Danfoss NVD 812 Data sheet
Data sheet
Non return Valve - Danfoss NVD 812
Description
Features:
•Operates in any position
•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 15 to 100).
•Closing system with back axial guiding and return spring (ND 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 15 - 200
•kVS 4,24 - 546 m3/h
•PN 25/40
•Medium:
-Circulation water, drinking water or chilled glycolic water up to 50%
•Medium Temperature:
-10 … 350°C
•Leakage rate according to EN12266-1 rate E
•International construction Standards:
-CE Conformity Directive 2014/68/EU
-Connection acc. to ASA B16.1 class 125RF
-Connection according to ASA B16.5 class 150RF and 300RF
-Connection according to EN 1092.2
-Overall dimensions according to EN558-1 series 49
• 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 |
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½ |
15 |
4,24 |
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|
|
065B7530 |
¾ |
20 |
7,80 |
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|
40 |
|
065B7531 |
1 |
25 |
12,40 |
|
|
40 |
|
|
|
|
065B7532 |
1¼ |
32 |
18,00 |
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30 |
|
065B7533 |
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1½ |
40 |
28,00 |
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25 |
40 |
065B7534 |
2 |
50 |
40,10 |
40 |
40 |
|
40 |
|
20 |
|
065B7535 |
2½ |
65 |
72,50 |
30 |
|
15 |
|
065B7536 |
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3 |
80 |
111,00 |
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|
25 |
|
|
12 |
|
065B7537 |
4 |
100 |
182,00 |
|
|
20 |
|
|
10 |
|
065B7538 |
5 |
125 |
302,00 |
|
|
16 |
|
|
0,5 |
28 |
065B7539 |
6 |
150 |
370,00 |
|
|
13 |
|
|
0,5 |
23 |
065B7540 |
8 |
200 |
546,00 |
|
|
40 |
|
|
17 |
25 |
065B7541 |
Dimensions |
A |
B |
C-PN6 |
C - PN10/16/ |
C - PN25/40/ |
Weight |
C |
|
|
ASA 150 |
ASA 300 |
|
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˝ |
DN |
(mm) |
(mm) |
(kg) |
|
|||
(mm) |
(mm) |
|
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B |
||||
½ |
15 |
16 |
44 |
53 |
53 |
0,10 |
||
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¾ |
20 |
19 |
54 |
63 |
63 |
0,14 |
|
|
1 |
25 |
22 |
64 |
73 |
73 |
0,23 |
C |
|
1¼ |
32 |
28 |
78 |
84 |
84 |
0,35 |
||
|
||||||||
1½ |
40 |
31,5 |
88 |
94 |
94 |
0,52 |
B |
|
2 |
50 |
40 |
98 |
109 |
109 |
0,73 |
||
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2½ |
65 |
46 |
118 |
129 |
129 |
1,52 |
|
|
3 |
80 |
50 |
134 |
144 |
144 |
2,17 |
C |
|
4 |
100 |
60 |
154 |
162 |
170 |
3,35 |
|
|
5 |
125 |
90 |
- |
192 |
192 |
8,55 |
B |
|
6 |
150 |
106 |
- |
218 |
224 |
12,70 |
|
|
8 |
200 |
140 |
- |
- |
284 |
30,00 |
|
DEN-SMT/SI |
VD.BO.P2.02 © Danfoss 05/2019 |
1 |
Data sheet |
Danfoss NVD 812 |
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Design |
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5 |
3 |
4 |
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Pos. Description |
Material |
EURO |
ANSI |
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Casing DN15 |
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X5CrNi18-10 |
AISI 304 |
1 |
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DN20 to 65 |
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GX5CrNi19-10 |
AISI 304 |
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1 |
Stainless steel |
6 |
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2 |
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DN80 to 100 |
GX2CrNiMo19-11-2 |
AISI 316L |
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DN125 to 200 |
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GX5CrNi19-10 |
AISI 304 |
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2 |
Closing system DN15 to 100 |
Stainless steel |
X2CrNiMo17-12-2 |
AISI 316L |
7 |
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4 |
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DN125 to 200 |
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GX5CrNi19-10 |
AISI 304 |
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3 |
Spring |
Stainless steel |
X10CrNi18-8 |
AISI 302 |
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Stop / Guide DN15 |
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X5CrNiMo17-12-2 |
AISI 316L |
1 |
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3 |
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DN20 to 100 |
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X2CrNi18-9 |
AISI 304L |
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4 |
Stainless steel |
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2 |
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DN125 to 150 |
GX2CrNiMo19-11-2 |
AISI 316L |
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DN200 |
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GX5CrNi19-10 |
AISI 304 |
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5 |
Centering collar DN15 |
Stainless steel |
X2CrNi18-9 |
AISI 304L |
7 |
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4 |
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Other DN |
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6 |
Clips |
Stainless steel |
X10CrNi18-8 |
AISI 302 |
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7 |
Discharge anti-static braid Copper |
− |
− |
1 |
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3 |
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2 |
Headloss diagram |
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DN |
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Opening pressure |
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(mm)/WC |
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KV |
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ζ |
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˝ |
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(mm) |
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Without |
(m3/h) |
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spring |
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½ |
|
15 |
160 |
120 |
140 |
|
20 |
4,24 |
4,4 |
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¾ |
|
20 |
165 |
125 |
145 |
|
20 |
7,80 |
4,1 |
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1 |
|
25 |
165 |
115 |
140 |
|
25 |
12,40 |
4,0 |
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1¼ |
|
32 |
190 |
130 |
160 |
|
30 |
18,00 |
5,0 |
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1½ |
|
40 |
200 |
120 |
160 |
|
40 |
28,00 |
5,1 |
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2 |
|
50 |
210 |
110 |
155 |
|
50 |
40,10 |
6,1 |
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2½ |
|
65 |
210 |
100 |
155 |
|
55 |
72,50 |
5,3 |
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3 |
|
80 |
226 |
95 |
160 |
|
65 |
111,00 |
5,2 |
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4 |
|
100 |
235 |
75 |
205 |
|
80 |
182,00 |
4,7 |
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5 |
|
125 |
335 |
75 |
205 |
|
130 |
302,00 |
4,2 |
||||
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6 |
|
150 |
360 |
70 |
215 |
|
145 |
370,00 |
5,8 |
||||
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8 |
|
200 |
515 |
105 |
310 |
|
205 |
546,00 |
8,4 |
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Direction for use :
•Solid line : Valve completely open
•Dotted line : opening stage of valve
<![endif]>Pression (bar)
40
35
30
25
20
15
10
5
0
<![if ! IE]><![endif]>-10 0
WORKING AREA
| <![if ! IE]> <![endif]>50 |
<![if ! IE]> <![endif]>100 |
<![if ! IE]> <![endif]>150 |
<![if ! IE]> <![endif]>200 |
<![if ! IE]> <![endif]>250 |
<![if ! IE]> <![endif]>300 |
<![if ! IE]> <![endif]>350 360 |
Température (°C)
2 |
VD.BO.P2.02 |
Produced by Danfoss A/S © 05/2019 |
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