Data Sheet

Bulletin 71.4:MR108
5
Table 3. Construction Materials
PART STANDARD OPTIONAL
Body WCC Steel
(1)
Cast Iron, CF8M, CF3M Stainless steel
Body Flange WCC Steel
(1)
CF8M, CF3M Stainless steel
Actuator Casing - Low Pressure AISI 1010 Steel
(1)
316/316L Stainless steel
Actuator Casing - High Pressure WCC Steel
(1)
CF3M/CF8M Stainless steel
Internal Stiffener Plate AISI 1010 Steel
(1)
316/316L Stainless steel
Spring Case WCC Steel CF3M/CF8M Stainless steel
Spring Case Spacer Zinc-plated Steel Stainless steel
Cage CF3M/CF8M (Quick Opening), CF8M (Linear) Stainless steel
Valve Plug and Seat Ring 416 Stainless steel
316, 316L, S20910 (Nitronic 50)
Stainless steel (NPS 1 / DN 25 only)
Closing Spring Inconel
®
X750
Stem S17400 H1075 Stainless steel S20910 (Nitronic 50) Stainless steel
Lower Diaphragm Support S17400 H1075 Stainless steel
Diaphragm and Seals Nitrile (NBR) Fluorocarbon (FKM), Ethylene Propylene (EPDM)
Upper Diaphragm Plate Cast Iron
Control/Set Spring Steel Alloy
(1)
Spring Seats Zinc-plated Steel
Bolting
SA194 Grade B7/NCF (Body to Bonnet)
SAE Grade 5/NCF (Actuator)
Stainless steel
Adjusting Screw Zinc-plated Steel Stainless steel
1. Powder coated.
Inconel
®
is a mark owned by Special Metals Corporation.
Table 2. Backpressure Control Ranges
ACTUATORTYPE
SPRINGRANGE
SPRINGPART
NUMBER
SPRING
COLOR
CODE
SPRINGWIRE
DIAMETER
SPRINGFREE
LENGTH
MAXIMUMPRESSURE
OVERSETPOINTTO
AVOIDINTERNALPARTS
DAMAGE
psig bar In. mm In. mm psig bar
Low Pressure
5 to 14 0.34 to 0.97 GE42909X012 White 0.44 11.2
9.70 246
20 1.4
8 to 24 0.55 to 1.7 GE42910X012 Silver 0.50 12.7
12 to 30 0.83 to 2.1 GE42911X012 Orange 0.56 14.2
15 to 35 1.0 to 2.4 GE43002X012 Red 0.63 16.0
High Pressure
25 to 40 1.7 to 2.8 GE42906X012 Blue 0.33 8.38
120 8.3
35 to 70 2.4 to 4.8 GE42907X012 Green 0.38 9.65
55 to 120 3.8 to 8.3 GE42909X012 White 0.44 11.2
90 to 200
(1)
6.2 to 13.8
(2)
GE42910X012 Silver 0.50 12.7
175 to 300
(1)
12.1 to 20.7
(2)
GE43002X012 Red 0.63 16.0
1. Maximum setpoint is limited to 150 psig / 10.3 bar for constructions with Fluorocarbon (FKM) diaphragm.
2. Not applicable for constructions with Fluorocarbon (FKM) diaphragm.
Table 4. Wide Open Flow and Sizing Coefcients
BODYSIZE
WIDEOPENCOEFFICIENTS IECSIZINGCOEFFICIENTS
LineSizeEqualsBodySize
C
1
K
m
F
L
X
T
F
d
NPS DN C
g
C
v
QuickOpeningCage
1 25 597 17.5 34.1 0.81 0.90 0.73 0.43
2 50 1740 48.2 36.1 0.81 0.90 0.82 0.34
3 80 3540 103.1 34.4 0.76 0.87 0.75 0.32
4 100 4300 135.9 31.6 0.72 0.85 0.65 0.3
ReducedPortQuickOpeningCage
2 50 1570 43.8 35.9 0.81 0.90 0.72 0.36