Data Sheet

38
CommerCial serviCe overpressure proteCtion
TYPE CS404
TYPE CS803
Type CS403 with Integral
True-Monitor™ Protection
1-1/4-inch FNPT to 2-inch FNPT Body Sizes
(2-inch / DN 50, CL150 Flange Available)
7.65 to 8.44M BTU per hour / 85.9 to 94.8 SCMH
Internal Registration
Type CS403: Combines operation of a conventional two-regulator
wide-open monitor set into one body. During normal operation, the
monitor is in a wide open state at a setpoint higher than the primary
regulator. If the downstream pressure should rise due to loss of
control by the primary regulator, the integral monitor will assume
control and regulate the fl ow to the downstream system.
See Selection Guide on page 39 for available options.
Type CS404 with Integral Slam shut
1-1/4-inch FNPT to 2-inch FNPT Body Sizes
(2-inch / DN 50, CL150 Flange Available)
7.65 to 8.44M BTU per hour / 85.9 to 94.8 SCMH
Internal Registration
Type CS404: Integrates a fast acting shutoff device that provides
overpressure shutoff (OPSO) or over/underpressure shutoff (UPSO/
OPSO) protection by completely shutting off the fl ow of gas to the
downstream system. The Slam Shut operates independently of
the main regulator and does not affect normal operation unless the
downstream pressure fl uctuates outside of the desired ranges.
See Selection Guide on page 39 for available options.
Types CS803 and CS823 with Integral
True-Monitor™ Protection
1-1/2-inch FNPT and 2-inch FNPT Body Sizes
(2-inch / DN 50, CL150 Flange Available)
10.46 to 21.44M BTU per hour / 118 to 241 SCMH
Internal Registration
Type CS803: Designed to deliver less than 1 psig, the Type CS803
combines operation of a conventional two-regulator wide-open
monitor set into one body. During normal operation, the monitor is
in a wide open state at a setpoint higher than the primary regulator.
If the downstream pressure should rise due to loss of control by
the primary regulator, the integral monitor will assume control and
regulate the fl ow to the downstream system.
Type CS823: Equipped with the same technolgy as the Type CS803,
the Type CS823 delivers up to 5.5 psig / 0.38 bar operating pressures.
See Selection Guide on page 39 for available options.
PRIMARY
SETPOINT
MONITOR
SETPOINT
MONITOR SPRING RANGE
Inch w.c. mbar Inch w.c. / mbar Spring Range
11 / 27 21 / 52 16 to 23 inches w.c. / 40 to 57 mbar
2 psig / 0.14 bar 2.5 psig / 0.17 bar 1.5 to 2.5 psig / 0.10 to 0.17 bar
5 psig / 0.35 bar 6 psig / 0.41 bar 4 to 7.5 psig / 0.28 to 0.52 bar
PRIMARY
SETPOINT
MONITOR
SETPOINT
MONITOR SPRING RANGE
Inch w.c. mbar Inch w.c. / mbar Spring Range
11 / 27 21 / 52 16 to 23 inches w.c. / 40 to 57 mbar
2 psig / 0.14 bar 2.5 psig / 0.17 bar 1.5 to 2.5 psig / 0.10 to 0.17 bar
5 psig / 0.35 bar 6 psig / 0.41 bar 4 to 7.5 psig / 0.28 to 0.52 bar
PRIMARY
SETPOINT
SLAM-SHUT SETPOINT
OPSO UPSO - OPSO
Inch w.c. / mbar Inch w.c. / mbar Inch w.c. / mbar
7 / 17 17 / 42 - - - -
11 / 27 19 / 47 6.3 / 16 - 25 / 62
14 / 35 30 / 75 8.8 / 22 - 28 / 70
1 psig / 0.07 bar 1.9 psig / 0.13 bar 16 / 40 - 1.9 psig / 0.13 bar
2 psig / 0.14 bar 3.3 psig / 0.23 bar 1 psig / 0.07 bar - 3.2 psig / 0.22 bar
5 psig / 0.35 bar 6.7 psig / 0.46 bar 2.9 psig / 0.20 bar - 7.5 psig / 0.52 bar
TYPE CS403
TYPE CS403
TYPE CS404
TYPE CS803