Danfoss NVD 895 Data sheet

Data sheet

PED 97/23/CE

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.

Dimensions

16

PS (bar)

16

0.5 065B7501

D

Code No.

065B7495

16

DN

50 35.7

65 64.7 15 065B7496

80 116.1 12 065B7497

100 253.3 10 065B7498

125 4 81.8 0.5 065B7499

150 698.4 13 0.5 065B7500

200 1345. 5

250 2249.5 0.5 14 065B7502

300 3098 0.5 11 065B7503

400 5867 - 8 065B7504

DN

50 50 54 60 10 9 1.2

65 65 54 73 129 1.8

80 80 57 89 144 2.9

100 100 64 114 164 3.9

125 12 5 70 141 194 5.8

150 150 76 168 220 8

200 200 95 219 275 14

250 250 108 273 330 22

300 300 143 324 380 34

400 400 191 410 491 83

Kv

(m3/h)

A

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

PN

10/16 16

PFA

(bar)

L1 L2 G1 G2

16

10

Weight

(kg)

© Danfoss | 2019.04 VD.BO.L2.02 | 1

Data sheet Danfoss NVD 895

ON/MIN

PSI

P

Design

Pos. Description Material EURO ANSI

Casing DN50-150

1

DN200-400

2 Plates Stainless steel GX 5CrN i19-10 AISI 304

3 Seal EPDM − −

4 Spring Stainless steel X5 CrN iMo17 -12-2 AISI 316

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

6 Bearing PTFE − −

7 Eye bolt DN>150 Steel XC15 − −

8 Plugs Brass − −

Cast iron + epoxy
Ductile iron + epox y

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

ASTM A 48 35 B
ASTM A 536 60-40 -18

Headloss diagram

DN

50

Opening pressure

(mm)

Kv

(m3/h)

35.7 7. 81

65 64.7 6 .81

80 116 .1 4.86

100 253.3 2.49

125 4 81.8 1.68

150 698.4 1. 66

Near 0

200 1345. 5 1.41

250 2249.5 1.23

300 3098 1.35

400 5867 1.2

Direction for use:

• Solid line: Valve completely open

• Dotted line: opening stage of valve

M/CE

15

10

8
7
6

5

4

3

2

1

M/WC

10

8
7
6

5

4

3

2

1.5

1

.8
.7
.6

.5

.4

.3

.2

.15

DN

ζ

80

65

50

100

125

150

200

250

300

400

234 5

8

10

8

6

10

15

20253040506080

30

40

60

15

20

25

80

100

100

150

300

400

600

800

500

250

150

200

300

400

600

800

500

250

1000

1500

2000

2500

2000

3000

2500

1000

1500

3000

4000

5000

6000

8000

10000

© Danfoss | DHS-SRMT/SI | 2019.042 | VD.BO.L2.02

4000

15000

5000

DEBIT M3/H

6000

FLOW GALL

0

20000