T208VR Series
5
Table 1.
Vacuum Control Pressure Ranges
VaCUUM COnTrOL
PrESSUrE rangE SPring ParT
nUMBEr
SPring
COLOr
BaCK DiSK
SPring ParT
nUMBEr
CHangE in
COnTrOL PrESSUrE
TO WiDE-OPEn
SPring WirE
DiaMETEr
SPring FrEE
LEngTH
MaXiMUM
inLET
VaCUUM
MaXiMUM
OUTLET
VaCUUM
psig
/
bar
psig / bar
Inch / mm
Inch / mm
psig / bar
psig / bar
0 to 4 inches w.c. /
0 to 10 mbar
(1)
0N039427222 Unpainted 1E984637022
1 inch w.c./
2 mbar
0.062 /
1.57
3.063 /
77.80
5.1 psig /
0.35 bar
7.5 psig /
0.52 bar
0.05 to 0.75 /
3.5 to 52 mbar
0N086027022 Unpainted
18B0911X012
5.5 inches w.c. /
14 mbar
0.105 /
2.67
2.500 /
63.50
5.7 psig /
0.39 bar
7.5 psig /
0.52 bar
0.15 to 1.75 /
10 to 121 mbar
0N086127022 Unpainted
0.44 /
0.03
0.125 /
3.17
2.500 /
63.50
6.5 psig /
0.45 bar
7.5 psig /
0.52 bar
0.25 to 2.75 /
17 to 190 mbar
0N022027022 Dark green
0.63 /
0.043
0.135 /
3.43
2.500 /
63.50
7.4 psig /
0.51 bar
7.5 psig /
0.52 bar
1.5 to 4.75 /
0.10 to 0.33
0N004327022
Yellow
1.44 /
0.10
0.162 /
4.12
2.500 /
63.50
9.2 psig /
0.63 bar
7.5 psig /
0.52 bar
3 to 12.8 /
0.21 to 0.88
1D141827012
Blue
3.88 /
0.27
0.207 /
5.26
2.500 /
63.50
12.0 psig /
0.83 bar
12.0 psig /
0.83 bar
1. Do not use fluorocarbon (FKM) diaphragm with this spring at diaphragm temperatures lower than 60°F / 16°C.
Startup, adjustment and Shutdown
note
The Specifications section and
Table 1 provide the maximum
pressure capabilities for each vacuum
regulator construction. Use pressure
gauges to monitor inlet pressure and
outlet pressure during startup and
adjustment procedures.
Startup
1.
Slowly open the downstream (outlet) shutoff valve,
if used, to vacuum regulator and leave it fully open.
2.
Slowly open the upstream (inlet) shutoff valve
(for Type T208VRM, open the control line shutoff
valve first followed by the upstream shutoff valve)
between the tank and vacuum regulator.
3. Use gauges to monitor pressure.
adjustment
1.
Remove the closing cap (key 22) and turn the
adjusting nut (key 20) clockwise to increase the
pressure setting or counterclockwise to decrease
the setting. Use gauges to monitor pressure.
2.
Replace the closing cap (key 22) after making
this adjustment.
3.
If desired, the closing cap (key 22) may be wired
to the hole provided in the spring case (key 3) to
discourage tampering.
Shutdown
1. Close the nearest upstream shutoff valve.
2. Close the nearest downstream shutoff valve.
3. Open the vent valve between the equipment and
the downstream shutoff valve nearest to it. All
pressure between these shutoff valves is released
through the open vent valve.
Maintenance
Equipment parts are subject to normal wear and must
be inspected and replaced as necessary. The frequency
of inspection and replacement of parts depends upon
the severity of service conditions or the requirements
of local, state and federal regulations. Due to the
care Regulator Technologies takes in meeting all
manufacturing requirements (heat treating, dimensional
tolerances, etc.), use only replacement parts
manufactured or furnished by Regulator Technologies.
