A.Products usage
H71 type wafer check valve is used with pipline to prevent medium back-going.
B.Feature:
1)Short structrual.
2)Little volume,light weight.
3)Quick opration,low water hammer pressure.
4)Easily instaled for vertical or horizontal pipline.
5)Flexible action and good sealing perfomance.
6)Long service life and good reliability.
C, Specifications:
Dimension: ,1/2” to 3”
Pressure rating: Class 150LB,300LB,600LB,900LB
Body material: Stainless steel
D, Material for Main Parts:
|
Model No
|
Body
|
Disc
|
Bearing
|
Spring
|
|
H71W-16C
|
WCB
|
CF8
|
2Cr13
|
0Cr18Ni9
|
|
H71W-16P
|
CF8
|
CF8
|
0Cr18Ni9
|
0Cr18Ni9
|
|
H71W-16R
|
CF8M
|
CF8M(316)
|
1Cr17Ni12Mo2
|
0Cr17Ni12Mo2
|
E, APPlicable Medium
H71W-16C Medium: water,oil,steam Temprature: -29~425C
H71W-16P Medium: NITRIC ACID Temprature: -196~540C
H71W-16R Medium: ACENTIC ACID Temprature: -196~540C
F, Standard
Design and Manufacture:API6594,API6D,GB
Face to face:API594,API6D,GB
Inspection and test:API598
G, Specifications:
|
Pressure
|
Size
|
Diameter
|
Weight
|
|
Pressure
|
Size
|
Diameter
|
Weight
|
||||
|
NPS
|
DN
|
L
|
D
|
NPS
|
DN
|
L
|
D
|
|||||
|
Class150
|
1/2
|
15
|
25
|
46
|
0.28
|
Class600
|
1/2
|
15
|
25
|
52
|
0.4
|
|
|
3/4
|
20
|
31.5
|
56
|
0.42
|
3/4
|
20
|
31.5
|
65
|
0.8
|
|||
|
1
|
25
|
35.5
|
65
|
0.56
|
1
|
25
|
35.5
|
72
|
1
|
|||
|
1 1/4
|
32
|
40
|
74
|
0.75
|
1 1/4
|
32
|
40
|
81
|
1.3
|
|||
|
1 1/2
|
40
|
45
|
84
|
1.3
|
1 1/2
|
40
|
45
|
94
|
1.8
|
|||
|
2
|
50
|
56
|
103
|
2.1
|
2
|
50
|
56
|
110
|
2.8
|
|||
|
2 1/2
|
65
|
63
|
122
|
2.8
|
2 1/2
|
65
|
63
|
128
|
4
|
|||
|
3
|
80
|
71
|
135
|
3.6
|
3
|
80
|
71
|
147
|
6
|
|||
|
4
|
100
|
80
|
173
|
4.8
|
4
|
100
|
80
|
191
|
11
|
|||
|
5
|
125
|
110
|
195
|
12
|
5
|
125
|
110
|
239
|
25
|
|||
|
6
|
150
|
125
|
220
|
17
|
6
|
150
|
125
|
264
|
32
|
|||
|
8
|
200
|
160
|
277
|
29
|
8
|
200
|
160
|
318
|
52
|
|||
|
Class300
|
1/2
|
15
|
25
|
52
|
0.3
|
Class900
|
1/2
|
15
|
25
|
62
|
0.6
|
|
|
3/4
|
20
|
31.5
|
65
|
0.46
|
3/4
|
20
|
31.5
|
69
|
0.9
|
|||
|
1
|
25
|
35.5
|
72
|
0.6
|
1
|
25
|
35.5
|
77
|
1.2
|
|||
|
1 1/4
|
32
|
40
|
81
|
0.8
|
1 1/4
|
32
|
40
|
87
|
1.5
|
|||
|
1 1/2
|
40
|
45
|
94
|
1.5
|
1 1/2
|
40
|
45
|
97
|
2
|
|||
|
2
|
50
|
56
|
110
|
2.4
|
2
|
50
|
56
|
140
|
5.5
|
|||
|
2 1/2
|
65
|
63
|
128
|
3
|
2 1/2
|
65
|
63
|
162
|
7.5
|
|||
|
3
|
80
|
71
|
147
|
4
|
3
|
80
|
71
|
165
|
8
|
|||
|
4
|
100
|
80
|
179
|
5.5
|
4
|
100
|
80
|
204
|
14
|
|||
|
5
|
125
|
110
|
214
|
13
|
5
|
125
|
110
|
245
|
27
|
|||
|
6
|
150
|
125
|
249
|
22
|
6
|
150
|
125
|
286
|
41
|
|||
|
8
|
200
|
160
|
305
|
36
|
8
|
200
|
160
|
356
|
76
|
|||