Data sheet
Non return Valve - Danfoss NVD 402
Description
Features:
•Operates in any position
•Minimum head loss
•Silent, reliable sealing, compact
•Exceptional robustness
•Notch provided for cable to submerged pumps until DN 100.
•Closing system: long back axial guiding for reduced displacement
•Sealing guaranteed by a flat seal
•Return spring
Main Data:
•DN 40 - 500
•kVS 47 - 6914 m3/h
•PN 16 (10)
•Medium: - Circulation water, drinking water or
chilled glycolic water up to 50 %
•Medium Temperature: - 10 … 100 °C
•Flanged connection
•Compliance with Pressure Equipment Directive 2014/68/EU
•Flange drilling according to EN1092-2
•Approvals:
Ordering
Note:
The indicated pressure for the different categories of fluids (L1/ L2/G1/G2) is under no condition a guarantee of use.
Therefore, it is essential to validate the use of products under given operating conditions.
|
DN |
Kv |
PN |
PFA |
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|
PS (bar) |
|
Code No. |
|
˝ |
(m3/h) |
(bar) |
L1 |
L2 |
|
G1 |
G2 |
|||
1 ½ |
40 |
47 |
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|
16 |
|
065B7470 |
2 |
50 |
99 |
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065B7471 |
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2 ½ |
65 |
159 |
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|
16 |
|
|
15 |
|
065B7472 |
3 |
80 |
222 |
10/16 |
16 |
16 |
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12 |
16 |
065B7473 |
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|
|
|||||||||
4 |
100 |
396 |
|
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|
10 |
|
065B7474 |
5 |
125 |
619 |
|
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0.5 |
|
065B7475 |
6 |
150 |
890 |
|
|
13 |
|
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0.5 |
|
065B7476 |
8 |
200 |
1120 |
10 |
|
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065B7477 |
10 |
250 |
2010 |
10 |
10 |
|
|
|
10 |
|
065B7478 |
12 |
300 |
2459 |
10 |
|
10 |
10 |
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|
10 |
065B7479 |
14 |
350 |
2843 |
10 |
|
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065B7480 |
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16 |
400 |
4370 |
10 |
10 |
|
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0.5 |
|
065B7481 |
20 |
500 |
6914 |
10 |
|
|
|
|
|
|
065B7482 |
Dimensions
˝ |
A |
B |
C |
D |
Weight |
|
|
DN |
(mm) |
(mm) |
(mm) |
(kg) |
|
||
1 ½ |
40 |
85 |
80 |
150 |
4.2 |
|
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2 |
50 |
100 |
97 |
165 |
5.8 |
|
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2 ½ |
65 |
120 |
125 |
185 |
8.1 |
|
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3 |
80 |
140 |
150 |
200 |
10.2 |
|
|
4 |
100 |
170 |
187 |
220 |
14.5 |
B |
|
5 |
125 |
200 |
220 |
250 |
24 |
|
|
6 |
150 |
230 |
250 |
285 |
32 |
|
|
8 |
200 |
289 |
340 |
340 |
53 |
|
|
10 |
250 |
354 |
420 |
405 |
94 |
|
|
12 |
300 |
396 |
490 |
460 |
140 |
A |
|
14 |
350 |
473 |
586 |
533 |
225 |
||
C |
|||||||
16 |
400 |
560 |
680 |
597 |
312 |
D |
|
20 |
500 |
750 |
880 |
670 |
540 |
|
© Danfoss | 2019.04 |
VD.BO.M2.02 | 1 |
Data sheet |
Danfoss NVD 402 |
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Design |
Pos. Description |
Material |
EURO |
ANSI |
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Casing DN 40-400 |
Cast iron / epoxy |
EN 1561 EN-GJL-250 |
ASTM A 48 35 B |
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1 |
ASTM A 536 |
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Casing DN 500 |
Ductile iron / epoxy |
EN 1563 EN-GJS-400-15 |
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65-45-12 |
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2 |
Ring seal DN 40-250 |
EPDM |
- |
- |
1 |
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3 |
Ring |
Bronze |
EN 1982 CuSn12-C GS |
- |
2 |
|
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Guide DN50 |
Bronze |
EN 1982 CuSn5Zn5Pb2-C GS |
ASTM A 48 35 B |
3 |
|
4 |
DN 40&60-400 |
Cast iron / epoxy |
EN 1561 EN-GJL-250 |
ASTM A 536 |
4 |
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DN 500 |
Ductile iron / epoxy |
EN 1563 EN-GJS-400-15 |
65-45-12 |
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5 |
||||
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5 |
Spring |
Stainless steel |
EN 10270-3 X10CrNi18-8 |
AISI 302 |
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6 |
Seal |
EPDM |
- |
- |
6 |
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7 |
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Closing system |
Brass |
EN 12164 CuZn40Pb2 R360 |
|
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7 |
- |
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|
DN 40, DN 50-65 |
Bronze |
EN 1982 CuSn5Zn5Pb2-C GS |
8 |
||
|
7-8 |
DN 80-400 Stem |
Bronze |
EN 1982 CuSn5Zn5Pb2-C GS |
- |
|
|
Check-Valve |
Ductile iron / epoxy |
EN 1561 EN-GJL-250 |
|
||
|
7-8 |
DN 500 Stem |
Bronze |
EN 1982 CuSn12-C GS |
ASTM A 48 35 B |
|
|
Check-Valve |
Ductile iron / epoxy |
EN 1563 EN-GJS-400-15 |
|
Headloss diagram |
DN |
|
Opening pressure in mm/CE |
|
KV |
|
|
|
mm |
|
|
|
without spring |
ζ |
|
˝ |
|
|
|
(m3/h) |
|||
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|
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|
|
|
|
|
1 ½ |
40 |
440 |
210 |
320 |
120 |
47 |
1.8 |
2 |
50 |
440 |
220 |
330 |
110 |
99 |
1 |
2 ½ |
65 |
450 |
190 |
320 |
130 |
159 |
1.1 |
3 |
80 |
450 |
190 |
320 |
130 |
222 |
1.3 |
4 |
100 |
500 |
240 |
370 |
130 |
396 |
1 |
5 |
125 |
510 |
210 |
360 |
150 |
619 |
1 |
6 |
150 |
550 |
210 |
380 |
170 |
890 |
1 |
8 |
200 |
590 |
210 |
400 |
190 |
1120 |
2 |
10 |
250 |
710 |
210 |
460 |
250 |
2010 |
1.5 |
12 |
300 |
820 |
90 |
460 |
365 |
2459 |
2.1 |
14 |
350 |
860 |
100 |
480 |
380 |
2843 |
2.9 |
16 |
400 |
800 |
50 |
410 |
390 |
4370 |
2.1 |
20 |
500 |
1030 |
0 |
430 |
580 |
6914 |
2.05 |
Direction for use:
•Solid line: Valve completely open
•Dotted line: opening stage of valve
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∆P |
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<![if ! IE]> <![endif]>M/WC |
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<![if ! IE]> <![endif]>M/CE |
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<![if ! IE]> <![endif]>PSI |
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DN
<![endif]>40
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<![if ! IE]> <![endif]>50 |
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<![if ! IE]> <![endif]>65 |
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<![if ! IE]> <![endif]>80 |
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<![if ! IE]> <![endif]>100 |
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<![if ! IE]> <![endif]>125 |
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<![if ! IE]> <![endif]>150 |
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<![if ! IE]> <![endif]>200 |
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<![if ! IE]> <![endif]>250 |
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<![if ! IE]> <![endif]>300 |
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<![if ! IE]> <![endif]>350 |
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<![if ! IE]> <![endif]>400 |
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<![if ! IE]> <![endif]>500 |
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Debit m3/h
Flow gallon/min
2 | VD.BO.M2.02 |
© Danfoss | DHS-SRMT/SI | 2019.04 |