PROPORTIONAL VALVE FOR REGULATING GAS IN AN INSTANTANEOUS WATER HEATER AND REGULATING DEVICE THEREOF

摘要

A proportional valve (4) for regulating gas in an instantaneous water heater is provided with a valve body (16) with a gas feed conduit (21) extending along a longitudinal axis (A), and a shoulder (25) transversal to the longitudinal axis (A); a shutter (17), which is movable with respect to the valve body (16) in a direction parallel to the longitudinal axis (A), extends along the longitudinal axis (A), and is designed to define a first and second assembly position in the valve body (16), to regulate a first and second type of gas, respectively.