Data sheet
Non return Valve - Danfoss NVD 895
Description
Features:
•Operating position: horizontal and vertical
•Minimum occupation of space
•Very low head loss
•For pumping, water supply, general industry
•Closing system: double plate with return spring
•Using these check valves on networks equipped with piston pumps or compressors is not recommended.
Main Data:
•DN 50 - 400
•kVS 35.7 - 5867 m3/h
•PN 10/16
•Medium:
-Circulation water, drinking water or chilled glycolic water up to 50 %
•Medium Temperature:
-10 … 100 °C
•Mounting between flanges PN10/16
•Compliance with Pressure Equipment Directive 2014/68/EU
• 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) |
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Code No. |
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(m3/h) |
(bar) |
L1 |
L2 |
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G1 |
G2 |
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50 |
35.7 |
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16 |
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065B7495 |
65 |
64.7 |
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15 |
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065B7496 |
80 |
116.1 |
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16 |
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12 |
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065B7497 |
100 |
253.3 |
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10 |
16 |
065B7498 |
125 |
481.8 |
10/16 |
16 |
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16 |
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0.5 |
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065B7499 |
150 |
698.4 |
13 |
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0.5 |
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065B7500 |
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200 |
1345.5 |
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0.5 |
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065B7501 |
250 |
2249.5 |
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10 |
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0.5 |
14 |
065B7502 |
300 |
3098 |
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0.5 |
11 |
065B7503 |
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400 |
5867 |
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- |
8 |
065B7504 |
Dimensions
DN |
A |
B |
C |
D |
Weight |
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(mm) |
(mm) |
(mm) |
(mm) |
(kg) |
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50 |
50 |
54 |
60 |
109 |
1.2 |
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65 |
65 |
54 |
73 |
129 |
1.8 |
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80 |
80 |
57 |
89 |
144 |
2.9 |
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100 |
100 |
64 |
114 |
164 |
3.9 |
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125 |
125 |
70 |
141 |
194 |
5.8 |
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150 |
150 |
76 |
168 |
220 |
8 |
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200 |
200 |
95 |
219 |
275 |
14 |
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D |
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250 |
250 |
108 |
273 |
330 |
22 |
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300 |
300 |
143 |
324 |
380 |
34 |
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400 |
400 |
191 |
410 |
491 |
83 |
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© Danfoss | 2019.04 |
VD.BO.L2.02 | 1 |
Data sheet |
Danfoss NVD 895 |
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Design |
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Pos. |
Description |
Material |
EURO |
ANSI |
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1 |
Casing DN50-150 |
Cast iron + epoxy |
EN-GJL-250 |
ASTM A 48 35 B |
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DN200-400 |
Ductile iron + epoxy |
EN-GJS-400.15 |
ASTM A 536 60-40-18 |
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2 |
Plates |
Stainless steel |
GX5CrNi19-10 |
AISI 304 |
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3 |
Seal |
EPDM |
− |
− |
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4 |
Spring |
Stainless steel |
X5CrNiMo17-12-2 |
AISI 316 |
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5 |
Steam |
Stainless steel |
X5CrNiMo17-12-2 |
AISI 316 |
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6 |
Bearing |
PTFE |
− |
− |
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7 |
Eye bolt DN>150 |
Steel XC15 |
− |
− |
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8 |
Plugs |
Brass |
− |
− |
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Headloss diagram
DN |
Opening pressure |
Kv |
ζ |
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(mm) |
(m3/h) |
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50 |
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35.7 |
7.81 |
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65 |
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64.7 |
6.81 |
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80 |
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116.1 |
4.86 |
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100 |
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253.3 |
2.49 |
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125 |
Near 0 |
481.8 |
1.68 |
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150 |
698.4 |
1.66 |
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200 |
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1345.5 |
1.41 |
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250 |
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2249.5 |
1.23 |
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300 |
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3098 |
1.35 |
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400 |
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5867 |
1.2 |
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]>PSI |
<![if ! IE]> <![endif]>M/CE |
<![if ! IE]> <![endif]>M/WC |
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DN |
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<![if ! IE]> <![endif]>50 |
<![if ! IE]> <![endif]>65 |
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<![if ! IE]> <![endif]>80 |
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<![if ! IE]> <![endif]>100 |
<![if ! IE]> <![endif]>125 |
<![if ! IE]> <![endif]>150 |
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<![if ! IE]> <![endif]>200 |
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<![if ! IE]> <![endif]>250 |
<![if ! IE]> <![endif]>300 |
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<![if ! IE]> <![endif]>400 |
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15 |
10 |
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8 |
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10 |
7 |
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8 |
6 |
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7 |
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6 |
4 |
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5 |
3 |
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3 |
2 |
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2 |
1.5 |
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1 |
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.8 |
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1 |
.7 |
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.6 |
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.5 |
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.4 |
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.3 |
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.2 |
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.15 |
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DEBIT M3/H |
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2 |
3 |
4 |
5 |
6 |
8 |
<![if ! IE]> <![endif]>10 |
<![if ! IE]> <![endif]>15 |
<![if ! IE]> <![endif]>20 |
<![if ! IE]> <![endif]>25 30 |
<![if ! IE]> <![endif]>40 |
<![if ! IE]> <![endif]>50 60 |
<![if ! IE]> <![endif]>80 |
<![if ! IE]> <![endif]>100 |
<![if ! IE]> <![endif]>150 |
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<![if ! IE]> <![endif]>250 300 |
<![if ! IE]> <![endif]>400 |
<![if ! IE]> <![endif]>500 600 |
<![if ! IE]> <![endif]>800 |
<![if ! IE]> <![endif]>1000 |
<![if ! IE]> <![endif]>1500 |
<![if ! IE]> <![endif]>2000 |
<![if ! IE]> <![endif]>2500 3000 |
<![if ! IE]> <![endif]>4000 |
<![if ! IE]> <![endif]>5000 6000 |
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FLOW GALLON/MIN |
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8 |
<![if ! IE]> <![endif]>10 |
<![if ! IE]> <![endif]>15 |
<![if ! IE]> <![endif]>20 |
<![if ! IE]> <![endif]>25 |
<![if ! IE]> <![endif]>30 |
<![if ! IE]> <![endif]>40 |
<![if ! IE]> <![endif]>60 |
<![if ! IE]> <![endif]>80 |
<![if ! IE]> <![endif]>100 |
<![if ! IE]> <![endif]>150 |
<![if ! IE]> <![endif]>200 |
<![if ! IE]> <![endif]>250 |
<![if ! IE]> <![endif]>300 |
<![if ! IE]> <![endif]>400 |
<![if ! IE]> <![endif]>500 |
<![if ! IE]> <![endif]>600 |
<![if ! IE]> <![endif]>800 |
<![if ! IE]> <![endif]>1000 |
<![if ! IE]> <![endif]>1500 |
<![if ! IE]> <![endif]>2000 |
<![if ! IE]> <![endif]>2500 |
<![if ! IE]> <![endif]>3000 |
<![if ! IE]> <![endif]>4000 |
<![if ! IE]> <![endif]>5000 |
<![if ! IE]> <![endif]>6000 |
<![if ! IE]> <![endif]>8000 |
<![if ! IE]> <![endif]>10000 |
<![if ! IE]> <![endif]>15000 |
<![if ! IE]> <![endif]>20000 |
<![if ! IE]> <![endif]>25000 |
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2 | VD.BO.L2.02 |
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© Danfoss | DHS-SRMT/SI | 2019.04 |