Data sheet
Non return Valve - Danfoss NVD 805
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
•Sealing: metal on elastomere seat
•Using these check valves on networks equipped with piston pumps or compressors is not recommended.
Main Data:
•DN 50 - 600
•kVS 39.4 - 11269 m3/h
•PN 10/16
•Medium:
-Circulation water, drinking water or chilled glycolic water up to 50 %
•Medium Temperature:
-10 … 100 °C (EPDM seal), 80 °C (NBR seal)
•Mounting between flanges PN10/16
•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 |
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PS (bar) |
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Code No. |
|
(m3/h) |
(bar) |
L1 |
L2 |
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G1 |
G2 |
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2 |
50 |
39.4 |
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16 |
|
065B7505 |
2 ½ |
65 |
83 |
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15 |
|
065B7506 |
3 |
80 |
138 |
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16 |
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12 |
|
065B7507 |
4 |
100 |
250 |
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10 |
16 |
065B7508 |
5 |
125 |
505 |
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065B7509 |
6 |
150 |
891 |
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13 |
|
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065B7510 |
8 |
200 |
1510 |
10/16 |
16 |
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16 |
|
0.5 |
|
065B7511 |
10 |
250 |
2746 |
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14 |
065B7512 |
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12 |
300 |
3936 |
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11 |
065B7513 |
14 |
350 |
4254 |
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10 |
|
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10 |
065B7514 |
16 |
400 |
5000 |
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8 |
065B7515 |
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18 |
450 |
6547 |
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/ |
7 |
065B7516 |
20 |
500 |
7800 |
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065B7517 |
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24 |
600 |
11269 |
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5 |
065B7518 |
Dimensions |
˝ |
A |
B |
C |
D |
Weight |
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(DN) |
(mm) |
(mm) |
(mm) |
(kg) |
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2 |
50 |
54 |
60 |
109 |
1.2 |
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2 ½ |
65 |
54 |
73 |
129 |
1.8 |
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3 |
80 |
57 |
89 |
144 |
2.9 |
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4 |
100 |
64 |
114 |
164 |
3.9 |
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5 |
125 |
70 |
141 |
194 |
5.8 |
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6 |
150 |
76 |
168 |
220 |
8 |
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8 |
200 |
95 |
219 |
275 |
14 |
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10 |
250 |
108 |
273 |
330 |
22 |
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12 |
300 |
143 |
324 |
380 |
34 |
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14 |
350 |
184 |
356 |
440 |
70 |
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D |
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16 |
400 |
191 |
410 |
491 |
85 |
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18 |
450 |
203 |
457 |
541 |
118 |
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20 |
500 |
213 |
508 |
596 |
180 |
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24 |
600 |
222 |
610 |
698 |
250 |
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© Danfoss | 2019.04 |
VD.BO.N2.02 | 1 |
Data sheet |
Danfoss NVD 805 |
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Design |
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Pos. |
Description |
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Material |
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EURO |
ANSI |
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Casing DN50-150 |
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Cast iron + epoxy |
EN-GJL-250 |
ASTM A 48 35 B |
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1 |
DN200-300&400 |
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Ductile iron + epoxy |
EN-GJS-400.15 |
ASTM A 536 65-45-12 |
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*DN350&450-600 |
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Cast iron + epoxy |
EN-GJL-250 |
ASTM A 48 35 B |
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2 |
Plates |
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Aluminium bronze |
CuAl10Fe5Ni5 |
C95400 |
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3 |
Seal DN50-300&400 |
EPDM |
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− |
− |
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DN350&450-600 |
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NBR (nitrile) |
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4 |
Spring |
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Stainless steel |
X5CrNiMo17-12-2 |
AISI 316 |
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5 |
Steam DN50-300&400 |
Stainless steel |
X3CrNiMo17-13-3 |
AISI 316 |
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DN350&450-600 |
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X5CrNi18-10 |
AISI 304 |
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6 |
Bearing |
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PTFE |
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− |
− |
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7 |
Eye bolt DN>150 |
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Steel XC15 |
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− |
− |
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8 |
Plugs |
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Brass |
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− |
− |
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Headloss diagram |
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DN |
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Opening pressure |
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(mm) |
KV |
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ζ |
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(m3/h) |
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˝ |
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(mm) |
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2 |
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50 |
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39.40 |
6.30 |
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2 1/2 |
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65 |
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83.00 |
4.10 |
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3 |
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80 |
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138.00 |
3.40 |
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4 |
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100 |
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250.00 |
2.50 |
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5 |
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125 |
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505.00 |
1.45 |
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6 |
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150 |
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891.00 |
1.00 |
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8 |
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200 |
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Near 0 |
1510.0 |
1.10 |
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10 |
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250 |
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2746.00 |
1.10 |
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12 |
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300 |
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3936.00 |
1.10 |
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14 |
|
350 |
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4254.00 |
1.30 |
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16 |
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400 |
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5000.00 |
1.60 |
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18 |
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450 |
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6547.00 |
1.50 |
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20 |
|
500 |
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7800.00 |
1.60 |
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24 |
|
600 |
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11269.00 |
1.60 |
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Direction for use:
•Solid line: Valve completely open
•Dotted line: opening stage of valve
PSI ∆P M/CE
DN
Debit m3/h
Flow gallon/min
2 | VD.BO.N2.02 |
© Danfoss | DHS-SRMT/SI | 2019.04 |