Emerson MR105, Instruction Manual

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Type MR105
5
Figure 3. Type MR105 with High-Pressure Actuator Operational Schematic
M1181
TyPe y602-12 VeNT PoINTed doWN
oR 1/2 NPT PReSSURe-LoAded
SPRINg CASE VENT
VALVE PLUg
DIAPHRAgM
SEAT RINg
TyPe y602-12 VeNT
CONTROL SPRINg
ACTUATOR
ACTUATOR STEM
CAgE
VALVE SPRINg
1/2 NPT CoNTRoL
LINE CONNECTION
Table 3. Maximum Inlet, Outlet and Emergency Casing Pressure
(1)
BODY
MATERIAL
END
CONNECTION
MAxIMUM INLET
PRESSURE
MAxIMUM OUTLET PRESSURE MAxIMUM EMERgENCY CASINg PRESSURE
Low-Pressure
Actuator
High-Pressure
Actuator
(2)
Low-Pressure
Actuator
High-Pressure
Actuator
(2)
psig bar psig bar psig bar psig bar psig bar
Cast Iron
NPT 340 23.4
70 4.8
340 23.4
70 4.8
340 23.4
CL125 FF 175 12.1 175 12.1 175 12.1
CL250 RF 400 27.6 400 27.6 400 27.6
WCC steel
NPT 400 27.6
70 4.8
400 27.6
70 4.8
400 27.6
CL150 RF 245 16.9 245 16.9 245 16.9
CL300 RF
400 27.6 400 27.6 400 27.6
CL600 RF
PN 16 RF 245 16.9 245 16.9 245 16.9
PN 16/25/40 RF 400 27.6 400 27.6 400 27.6
CF8M
Stainless steel
NPT 400 27.6
70 4.8
400 27.6
70 4.8
400 27.6
CL150 RF 225 15.5 225 15.5 225 15.5
CL300 RF
400 27.6 400 27.6 400 27.6
CL600 RF
PN 16 RF 225 15.5 225 15.5 225 15.5
PN 16/25/40 RF 400 27.6 400 27.6 400 27.6
CF3M
Stainless steel
NPT 400 27.6
70 4.8
400 27.6
70 4.8
400 27.6
CL150 RF 185 12.7 185 12.7 185 12.7
CL300 RF
400 27.6 400 27.6 400 27.6
CL600 RF
PN 16 RF 185 12.7 185 12.7 185 12.7
PN 16/25/40 RF 400 27.6 400 27.6 400 27.6
1. Based on a maximum temperature of 250°F / 121°C.
2. Maximum outlet and emergency casing pressures for constructions with Fluorocarbon (FKM) diaphragm are limited to 230 psig / 15.8 bar or the body rating limit, whichever is lower.
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE