Description
Emerson Fisher 627M Direct-Operated Monitor Regulators are for low and high-pressure systems. These regulators can be used with natural gas, air or a variety of other gases. Used in Commercial and Industrial high-pressure applications like factories, office buildings, restaurants, etc.
Monitoring is overpressure control by containment. When the working pressure reducing valve ceases to control the pressure, a second regulator installed in series, which has been sensing the downstream pressure, goes into operation to maintain the downstream pressure at a slightly higher than normal pressure. When selecting regulators for use in a monitor system, the upstream regulator must have a control line. When determining the capacity of a monitor system you will get approximately 70% to 73% of the capacity of a single regulator when using the same regulator for both regulators in the system.
This product is backed by a 10 year warranty.
Note: Fisher Type 627 regulators do not have an internal relief and should be installed with additional/external overpressure protection. These units should not be installed as part of a two-stage system in fixed piping serving 14 in. w.c. (35 mbar) appliance systems unless additional overpressure protection is installed that will make the system complaint with NFPA 58 requirements for a two-stage system.
