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Duo-ChekValves
Mod.No.
Material Description
-9
Inconel X-750Springs
-14
316S.S.Plate, Pins
-39
410S.S.Plate, Pins& Inconel X-750Springs
-201
316S.S.Plate, Pins, Inconel X-750Springs
-233
316S.S.Plate, Pins, Inconel X-750Springs and 316S.S.OverlaySeat
-169
410S.S.Plate, Pins, Inconel X-750Springs and 410S.S.OverlaySeat
-772
Monel Plate, Pins, Springs, Bearings andMonel OverlaySeat
Ordering Information
Body andPlates
Seal*
Ordering
Material
OperatingTemperature
Letter
°C °F
A EPDM
-54 to 149 -65 to 300
B3
EPDM (NSF-61)
-54 to 149 -65 to 300
M Buna-N
-57 to 121 -70 to 250
N Neoprene
-40 to 121 -40 to 250
P AsBody
-29 to 538 -20 to1000
S Silicone
-101 to 260 -150 to 500
U RefrigerationGrade -40 to 121 -40 to 250
V Viton-B
®
-29 to 204 -20 to 400
* This range of operating temperatures is for general guidance.The range varieswith application,body andplatematerial.
®
Viton is a registered name of DuPont.
EndConnections
Ordering
Connections
Letter
F
Serrated face
G Grayloc
®
Hub
P PlainFace
(non serrated)
R Ring Joint
W Weld-End
Special BodyConfigurations
CommonModifications
Note:
Numerous additional modificationsmay be specified. Please consult factory.
Standard trim (WettedParts)Materials
Typical
Body
Seal
Hinge
Spring
Stop
FigureNo.
&Plate
Pin
Pin
Retainer
BMF
Al.Bronze
Buna-N
316S.S.
316S.S.
316S.S.
316S.S.
CMF
316Stainless
Buna-N
316S.S.
316S.S.
316S.S.
316S.S.
CPF
316Stainless
316Stainless
316S.S.
Inconel 600
316S.S.
316S.S.
CVF
316Stainless
Viton-B
®
316S.S.
Inconel 600
316S.S.
316S.S.
EPF
410Stainless
410Stainless
410S.S.
Inconel 600
410S.S.
410S.S.
SMF
CarbonSteel
Buna-N
316S.S.
316S.S.
316S.S.
Steel
SPF
CarbonSteel
CarbonSteel
316S.S.
Inconel 600
316S.S.
Steel
SVF
CarbonSteel
Viton-B
®
316S.S.
Inconel 600
316S.S.
Steel
Ordering
Material
Specification
Letter
B AluminumBronze
ASTMB148,Alloy 952
AB Ni-AluminumBronze ASTMB148,Alloy 958
C 316StainlessSteel
ASTMA351, Gr.CF-8M
E 410StainlessSteel
ASTMA217, Gr.CA15 (12%Cr)
F
Alloy 20
ASTMA351, Gr.CN7M
G LowTemp.C.S.
ASTMA352, Gr. LCB
H Cast Ironwith
ASTMA126, class 40
Al.Br.Plates
ASTMB148, (952)
K Hastelloy
®
C
A494, Gr.CW12MW
L
C12AlloySteel
ASTMA217, Gr.C12 (9%Cr)
M Monel
ASTMA494, Gr.M30C
S CarbonSteel
ASTMA216, Gr.WCB
(Std.andCEnon-impact tested)
S1
CarbonSteel
ASTMA216, Gr.WCB
(CE impact tested)
Ordering Material
Specification
Letter
T
317S.S.
ASTMA351, Gr.CG-8M
U WC6AlloySteel
ASTMA217, Gr.WC6 (1
1
⁄
4
%Cr)
V 347S.S.
ASTMA351, Gr.CF-8C
Y C5AlloySteel
ASTMA217, Gr.C5 (5%Cr)
Z
WC9AlloySteel
ASTMA217, Gr.WC9 (2
1
⁄
2
%Cr)
CA Duplex
ASTMA351, Gr.CD4MCu
DZ 22%Duplex
UNSS31803,ASTMA890, Gr. 4A
EA 254SMOStainless UNSS31254, (ASTMCK3MCuN)
FN Inconel
®
625
ASTMA494, Gr.CW-6MC
GC LCC LowTemp.Steel
ASTMA352, Gr. LCC
TT Titanium
ASTMB367, Gr.C2/ASTMB348, Gr 2r
EB 25%Super Duplex
ASTMA890, Gr 6A/A351, Gr.CD3MWCuN
Mod.No. APITrimNo. Material Description
-169
1
Type 410
-491
5
Hard Faced
-131E
8
F6 andHardFaced
-772
9
Monel
-233
10
Type 316
-385E
12
316 and Hard Faced
Designation
Configuration
No.
None (Blank) Wafer Style, inserted between
mating flangeswith studs
spanning entire length
1
Lug designw/threaded holes
bolted from each end
2
Lug designwith through-bolt holes
to protect studs
3
Double flanged designwith valve
flanges bolted to individual
line flanges
