The COAX HPB Pressure Limitation Valves are manually operated, externally controlled valves designed to handle pressure ranges from PN 0 to 200 bar. Available in orifice sizes DN 8 to 65, they come with threaded or flanged ports and are made from brass or galvanised steel with NBR, PTFE, FPM, or specialised sealing materials. Suitable for controlling liquid, highly viscous, or contaminated media, these valves support DC 24 V and AC 230 V power, with optional spring return for added flexibility in operation.