Specifications
This section lists the specifications for Type 63EG-98HM relief valves or backpressure regulators. Factory
specifications are stamped on the main valve and pilot nameplates. The main valve nameplate is located on the
main valve body. The pilot relief pressure range appears on the pilot nameplate.
Main Valve Body Sizes and End Connection Styles
(1)
See Table 1
Maximum Design Pressure
(2)(3)
600 psig / 41.4 bar or body rating limit, whichever
is lower
Maximum Operating Relief (Inlet) Pressure
Including Build-up
(2)(3)
450 psig / 31.0 bar or body rating limit, whichever
is lower
Maximum Outlet Pressure
(2)(3)
450 psig / 31.0 bar
Maximum Differential Pressure
(2)
400 psig / 27.6 bar
Relief Set Pressure/Backpressure Control Ranges
(4)
See Table 3
Port Diameter and Valve Plug Travels
See Table 2
Differential and Build-up Pressure Requirements
(2)
See Table 4
Temperature Capabilities
(2)(5)
Fluorocarbon (FKM):
0 to 300°F / -18 to 149°C
Not acceptable in water in excess of 180°F / 82°C
Ethylenepropylene (EPR):
Steel:
-20 to 350°F / -29 to 177°C
Stainless steel:
-40 to 350°F / -40 to 177°C
Perfluoroelastomer (FFKM):
0 to 450°F /
-18 to 232°C
Main Valve Flow Characteristics
Linear
(standard)
or Whisper Trim™ III Cage (optional)
Pilot Control Line Connection
1/4 NPT
Pilot Spring Case Connection
1/4 NPT
Approximate Weights (Including pilot)
NPS 2 / DN 50 body:
65 lbs / 29 kg
NPS 3 / DN 80 body:
105 lbs / 48 kg
NPS 4 / DN 100 body:
155 lbs / 70 kg
NPS 6 / DN 150 body:
340 lbs / 154 kg
NPS 8 x 6 / DN 200 x 150 body:
630 lbs / 286 kg
1. Other ratings and end connections can usually be supplied; consult the local Sales Office.
2. The pressure/temperature limits in this Instruction Manual and any applicable standard limitation should not be exceeded.
3. Fluorocarbon (FKM) diaphragm is limited to 300 psig / 20.7 bar.
4. Set pressure is defined as the pressure at which the pilot starts-to-discharge.
5. Special low temperature constructions for process temperatures between -76 to 104°F / -60 to 40°C are available by request. The low temperature construction passed Emerson
laboratory testing for lockup and external leakage down to -76°F / -60°C.
Table 1.
Body Sizes and End Connection Styles
Table 2.
Port Diameters and Valve Plug Travels
Table 3.
Relief Set Pressure or Backpressure Control Ranges
MAIN VALVE BODY SIZE
END CONNECTION STYLE
NPS
DN
2
50
NPT, ASME CL150 RF, CL300 RF,
CL600 RF or PN 16/25/40 flanged
3, 4, 6
80, 100, 150
ASME CL150 RF, CL300 RF,
CL600 RF or PN 16/25/40 flanged
8 x 6
200 x 150
ASME CL150 RF, CL300 RF
and CL600 RF flanged
BODY SIZE
PORT DIAMETER
VALVE PLUG TRAVEL
NPS
DN
In.
mm
In.
mm
2
50
2-3/8
60
1-1/8
29
3
80
3-3/8
86
1-1/2
38
4
100
4-3/8
111
2
51
6
150
7-3/16
183
2
51
8 x 6
200 x 150
7-3/16
183
2
51
CONTROL PRESSURE RANGE
(1)
PART NUMBER
COLOR
SPRING FREE LENGTH
SPRING WIRE DIAMETER
psig
bar
In.
mm
In.
mm
15 to 35
1.0 to 2.4
ERCA04288A0
Yellow
2.50
63.5
0.207
5.26
25 to 75
1.7 to 5.2
ERAA01910A0
Green
2.595
65.9
0.234
5.94
70 to 140
4.8 to 9.7
ERAA01911A0
Red
2.44
62.0
0.283
7.19
130 to 200
9.0 to 13.8
ERAA02889A0
Blue
2.250
57.2
0.331
8.41
100 to 375
6.9 to 25.9
ERCA04293A0
Unpainted
2.60
66.0
0.375
9.53
150 to 375
(2)
10.3 to 25.9
(2)
1N943427142
Unpainted
5.063
129
0.394
10.0
1. All springs may be backed off to 0 psig / 0 bar. However, highest capacities and best performances are obtained by using these springs in their recommended ranges.
2. 150 to 375 psig / 10.3 to 25.9 bar spring range is only for the Type MR98HH pilot construction; consult the local Sales Office for this option..
2
Type 63EG-98HM
