Related parameters of buried ball valve


GQ47 type PN1.6MPa~2.5MPa main connection size and weight

Nominal pass DN

15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
L
130
150
160
180
200
230
290
310
350
400
480
600
730
850
980
1100
1200
1250
1450
H1
220
230
240
260
307
360
410
483
512
543
581
617
672
723
758
791
828
870
940
H2
450
486
525
550
610
640
640
675
710
740
820
905
955
990
1050
1100
1270
1450
 
H3
415
455
500
535
580
605
640
675
710
740
820
905
955
990
1050
1100
1270
1450
 
H4
370
400
440
460
480
500
550
600
650
713
760
820
875
930
962
1020
1285
16

Main part material

Part Name
Material
valve body
WCB
ZG1Cr5Mo
18-8CrNi
18-12CrNiMo
cap
WCB
ZG1Cr5Mo
18-8CrNi
18-12CrNiMo
stem
2Cr13
38CrMoA1
1Cr18Ni9Ti
1Cr18NiMo2aTi
sphere
WCB+HCr
1Cr5Mo
18-8CrNi
18-12CrNiMo
valve seat
PTFE/13Cr/CrNi SS+STELLITE
stud
B7/35CrMoA
1Cr17Ni2
nut
2H/45
2Cr13
filler
PTFE/reinforced flexible graphite

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