Instruction Manual
Form 1243
December 2015
630 Series Regulators and Relief Valves
Introduction
Scope of Manual
This Instruction Manual provides operating, installation,
maintenance and parts information for the 630 Series
regulators and relief valves.
Description
The 630 Series consists of self-operated, spring
loaded Type 630 Big Joe® pressure regulators and
Type 630R relief valves, which are designed for
maximum inlet pressures to 1500 psig / 103 bar and
outlet pressures from 3 to 500 psig / 0.21 to 34.5 bar.
630 Series
Installation
WARNING
!
Personal injury, property damage,
equipment damage or leakage due to
escaping gas or bursting of pressurecontaining parts may result if this
regulator is overpressured or is installed
where service conditions could exceed
the limits given in Specications
section, Tables 1 through 3 or where
conditions exceed any ratings of the
adjacent piping or piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required by the appropriate
code, regulation or standard) to prevent
service conditions from exceeding
those limits.
W1934
Figure 1. Spring-Loaded Type 630 Regulator
Additionally, physical damage to the
regulator could cause personal injury or
property damage due to escaping gas.
To avoid such injury or damage, install
the regulator in a safe location.
Before installing, inspect the unit for any damage and
any foreign material. The regulator or relief valve may
be mounted in any position, however, ensure that the
ow direction corresponds with the direction of the
arrow on the nameplate. Apply a good grade of pipe
compound to the male threads of the pipeline.
D100300X012
www.fisherregulators.com
630 Series
Specications
The Specications section lists the specications for the 630 Series constructions.
Available Congurations
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
1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.
Pressure Registration
Internal
Spring Case Vent
1/4 NPT
Material Temperature Capabilities
Standard: -20 to 180°F / -29 to 82°C
Optional: -20 to 300°F / -29 to 149°C
Orice 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
Coefcients for Relief Valve Sizing
ORIFICE SIZE
In. mm
1/8
3/16
1/4
3/8
1/2
3.18
4.76
6.35
9.53
12.7
Approximate Weights
1 In. End Connection: 25 lbs / 11.3 kg
2 In. End Connection: 30 lbs / 13.6 kg
C
13.9
31.3
55.1
122.5
216.0
(1)
C
g
V
0.49
1.11
2.03
4.61
8.18
C
28.4
28.2
27.2
26.6
26.4
1
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 springloaded 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.
2
630 Series
Table 1. Maximum Allowable Inlet Pressures and Pressure Drops
MAXIMUM ALLOWABLE PRESSURE DROP
ORIFICE SIZE
MAXIMUM ALLOWABLE
INLET PRESSURE
(1)
Nylon (PA)
Polytetrauoroethylene
In. mm psig bar psig bar psig bar psig bar
1/8 and 3/16 3.2 and 4.8
1/4 6.4 1000 69
1500 103
1500 103
3/8 9.5 1000 69 500 34.5 500 34.5
1/2 13 750 51.7 250 17.2 250 17.2
Note: Maximum inlet pressure not exceeded 1500 psig / 103 bar.
1. Inlet pressure must not exceed the sum of the actual outlet pressure setting and the maximum allowable pressure drop. For example, with an outlet pressure setting of 200 psig / 13.8 bar
and a 3/8 in. / 9.5 mm orice with a maximum allowable pressure drop of 500 psid / 34.5 bar d, the maximum inlet pressure is 700 psig / 48.3 bar.
2. Nitrile (NBR) valve disks are normally furnished for pressure drops to 200 psi / 13.8 bar, differential. For better erosion resistance, Nylon (PA) valve disks are normally furnished for
higher
pressure drops. Some erosion of valve disks occurs at all pressure drops due to solid particles in the ow stream. The rate of erosion is higher with large amounts of impurities in the
ow stream and with high pressure drops. Valve disks and other regulator parts must be inspected periodically for erosion and damage and must be replaced as necessary.
Table 2. Type 630 Regulator Outlet Pressure Ranges and Maximum Outlet Pressures
REGULATOR
CONSTRUCTION
Low-Pressure
High-Pressure
1. Damage to internal parts of the regulator may occur if outlet pressure exceeds the actual pressure setting by amounts greater than those shown in this column.
2. For outlet pressure settings to 25 psig / 1.72 bar only. For pressure settings over 25 psig / 1.72 bar, outlet pressure is limited by maximum emergency outlet pressure of 45 psig / 3.10 bar.
3. For outlet pressure settings to 350 psig / 24.1 bar only. For pressure settings over 350 psig / 24.1 bar, outlet pressure is limited by maximum emergency outlet pressure of 550 psig / 37.9 bar.
