German VALVOLE HOFMANN valves VALVOLE HOFMANN models VALVOLE HOFMANN prices

VALVOLE HOFMANN valves are valves that reduce the inlet pressure to a required outlet pressure through regulation and rely on the energy of the medium itself to automatically maintain stable outlet pressure. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element with variable local resistance, i.e., by changing the throttling area, the flow velocity and kinetic energy of the fluid are altered, causing different pressure losses, thereby achieving pressure reduction. Then, through the adjustment of the control and regulation system, the fluctuation of the pressure downstream of the valve is balanced with the spring force, keeping the downstream pressure within a certain error