For over 50 years the Herion brand has specialised in solenoid valves and associated equipment for both pneumatic and hydraulic applications. Our Herion brand offers comprehensive ranges of solenoid valves, NAMUR valves, pressure switches and press safety valves, along with a range of specialised hydraulic valves and solutions that are ideally suited to aggressive and harsh environments and come with a range of global approvals including ATEX and SIL.