公称压力PN/MPaNominalpressure
试验压力/MPa Seal test
壳体强度试验Shell strength
上密封试验Back seal test
密封试验Seat test
1.0
1.5
1.1
1.6
2.4
1.8
2.5
3.8
2.8
4.0
6.O
4.4
6.4
8.6
7.O
7.0
1O.O
15.O
11.O
产品类型Product type
适用介质Applicable medium
适用温度/℃Applicable temperature
NKZ41HNKZ44HNKZ944H-C型NKZ941H
水、蒸汽、空气Water,Steam,Air
≤425
NKZ41H(Y)NKZ44H(Y)-I型NKZ944H(Y)-I型NKZ941H(Y)
≤550
零件名称Part name
阀体、阀盖Body Bonnet
阀杆Stem
闸板Wedge gate
密封面Sealing face
阀杆螺母Yokenut
填料Parking
紧固件Fastener
NKZ44HNKZ41H-C型NKZ944H-C型NKZ941H
WCB
2Crl3
25
H:合金钢H:alloy steel
铝青铜Albronze
膨胀复合石墨ExpandingcomDoundgraphite
优质碳钢High-gradecarbon steel
NKZ44NKZ41Y-I型NKZ944-I型NKZ941
铬钼钢Cr.Mo steel
20CrlMo1VA38CrMoAlA
Y:硬质合金Y:carbide alloy
公称通径DN/mmNominaldiameter
主要外形尺寸和连接尺寸/mmMain extemal and connecting dimensions
阀门重量/kgValveweight
附法兰尺寸/mmAdditional flange'sdimensions
L
H
D
D1
D2
b
f
z-d
W
h
D0
Dn
50
1.O
250
345
160
125
1OO
16
3
4-18
28
45
49
58
65
270
395
180
145
120
18
40
48
64
75
80
280
425
195
135
20
300
55
78
97
100
51O
215
155
8-18
72
52
96
110
325
570
245
21O
185
22
350
106
60
136
150
725
240
24
146
163
200
400
820
335
295
265
26
220
62
202
223
450
890
390
320
12-23
315
225
278
500
1070
440
368
398
303
330
550
1320
460
428
30
4
16-23
530
351
382
600
1450
565
515
482
32
16-25
690
432
650
1560
615
532
20-25
870
70
485
700
1720
670
620
585
34
1080
535
800
1880
780
685
36
5
20-30
1350
90
636
900
2085
895
840
24-30
750
1950
726
1OOO
2590
101O
950
905
44
24-34
2500
790
826
91
8-23
201
405
355
12-25
326
68
253
41O
375
520
470
435
572
580
525
16-30
740
640
545
955
95
705
608
20-34
1195
98
770
718
20-41
1455
105
g1O
788
24-41
850
211O
11O
1020
898
2630
115
主要外形尺寸和连接尺寸/mmMainexternalandconnectingdimensions
附法兰尺寸/mmAdditional flange's dimensions
Z-d
DO
43
66
82
510
230
190
79
117
188
8-25
114
144
218
157
151
172
360
310
243
370
332
12-30
85
483
430
455
92
4g0
448
16-34
610
505
7g4
660
555
1018
730
61O
1250
498
56
1528
130
598
875
815
24-48
2265
140
688
1000
990
930
2847
公称通径DN/mmNominaldi8m8ter
主要外形尺寸和连接尺寸/mmMain external and connecting dimensions
D6
f2
4.O
88
35
121
4.5
87
176
124
204
282
38
260
275
19g
445
385
42
313
12-34
392
102
251
408
46
364
116
301
465
422
684
34g
655
474
16-41
902
142
396