Features
•
Internal Relief Valve
—Types 627R, 627LR, and
627MR regulators have an internal relief valve, which
in many cases eliminates the usual requirement for
an external relief valve, thereby reducing equipment
and maintenance costs. Refer to the Specifications
section for performance data.
•
Types 627R, 627LR, and 627MR Travel Stop
— The
internal relief valve still works if the disk or
linkage fails.
The pusher post (Figure 6) contacts
the travel stop of
the lever retainer and, as the diaphragm continues to
rise, it opens the relief valve.
•
Relief Operation Indicator
—A rubber cap (Figure 7)
slipped on the vent assembly pops off when the relief
valve opens, indicating the relief valve has opened
since the last inspection.
•
Easy to Maintain
—Trim parts can be replaced without
removing the regulator body from the pipeline. A
two-bolt connection between the body
and diaphragm
casing simplifies disassembly for maintenance
