Data sheet
Non return Valve - Danfoss NVD 802
Description
Features:
•Operating position : horizontal and vertical
•Easy to install and dismantle, space-saving
•Minimum head loss
•Does not generate hammering
•Closing system : disc with parabolic edges with return spring ; lateral guiding by 3 or 4 ribs (DN 32 to 100).
•Closing system with back axial guiding and return spring (DN 125 to 200).
•Metal/metal seal (machined trim)
•Using these check valves on networks equipped with piston pumps or compressors is not recommended.
Main Data:
•DN 32 - 200
•kVS 18 - 546 m3/h
•PN 6/16
•Medium:
-Circulation water, drinking water or chilled glycolic water up to 50%
•Medium Temperature:
-10 … 200°C (DN65 to 200mm : 100°C)
•Mounting between langes PN6/16
•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 |
|
|
PS (bar) |
|
Code No. |
|
˝ |
(m3/h) |
(bar) |
L1 |
L2 |
|
G1 |
G2 |
|||
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|
|
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1 ¼ |
32 |
18 |
|
|
|
|
|
|
|
065B7520 |
1 ½ |
40 |
28 |
|
|
|
|
|
16 |
|
065B7521 |
2 |
50 |
40,1 |
6/16 |
|
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|
065B7522 |
2 ½ |
65 |
72,5 |
|
16 |
|
|
15 |
|
065B7523 |
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|
|
|
|
|
||||||
3 |
80 |
111 |
|
16 |
|
16 |
|
12 |
16 |
065B7524 |
4 |
100 |
182 |
|
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|
10 |
|
065B7525 |
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|
5 |
125 |
302 |
|
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065B7526 |
|
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|
6 |
150 |
370 |
16 |
|
13 |
|
|
0,5 |
|
065B7527 |
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|
8 |
200 |
546 |
|
|
10 |
|
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065B7528 |
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Dimensions |
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˝ |
A |
B |
C |
D |
Weight |
|
|
|
DN |
(mm) |
(mm) |
(mm) |
(kg) |
DN 1”¼ to 4” |
|
|
|
1 ¼ |
32 |
28 |
78 |
84 |
0,35 |
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|
1 ½ |
40 |
31,5 |
88 |
94 |
0,52 |
|
|
|
2 |
50 |
40 |
98 |
109 |
0,73 |
|
|
|
2 ½ |
65 |
46 |
118 |
129 |
1,52 |
|
|
|
3 |
80 |
50 |
134 |
144 |
2,17 |
|
|
|
4 |
100 |
60 |
154 |
162 |
3,35 |
DN 5”to 8” |
|
|
5 |
125 |
90 |
- |
194 |
8,55 |
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6 |
150 |
106 |
- |
218 |
12,70 |
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|
8 |
200 |
140 |
262 |
273 |
23,40 |
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DEN-SMT/SI |
VD.BO.O2.02 © Danfoss 05/2019 |
1 |
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