Get current pricing for Dunham-bush, 30 Ton Dunham-Bush C 30 Ton Dunham-bush Portable Chiller. Model Ipwl-030-0. High Side Pressure 400 Psi, Low Side Pressure 135 Psi. 460 Volt 3 Phase, 60 Hz. Control Vo . Product Category: Process Equipment, Sub Category: Industrial Chillers: