Flowserve NAF-Check Non Return Check Valves User Manual
Page 2
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Type
PN
DN
D
L
A
Weight
mm (inch)
[kg]
40
(1½)
84
33
15
1.2
50
(2)
92
43
5
1.7
65
(2½)
108
46
12
1.7
80
(3¼)
128
64
16
3
526 620 / 30
10-40
100
(4)
158
64
26
5
528 620 / 30
125
(5)
180
70
36
7
150
(6)
203
76
51
9
200
(8)
263
89
71
16
250
(10)
315
114
90
28
300
(12)
370
114
125
41
350
(14)
432
127
146
48
400
(16)
480
140
175
65
450
(18)
530
152
188
94
526 520 / 30
10-25
500
(20)
592
152
228
115
528 520 / 30
600
(24)
692
178
282
192
700
(28)
804
229
301
270
800
(32)
911
241
374
402
1000
(40)
1124
300
458
782
65
(2½)
125
46
12
3
80
(3¼)
138
64
16
4
100
(4)
158
64
26
5
125
(5)
188
70
39
9
150
(6)
222
76
52
11
526 822 / 32
40-100
200
(8)
275
89
73
23
250
(10)
335
114
93
45
300
(12)
394
114
131
57
350
(14)
435
127
151
75
400 ³)
(16)
490
140
177
98
NAF-Check
with spring
³) DN 400 mm (16") only for PN 40/63
Dimensions, Weights
L
A
∅
D
The spring
can be easily
fitted or
removed
after delivery.
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