They have a litre scale and a black screw cap

liquid transfer

2 pump connections (Hose 4/6 mm 3)

T-pieces are intended for use in hose installations to allow the following installations:

ddc 15 4 ar pv v c f 32u2u2fg 97721521 They have a litre scaleDDC 15 4 AR PV V C F 32U2U2FG The SMART Digital DDC is a compact positive displacement, diaphragm dosing pump with variable speed drive (stepper motor) and intelligent control electronics with minimum energy consumption. The SMART Digital Dosing series operates at full stroke length to ensure optimum accuracy, priming and suction, even for high viscosity or degassing liquids. The duration of each discharge stroke varies according to the capacity set,