NF M88-779:2013 Installations for liquid hydrocarbons - Pressure regulators and automatic change-over devices for domestic butane- and propane-gas-burning installations having a regulated pressure of 4 bar and a flow rate less or equal to 100 kg/h
2014NF M88-781:2014 Installations for liquid hydrocarbons - Pressure regulators, automatic change-over devices, having a maximum regulated pressure of 4 bar, with a maximum capacity of 150 kg/h, associated safety devices and adaptors for butane, propane, and their mixtures -
2013NF M88-779:2013 Installations for liquid hydrocarbons - Pressure regulators and automatic change-over devices for domestic butane- and propane-gas-burning installations having a regulated pressure of 4 bar and a flow rate less or equal to 100 kg/h