Download Emerson CP400 Data Sheet

Bulletin 71.1:CP400
TYPE 67CP PRESSURE
LOADING REGULATOR
CLOSING
SPRING
DIAPHRAGM
HEAD
DIAPHRAGM
LOWER
CASING
VALVE STEM
P1562
ORIFICE
EXTERNAL
CONTROL LINE
PLUG (DO NOT
REMOVE IF
UNIT IS
PRESSURIZED)
LEVER
VALVE DISK
Figure 2. Typical CP400 Regulator Cut-away View
Introduction
The CP400 Series pressure loaded regulators have
been engineered to fit a multitude of pressure-reducing
applications including light industrial and commercial
installations, which include accurate control for
use in pressure-factor measurement (fixed factor
billing) applications. This flexibility is provided by the
numerous body end connection sizes, body materials,
outlet pressure settings, orifice sizes, as well as the
option for internal or external pressure registration.
In addition to application flexibility, the CP400 Series
offers multiple overpressure protection options to meet
your demands on application requirements.
Overpressure Protection
Options Available:
• Token Relief – Provides a small capacity or token
relief located in the Type 67CPR loading regulator
that relieves minor overpressure caused by thermal
expansion or minor nicks in the orifice or disk.
• True-Monitor™ Protection – Combines the
operation of a conventional two regulator wideopen monitor set into one body. Provides a second
monitoring regulator to control downstream
pressure. In the event of failure of the primary
regulator due to damage to the lever, downstream
sense line, orifice, disk, diaphragm, etc., the
monitoring regulator will assume control of the
downstream pressure and regulator flow.
• Slam-Shut Protection – Discontinues gas service
by shutting the gas off if there is an overpressure or
underpressure condition.
2