Pipeline ancillaries Disc, split disc and wafer check valves
10
Materials No. Part
Type
Material
Valve bodies that are marked with a:
SDCV3 and SDCV7
Carbon steel
ASTM A352 LCC
1
' V ' - have a Fluoroelastomer seating face
Body
SDCV4 and SDCV8
Austenitic stainless steel
ASTM A351 CF8M
2 3 4 5 6 7
Retainer
Austenitic stainless steel
ASTM A351 CF8M
Pin
Austenitic stainless steel
AISI 316
Spring
Nickel alloy
INCONEL X750
Retainer clip
Austenitic stainless steel
AISI 316
Spacer washer
Austenitic stainless steel
AISI316
Plate
Austenitic stainless steel
ASTM A351 CF8M
1
2
7
4 3
5
6
2
7.5.41
Dimensions/weights approximate in mm and kg
B
ØA
B Ø C Ø D
Weights
SDCV3 and SDCV4
SDCV7 and SDCV8
SDCV3 and SDCV4
SDCV7 and SDCV8
10.5 58
Size
ASME 150
ASME 300
PN16 PN40
ASME 150
ASME 300
PN16 PN40
DN50 DN80 DN100 DN150 DN200 DN250 DN300
105 111 109 109 60 42 60 2.50 2.75 2.50 2.75
Ø A
137 149 144 144 73 67.5 89.5 5.50 6.00 5.50 6.00
Ø D
Ø C
175 181 164 170 73 90 115 6.80 7.50 6.80 7.50
222 251 220 226 98 132 169 15.00 17.50 15.00 17.50
279 308 275 293 127 176 220 29.50 32.00 29.50 32.00
339 362 331 355 146 238 275 47.00 52.00 47.00 52.00
409 422 386 420 181 266 326 85.00 87.00 85.00 87.00
TI-P601-43 CMGT Issue 4
Page 2 of 6
SDCV3, SDCV4, SDCV7 and SDCV8 Split Disc Check Valves
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