Ball Valves are used for liquid and gas application of air conditioning and refrigerantion systems. 

Essen has various ball valve line up for Co2, HCFC, HFC. 

Size of standard models are up to 4-1/8" and they are suitable for low GWP refrigerant as like R290, A2L. 

The SRBV series which combine the stanard model with a sight glass can give installer convenience by reducting brazing point. 

Recently, Essen came  up with ball valve with charge port for transcritical system (Co2). It shall provide new option to user for transcritical system.