The Vacusill 2 HV High Flow Suction Regulator is a robust and accurate unit. Specifications: Materials: Body in ABS-PC, vacuum guage cover in PC. O-rings in NBR and silicone, pneumatic mechanismin POM. inlet thread connection in chromed plated brass. Fast ON/OFF switch Water trap (made in polycarbonate with safety valve and particles filter) Range: 0-100 kPa - 0-750 mmHg Precision: ± 5% Flow: 90 L/min Dimensions: 240 x 86 x 86mm Weight: 310g The Vacusill 2 LV Low Flow Suction Regulator is a robust and accurate unit. Specifications: Materials: Body in ABS-PC. vacuum guage cover in PC, Orings in NBR and silicone, pneumatic mechanismin POM, inlet thread connection in chromed plated brass. Fast ON/OFF switch Water trap (made in polycarbonate with safety valve and particles filter) Range: 0-20 kPa 0-150 mmHg Precision: ± 5% Flow: 60 L/min Dimensions: 240 x 86 x 86mm Weight: 360g