5kgf/cm2 (7psi) of pressure.
QD2 Series
The QD2 series includes couplings for 6mm (1/4 inch) internal diameter hose. Low pressure no-spill quick disconnect couplings which push to connect with a negligible amount of coolant freed.
ID: 06mm (1/4in)Threaded
QD3 Series
The QD3 series includes couplings for 10 to 13mm (3/8 to 1/2 inch) ID hose, is the most popular size, and has the widest range of fittings. Low pressure no-spill quick disconnect couplings which push to connect with a negligible amount of coolant freed.
ID: 10mm (3/8in)
ID: 13mm (1/2in)Threaded
QD4 Series
The QD4 series includes couplings for 13mm (1/2 inch) ID hose and is physically the largest size. Low pressure no-spill quick disconnect couplings which push to connect with a negligible amount of coolant freed.
ID: 13mm (1/2in)Threaded 
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