Part name
材 料
H77X-
10C、25
16、40
H77H-
16C、40
25、64
H77Y-
25I
64I
40I
H77W-
16C、25
25C、40
10P、25P
16P、40P
Valve body, butterfly plate
cast steel WCB
Cr Mo steel
1Cr18Ni9Ti
Valve stem
2Cr13
Sealing ring of valve body
-
Surfacing alloy welding
Surfacing welding
Closing spring
Heat-resisting alloy
Model
Nominal pressure PN(MPa)
Test pressure PN(MPa)
working temperature （℃ ）
Applicable medium
Shell
Seal up
H77X
H77H
H77Y
H77W
1.0
1.5
1.1
Soft seal：
＜80
Hard seal：
＜450
Water, gas, oil, nitric acid, etc.
1.6
2.4
1.76
2.5
3.75
2.75
4.0
6.0
4.4
6.4
9.6
7.0
Nominal diameter DN(mm)
L
D 2
D 3
H77H H77Y H77W
50
43
100
46
400
140
485
376
390
80
64
135
71
450
152
545
427
155
91.5
94
500
608
479
490
125
70
185
115
118
600
178
718
579
588
150
76
210
141
145
700
229
800
675
686
200
89
265
191
241
905
774
784
Be sure to write clearly consulted or purchase products detailed parameters and quantity.
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