APQ ALTON regulators are designed to regulate gas for medium and high pressure applications. They use a direct action type of regulation with a balanced seat disc, membrane action and adjustment spring. They are used both for Natural gas, LPG and other non-corrosive gas installations as well as stage 1 regulators. They can also be fitted with a VIS safety valve with minimum and maximum pressure - this model is the ALTON. It consists of the regulator with the output pressure gauge fitted as an option and the block group, in model ALTON.
