Gas Appliance Pressure Regulators with integrated gas filter
FRI/6 Series

Description
The FRI/6 balancing type pressure regulator combines a pressure regulator and a 50 micron gas filter in one housing. Various combinations are possible using the FRI/6 with the most of the DMV shutoff valves for a compact, modular system:
- Stand-alone pressure regulator and gas filter with threaded flanges, or direct mount to DMV sizes 701, 702 and 703 series safety shutoff valves.
- Regulator output pressure monitored by direct mounting an A2 type pressure switch. Additional ports to sense inlet and outlet pressure are also located on the threaded flanges.
- Heavy duty diaphragm construction for durability and strength.
- Steady, precise and instantaneous regulation of the outlet pressure.
- Lock-up type regulator (see page 2 and 3 for details).
- Factory installed vent limiter. Review applicable codes for vent line requirements.

Application
The FRI/6 pressure regulator is recommended for industrial and commercial heating applications and is suitable for natural gas, propane, butane, air and inert gases. Suitable for up to 0.1 % by volume, dry H₂S.

A “dry” gas has a dew point lower than +15 °F and its relative humidity is less than 60 %.

FRI/6 Balancing type, spring-loaded pressure regulator with adjustable setpoint spring. Internal sensor for regulating output pressure.Integrated 50 micron gas filter. Direct mounting of A2 pressure switch possible.