Data Sheet
Bulletin 71.1:S200
2
The quick-reacting S200 Series pressure reducing service regulator is typically used in an industrial or
commercial installation to minimize the shock effect of sudden downstream load changes that might otherwise
activate safety shutoff equipment. In such an installation, where gas consumption varies from almost nothing to
several thousand standard cubic feet per hour (SCFH) (or normal cubic meters per hour (Nm
3
/h)), snap-acting
solenoid valves can cause sudden load changes. The resulting shock pressures and regulator instability can
cause safety equipment to shut the installation down. But with an S200 Series regulator, transmission of shock
loads to downstream equipment is reduced, thereby helping maintain downstream pressures within desired limits.
The S200 Series regulators are available in several different congurations to meet the demands of varying
services and overpressure protection requirements. Each conguration is made up of different construction
features. The following section describes the available construction features.
—The S200 Series has a
wide range of outlet pressure settings from
2 inches w.c. to 10 psig / 5 mbar to 0.69 bar
.
—
The S200 Series can maintain outlet pressure
accuracy for applications that require
downstream pressure to be held within
± 1 % absolute pressure. See Tables 7
through 11.
—The Types S202,
S202H, S202P, S206, S206H, and S209
have internal relief across the diaphragm
to help minimize overpressure.
Figure 2. Type S201 Regulator (Basic S200 Series Construction)