Air Pressure Maintenance Device
The h 1 is utilized in applications where there is a compressed air or nitrogen.
Air pressure maintenance device. Series 757 firelock air maintenance trim assembly. Reduces high pressure supply air through the integral regulator to recommended air pressure based on the water supply pressure. The regulator in the model a pmd reduces higher pres. It is used to control the supervisory air pressure in a dry pipe sprinkler system preaction system or dry pilot line system of a dry pilot sprinkler actuated deluge or preaction valve.
Globe s model h 1 air pressure maintenance device is an automatic field adjustable device of the pressure reducing type. Model h 2 and h 3 air pressure maintenance device. Air pressure maintenance device model d 2 the viking model d 2 air pressure maintenance device is a pressure regulator that automatically reduces the supply air pressure to a preset requirement when connected to a constantly maintained air supply. The automatic air maintenance device is a ul listed and fm approved assembly of valves nipples fittings and actuators to automatically control the air pressure in the piping of dry pipe sprinkler systems preaction sprinkler systems or dry pilot actuated deluge systems.