4. Leakage or bursting of pressure-containing parts may occur if outlet pressure exceeds these values.
OUTLET PRESSURE RANGE
psig bar psig bar psig bar psig bar
3 to 10 0.21 to 0.69 0W019227022 10 0.69
8 to 20 0.55 to 1.38 0W019127022 20 1.38
17 to 30 1.17 to 2.07 0W019027022 30 2.07 20
27 to 40 1.86 to 2.76 0Y066427022 40 2.76
27 to 50
46 to 95
90 to 150
150 to 200
200 to 275
275 to 500 19.0 to 34.5 1K370927082 500 34.5 200
1.86 to 3.45
3.17 to 6.55
6.21 to 10.3
10.3 to 13.8
13.8 to 19.0
SPRING PART
NUMBER
0W019227022
0W019127022
0W019027022
0Y066427022
1J146927142
(2)
and
(PTFE) Disk
MAXIMUM OPERATING
OUTLET PRESSURE
50
95
150
200
275
Fluorocarbon (FKM) Disk Nitrile (NBR)
600 41.4
200 13.8
MAXIMUM EMERGENCY
OUTLET (CASING)
(2)
550 37.9
(2)
66 4.55
3.45
6.55
10.3
13.8
19.0
MAXIMUM OUTLET
PRESSURE
OVER SETPOINT
20 1.38
(2)
Limited by Maximum
Emergency Outlet Pressure
200 13.8
(3)
(1)
1.38
1.38
(2)
Disk
PRESSURE
(4)
Table 3. Type 630R Relief Pressure Ranges
RELIEF VALVE
CONSTRUCTION
Low-Pressure
High-Pressure
1. Leakage or bursting of pressure-containing parts may occur if inlet pressure exceeds these values.
RELIEF (INLET)
PRESSURE RANGE
psig bar psig bar
3 to 8
6 to 17
15 to 22
20 to 35
35 to 50
30 to 70
50 to 95
75 to 175
150 to 250
0.21 to 0.55
0.41 to 1.17
1.03 to 1.52
1.38 to 2.41
2.41 to 3.45
2.07 to 4.83
3.45 to 6.55
5.17 to 12.1
10.3 to 17.2
PART NUMBER
0W019227022
0W019127022
0W019027022
0Y066427022
1J146927142
0W019127022
0W019027022
0Y066427022
1J146927142
To avoid overpressure, provide an
appropriate overpressure protection
device to ensure that none of the limits
listed in Specications section, Tables 1
through 3 will be exceeded.
Regulator or relief valve operation below the limits
specied in Specications section, Tables 1 through 3
does not preclude the possibility of damage from external
sources or from debris in the gas line. Inspect the
regulator for damage after any overpressure condition.
MAXIMUM ALLOWABLE
RELIEF (INLET) PRESSURE,
psig / bar
Relief Pressure Setting Plus
Maximum Allowable Buildup of
25 psig / 1.72 bar
Relief Pressure Setting Plus
Maximum Allowable Buildup of
250 psig / 17.2 bar
MAXIMUM EMERGENCY
INLET (CASING) PRESSURE
75 5.17
550 37.9
(1)
Startup
Starting up the unit consists of opening the upstream
block valve, introducing gas pressure. Use gauges to
monitor pressures during startup.
The range of allowable pressure settings is marked
on the nameplate. If a pressure setting beyond the
nameplate range is required, substitute an appropriate
spring selected from Table 5. Be sure to change the
nameplate to indicate the new pressure range.
3
630 Series
46A2976-A
A2525-1
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
Figure 2. Type 630 Regulator Operational Schematic
WARNING
!
To avoid the consequences of overtightening the spring in spring-loaded
regulators or relief valves, consult
Table 4 and replace the adjusting screw
with one of the correct length when
replacing the spring.
Some pressure ratings are dependent upon the actual
outlet pressure settings being used. For example,
with a Type 630 regulator, outlet pressure must not
exceed the setting by more than 20 psig / 1.38 bar
for low pressure constructions or 200 psig / 13.8 bar
for high pressure constructions or damage to internal
regulator parts may occur. However, with some higher
pressure ranges, the setting plus 20 psig / 1.38 bar or
200 psig / 13.8 bar exceeds the maximum emergency
outlet (casing) pressure. Before increasing the setting,
refer to Tables 2 and 3 (as appropriate). Review the
pressure limits for the spring range being used and
be certain that the new pressure setting will not result
in an overpressure condition. Always use a pressure
gauge to monitor pressure when making adjustments.
46A2977
A2526-1
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
Figure 3. Type 630R Relief Valve Operational Schematic
Adjusting Spring-Loaded Regulators
and Relief Valves
Loosen the hex nut (key 2, Figures 4, 5 and 6) atop
the spring case. While monitoring the pressure,
rotate the adjusting screw (key 1, Figures 4, 5 and 6)
clockwise to increase set pressure or counterclockwise
to decrease it. When the unit is regulating or relieving
pressure at the desired value, tighten the hex nut.
Shutdown
Slowly close the upstream block valve.
Principle of Operation
This section describes the operation of the Type 630
regulator and the Type 630R relief valve with spring
loading. Set pressure is changed with the adjusting
screw on the regulator or relief valve. The Type 630R
relief valve uses a light spring for added stability.
Type 630 Regulators
Refer to Figure 2. In the regulator construction, outlet
pressure registers beneath the diaphragm. As long
as the outlet pressure is less than the set pressure,
spring force on the diaphragm causes the lever to hold
4
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