REDUCED BORE TYPE

General design standard API6D/API608
P-T Rating ASME B16.34
Face to face dimensions ASME B16.10
Flanged end dimensions ASME B16.5
Butt-welded end ASME B16.25
Inspection and test API6D/ISO5208
Valve marking MSS-SP25

CLASS 150 Dimensions

DN 2″ 2 1/2″ 3″ 4″ 5″ 6″ 8″ 10″
d 51 64 76 102 127 152 203 254
d1 38 51 64 76 102 127 152 203
L 178 190 203 229 254 267 292 330
H 115 120 155 165 200 220 295 355
D 230 230 400 400 650 1050 1050 1410
Wt(Kg) 10.5 16 18.9 31.5 37.5 54.9 73 121.5

CLASS 300 Dimensions

DN 2″ 2 1/2″ 3″ 4″ 5″ 6″ 8″ 10″
d 51 64 76 102 127 152 203 254
d1 38 51 64 76 102 127 152 203
L 216 241 283 305 381 403 419 457
H 115 120 155 165 200 260 295 355
D 230 230 400 400 650 1050 1050 1410
Wt(Kg) 16 25 34.2 38.2 51.8 67.1 94.5 144
CV
Specification Reduce Bore Full Bore
Inch Metric
1/2″ 15 25
3/4″ 20 50
1″ 25 100
1 1/2″ 40 270
2″ 50 165 490
2 1/2″ 65 270 950
3″ 80 350 1160
4″ 100 550 2200
5″ 125 670 3800
6″ 150 765 5100
8″ 200 1890 9300
10″ 250 3900

Cv value

Left chart is the flow ratio of floating ball. Cv indicates the gallons of water at temperature +60°F flowing through the valve bore in pressure differential down1Lbs/Inch2 (0.0068694757Mpa).

 

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