0X00119-F
Figure 1.
Spring-Loaded Type 630 Regulator - Low-Pressure Construction
REGULATOR
CONSTRUCTION
RELIEf (INLET) PRESSURE SETTINGS
MAXIMUM ALLOWABLE RELIEf
(INLET) PRESSURE
MAXIMUM EMERGENCY INLET
(CASING) PRESSURE
(1)
bar
psig
bar
psig
Low-Pressure
0.21 to 0.55
0.41 to 1.2
1.0 to 1.5
1.4 to 2.4
2.4 to 3.5
3 to 8
6 to 17
15 to 22
20 to 35
35 to 50
Relief Pressure Setting Plus Maximum
Allowable Build-up of
1.7 bar / 25 psig
5.2
75
High-Pressure
2.1 to 4.8
3.5 to 6.6
5.2 to 12.1
10.3 to 17.2
30 to 70
50 to 95
75 to 175
150 to 250
Relief Pressure Setting Plus
Maximum Allowable Build-up of
17.2 bar / 250 psig
37.9
550
1. Leakage or bursting of pressure-containing parts may occur if inlet pressure exceeds these values.
Table 3.
Type 630R Relief Pressure Ranges
Startup
The regulator is factory set at approximately
the midpoint of the spring range or the pressure
requested, so an initial adjustment may be required
to give the desired results. With proper installation
completed and relief valves properly adjusted, slowly
open the upstream and downstream shutoff valves.
Adjustment
To change the set pressure, remove the closing
cap or loosen the locknut and turn the adjusting
screw clockwise to increase set pressure or
counterclockwise to decrease pressure. Monitor the
set pressure with a test gauge during the adjustment.
Replace the closing cap or tighten the locknut to
maintain the desired setting.
Taking Out of Service (Shutdown)
!
To avoid personal injury resulting from
sudden release of pressure, isolate
the regulator from all pressure before
attempting disassembly.
30
8
7
9
6
5
4
3
2
1
10
9
11
12
13
14
15
16
17
18
19
20
21
22
23
27
34
35
A
630 Series
3
