Emerson Fisher MR98 Series - Page 2

MR98 Series
2
Pressure Registration
Internal or External
Shuto󰀨 Classication Per ANSI/FCI 70-3-2004
Metal Seats: Class IV
PTFE: Class IV
Elastomer Seats: Class VI or better
Specications (continued)
Temperature Capabilities of Body Materials
(1)(2)(4)
BODY MATERIAL TEMPERATURE RANGE
Gray Cast Iron -29 to 208°C / -20 to 406°F
WCC Steel
(4)
-29 to 232°C / -20 to 450°F
LCC Steel
(4)
-40 to 232°C / -40 to 450°F
Stainless Steel
(4)
, Monel
®
or Hastelloy
®
C
-40 to 232°C / -40 to 450°F
Temperature Capabilities of Trim Materials
(1)(2)
TRIM MATERIAL
PART TEMPERATURE RANGE
Seat
Diaphragm
O-ring
Diaphragm
Protector
°C °F
Nitrile (NBR)
ü ü
-40 to 82 -40 to 180
Neoprene (CR)
ü
-40 to 82 -40 to 180
Fluorocarbon (FKM)
(3)
ü ü ü
-18 to 149
(5)
0 to 300
(5)
Ethylenepropylene (EPDM)
ü ü ü
-7 to 135 20 to 275
Sanitary Ethylenepropylene
(EPDM)
(1)
ü ü ü
-7 to 135 20 to 275
Peruoroelastomer (FFKM)
ü ü
-18 to 218 0 to 425
Polytetrauoroethylene
(PTFE)
ü
-40 to 204 -40 to 400
Metal
ü ü
-40 to 450 -40 to 232
1. Sanitary EPDM elastomers meet FDA, USP Class VI and ADI Free requirements.
Flow Coe󰀩cients
BODY SIZE
C
V
C
g
C
1
DN In.
- - - - 1/4 NPT 1.4 48 34.3
15 1/2 3.4 120 35.3
20 and 25 3/4 and 1 6.5 250 38.5
40 and 50 1-1/2 and 2 20.0 780 39.0
IEC Sizing Coe󰀩cients
BODY SIZE
X
T
F
d
F
L
K
m
DN In.
- - - - 1/4 NPT 0.743 0.74 0.95 0.90
15 1/2 0.787 0.78 0.94 0.88
20 and 25 3/4 and 1 0.935 0.70 0.91 0.83
40 and 50 1-1/2 and 2 0.961 0.69 0.94 0.88
Table 1. MR98 Series Body Sizes and Pressure Ranges
TYPE
BODY SIZE CONTROL PRESSURE RANGE
(1)
DN In. bar psig
MR98L and MR98LD 15, 20 and 25 1/4 NPT, 1/2, 3/4 and 1
0.14 to 0.48 2 to 7
0.41 to 0.97 6 to 14
0.83 to 1.7 12 to 25
1.4 to 2.6 20 to 38
MR98H, MR98HD and
MRR98HDP
15, 20 and 25 1/4 NPT, 1/2, 3/4 and 1
1.0 to 2.4 15 to 35
1.7 to 5.2 25 to 75
4.8 to 9.7 70 to 140
9.0 to 13.8 130 to 200
40 and 50 1-1/2 and 2
0.34 to 2.4 5 to 35
1.4 to 4.5 20 to 65
3.4 to 6.9 50 to 100
5.2 to 11.7 75 to 170
MR98HH and MR98HHD 15, 20 and 25 1/4 NPT, 1/2, 3/4 and 1 10.3 to 25.9 150 to 375
1. All springs may be backed o󰀨 to 0 bar / 0 psig. However, highest capacities and best performances are obtained by using these springs in their recommended ranges.
Monel
®
is a mark owned by Special Metals Corporation.
Hastelloy
®
C is a mark owned by Haynes International, Inc.
1. The pressure/temperature limits in this Installation Guide and any applicable standard or code limitation should not be exceeded.
2. Pressure and/or the body end connection may decrease these maximum temperatures.
3. Not for use on steam service.
4. Meets API 614 Requirements (with Stainless steel trim).
5. Limited to 93°C / 200°F for hot water.