Danfoss NVD 805 Data sheet

Data sheet

PED 97/23/CE

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.

Dimensions

16

PS (bar)

0.5

Code No.

16

16

10 065B 7514

/

7

065B7505

065B7509

06 5B 7511

065 B7516

D

˝ DN

2 50 39.4

2 ½ 65 83 15 065B7506

3 80 13 8 12 065B7507

4 100 250 10 065B7508

5 125 505

6 150 891 13 065 B7510

8 20 0 1510

10 250 2746 14 065 B7512

12 300 3936 11 06 5B7513

14 350 4254

16 400 5000 8 0 65B7515

18 450 6547

20 500 7800 06 5B7517

24 600 11269 5 065B7518

˝

2 50 54 60 109 1.2

2 ½ 65 54 73 12 9 1.8

3 80 57 89 144 2.9

4 100 64 114 164 3.9

5 12 5 70 141 194 5.8

6 15 0 76 168 220 8

8 200

10 250

12 300

14 350

16 400

18 450

20 500

24 600

A

(DN)B(mm)C(mm)D(mm)

Kv

(m3/h)

95 219 275 14

108 273 330 22

143 324 380 34

184 356 440 70

191 410 491 85

203 457 541 11 8

213 508 596 180

222 610 698 250

PN

10/16 16

PFA

(bar)

Weight

(kg)

L1 L2 G1 G2

16

10

© Danfoss | 2019.04 VD.BO.N2.02 | 1

Data sheet Danfoss NVD 805

Design

Pos.

Description Material EURO ANSI

Casing DN50-150

1

DN200-300&400
*DN350&450- 600

2 Plates Aluminium bronze CuAl10Fe5Ni5 C9540 0

Seal DN50-300&400

3

DN350&450-600

4 Spring Stainless steel X 5Cr NiM o17-12-2 AISI 316

Steam DN50-300 &400

5

DN350&450-600
6 Bearing PTFE − −
7 Eye bolt DN>150 Ste el XC15 − −
8 Plugs Brass − −

Cast iron + epoxy
Ductile iron + epox y
Cast iron + epoxy

EPDM
NBR (nitrile)

Stainless steel

EN -G JL-2 50
EN-GJS-400.15
EN -G JL-2 50

− −

X3 CrN iMo17 -13-3
X5Cr Ni18-10

ASTM A 48 35 B
ASTM A 536 65-45-12
ASTM A 48 35 B

AISI 316
AISI 304

Headloss diagram

DN

˝

2

2 1/2

3
4
5
6
8

10

12
14
16
18
20
24

Opening pressure

(mm)

(mm)

50
65 83.00 4.10

80 138 .00 3.40
100 250.00 2.50
125 505.00 1. 45
150 891.0 0 1.0 0
200
250
300
350
400
450
500
600

Near 0

(m3/h)

39.40 6.30

1510.0 1.10

2746. 00 1.10

3936.00 1.10

4254.00 1.30

5000.00 1.60
65 47.0 0 1.50

7800.00 1.60

11269 .0 0

Direction for use:

• Solid line: Valve completely open

• Dotted line: opening stage of valve

∆P

M/CE

PSI

DN

K

V

ζ

1.60

Debit m

3

/h

Flow gallon/min

© Danfoss | DHS-SRMT/SI | 2019.042 | VD.BO.N2.02