The COAX VMK-H / VFK-H High Pressure Coaxial Valves are externally controlled 3/2-way valves designed for demanding applications, supporting pressures up to 200 bar and available in orifice sizes from DN 15 to 50. With a pressure-balanced structure, spring return, and switching overlap, these valves are suited for gaseous, liquid, highly viscous, and contaminated media. Constructed with galvanised, nickel-plated, or stainless steel bodies, they offer threaded or flanged ports and use NBR, PTFE, FPM, CR, EPDM, and specialised seal materials.