Danfoss NVD 402 Data sheet

Data sheet

Non return Valve - Danfoss NVD 402

Description

Features:

•Operates in any position

•Minimum head loss

•Silent, reliable sealing, compact

•Exceptional robustness

•Notch provided for cable to submerged pumps until DN 100.

•Closing system: long back axial guiding for reduced displacement

•Sealing guaranteed by a flat seal

•Return spring

Main Data:

•DN 40 - 500

•kVS 47 - 6914 m3/h

•PN 16 (10)

•Medium: - Circulation water, drinking water or

chilled glycolic water up to 50 %

•Medium Temperature: - 10 … 100 °C

•Flanged connection

•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			PS (bar)			Code No.
˝		(m3/h)		(bar)	L1	L2		G1	G2
1 ½	40	47						16		065B7470
2	50	99								065B7471
2 ½	65	159			16			15		065B7472
3	80	222	10/16	16		16		12	16	065B7473
4	100	396						10		065B7474
5	125	619						0.5		065B7475
6	150	890			13			0.5		065B7476
8	200	1120	10							065B7477
10	250	2010	10	10				10		065B7478
12	300	2459	10		10	10			10	065B7479
14	350	2843	10							065B7480
16	400	4370	10	10				0.5		065B7481
20	500	6914	10							065B7482

Dimensions

	˝	A	B	C	D	Weight
		DN	(mm)	(mm)	(mm)	(kg)
	1 ½	40	85	80	150	4.2
	2	50	100	97	165	5.8
	2 ½	65	120	125	185	8.1
	3	80	140	150	200	10.2
	4	100	170	187	220	14.5	B
	5	125	200	220	250	24
	6	150	230	250	285	32
	8	200	289	340	340	53
	10	250	354	420	405	94
	12	300	396	490	460	140	A
	14	350	473	586	533	225
							C
	16	400	560	680	597	312	D
	20	500	750	880	670	540

© Danfoss | 2019.04

VD.BO.M2.02 | 1

Data sheet	Danfoss NVD 402
Design	Pos. Description		Material	EURO	ANSI
		Casing DN 40-400	Cast iron / epoxy	EN 1561 EN-GJL-250	ASTM A 48 35 B
	1				ASTM A 536
		Casing DN 500	Ductile iron / epoxy	EN 1563 EN-GJS-400-15
					65-45-12
	2	Ring seal DN 40-250	EPDM	-	-	1
	3	Ring	Bronze	EN 1982 CuSn12-C GS	-	2
		Guide DN50	Bronze	EN 1982 CuSn5Zn5Pb2-C GS	ASTM A 48 35 B	3
	4	DN 40&60-400	Cast iron / epoxy	EN 1561 EN-GJL-250	ASTM A 536	4
		DN 500	Ductile iron / epoxy	EN 1563 EN-GJS-400-15	65-45-12
						5
	5	Spring	Stainless steel	EN 10270-3 X10CrNi18-8	AISI 302
	6	Seal	EPDM	-	-	6
						7
		Closing system	Brass	EN 12164 CuZn40Pb2 R360
	7				-
		DN 40, DN 50-65	Bronze	EN 1982 CuSn5Zn5Pb2-C GS		8
	7-8	DN 80-400 Stem	Bronze	EN 1982 CuSn5Zn5Pb2-C GS	-
		Check-Valve	Ductile iron / epoxy	EN 1561 EN-GJL-250
	7-8	DN 500 Stem	Bronze	EN 1982 CuSn12-C GS	ASTM A 48 35 B
		Check-Valve	Ductile iron / epoxy	EN 1563 EN-GJS-400-15

Headloss diagram	DN		Opening pressure in mm/CE			KV
	mm				without spring		ζ
˝						(m3/h)
1 ½	40	440	210	320	120	47	1.8
2	50	440	220	330	110	99	1
2 ½	65	450	190	320	130	159	1.1
3	80	450	190	320	130	222	1.3
4	100	500	240	370	130	396	1
5	125	510	210	360	150	619	1
6	150	550	210	380	170	890	1
8	200	590	210	400	190	1120	2
10	250	710	210	460	250	2010	1.5
12	300	820	90	460	365	2459	2.1
14	350	860	100	480	380	2843	2.9
16	400	800	50	410	390	4370	2.1
20	500	1030	0	430	580	6914	2.05

Direction for use:

•Solid line: Valve completely open

•Dotted line: opening stage of valve

			∆P
							<![if ! IE]> <![endif]>M/WC
				<![if ! IE]> <![endif]>M/CE
	<![if ! IE]> <![endif]>PSI

DN

<![if ! IE]>

<![endif]>40

<![if ! IE]> <![endif]>50

<![if ! IE]> <![endif]>65

<![if ! IE]> <![endif]>80

<![if ! IE]> <![endif]>100

<![if ! IE]> <![endif]>125

<![if ! IE]> <![endif]>150

<![if ! IE]> <![endif]>200

<![if ! IE]> <![endif]>250

<![if ! IE]> <![endif]>300

<![if ! IE]> <![endif]>350

<![if ! IE]> <![endif]>400

<![if ! IE]> <![endif]>500

Debit m3/h

Flow gallon/min

2 | VD.BO.M2.02

© Danfoss | DHS-SRMT/SI | 2019.04