630 Series
2
Specifications
The Specifications section lists the specifications for the 630 Series constructions.
Available Configurations
Type 630:
Spring-loaded reducing regulators
Type 630R:
Spring-loaded relief valves
Body Size
1 and 2 in. / DN 25 and 50
End Connection Style
NPT, ASME CL150 RF, CL300 RF or CL600 RF
Maximum allowable Inlet Pressures
(1)
Type 630 Regulators:
See Table 1
Type 630R Relief Valves:
See Table 3
Type 630 Outlet Pressure Ranges
(1)
3 to 500 psig / 0.21 to 34.5 bar with intermediate
values shown in Table 2
Type 630R Relief Pressure Ranges
(1)
3 to 250 psig / 0.21 to 17.2 bar
See Table 3
Maximum allowable Outlet Pressures
(1)
See Table 2
Maximum allowable Pressure Drops
(1)
See Table 1
Pressure Registration
Internal
Spring Case Vent
1/4 NPT
Material Temperature Capabilities
(1)
Standard:
-20 to 180°F / -29 to 82°C
Optional:
-20 to 300°F / -29 to 149°C
Orifice Sizes
1/8, 3/16, 1/4, 3/8 or 1/2 in. /
3.18, 4.76, 6.35, 9.53 or 12.7 mm
Coefficients for Relief Valve Sizing
ORIfICE SIzE
C
g
C
V
C
1
In.
mm
1/8
3/16
1/4
3/8
1/2
3.18
4.76
6.35
9.53
12.7
13.9
31.3
55.1
122.5
216.0
0.49
1.11
2.03
4.61
8.18
28.4
28.2
27.2
26.6
26.4
approximate Weights
1 In. End Connection:
25 lbs / 11.3 kg
2 In. End Connection:
30 lbs / 13.6 kg
1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.
Vents
!
WaRnIng
When the unit is installed in an enclosed
area or indoors, escaping gas may
accumulate and be an explosion hazard.
Under these conditions the vent should
be piped away from the unit to a freely
ventilated outdoor location away from
air intakes, windows, etc. Protect all vent
openings against weather or the entrance
of any foreign material that may plug the
vent or affect operation of the regulator
or relief valve. Inspect all vent openings
periodically to be sure they are not
plugged. If the vent is in an environment
where freezing rain, ice or snow could
clog the vent, it is recommended that a
weatherproof vent be used.
Spring-loaded constructions have a screened vent
assembly (key 27, Figures 4, 5 and 6) installed in the
1/4 NPT spring case vent opening. If a remote vent
is required, remove the vent assembly and install a
remote vent line.
Overpressure Protection
As is the case with most regulators, the Type 630 spring-
loaded regulators have outlet pressure ratings that are
lower than the inlet pressure ratings. Overpressure
protection must be provided if the actual inlet pressure
can exceed the outlet pressure rating. Overpressure
protection is also required for the loading regulator and
main regulator spring case of relief valves.
Refer to the following tables to determine pressure ratings:
1. Spring-loaded Type 630 regulators.
a. Inlet pressure and pressure drop—Table 1.
b. Outlet pressure—Table 2.
2. Spring-loaded Type 630R relief valve pressure
Table 3.
!
WaRnIng
Overpressuring any portion of this
equipment may cause damage to
regulator parts, leaks in the regulator
or personal injury due to bursting of
pressure-containing parts or explosion
of accumulated gas.
