Danfoss NVD 805 Data sheet

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			PS (bar)			Code No.
		(m3/h)		(bar)	L1	L2		G1	G2
2	50	39.4						16		065B7505
2 ½	65	83						15		065B7506
3	80	138			16			12		065B7507
4	100	250						10	16	065B7508
5	125	505								065B7509
6	150	891			13					065B7510
8	200	1510	10/16	16		16		0.5		065B7511
10	250	2746							14	065B7512
12	300	3936							11	065B7513
14	350	4254			10				10	065B7514
16	400	5000							8	065B7515
18	450	6547						/	7	065B7516
20	500	7800								065B7517
24	600	11269							5	065B7518

Dimensions	˝	A	B	C	D	Weight
		(DN)	(mm)	(mm)	(mm)	(kg)
	2	50	54	60	109	1.2
	2 ½	65	54	73	129	1.8
	3	80	57	89	144	2.9
	4	100	64	114	164	3.9
	5	125	70	141	194	5.8
	6	150	76	168	220	8
	8	200	95	219	275	14
	10	250	108	273	330	22
	12	300	143	324	380	34
	14	350	184	356	440	70					D
	16	400	191	410	491	85
	18	450	203	457	541	118
	20	500	213	508	596	180
	24	600	222	610	698	250

© Danfoss | 2019.04

VD.BO.N2.02 | 1

Data sheet	Danfoss NVD 805
Design
		Pos.	Description						Material			EURO		ANSI
			Casing DN50-150						Cast iron + epoxy			EN-GJL-250		ASTM A 48 35 B
		1	DN200-300&400						Ductile iron + epoxy			EN-GJS-400.15		ASTM A 536 65-45-12
			*DN350&450-600						Cast iron + epoxy			EN-GJL-250		ASTM A 48 35 B
		2	Plates						Aluminium bronze			CuAl10Fe5Ni5		C95400
		3	Seal DN50-300&400						EPDM			−		−
			DN350&450-600						NBR (nitrile)
		4	Spring						Stainless steel			X5CrNiMo17-12-2		AISI 316
		5	Steam DN50-300&400						Stainless steel			X3CrNiMo17-13-3		AISI 316
			DN350&450-600									X5CrNi18-10		AISI 304
		6	Bearing						PTFE			−		−
		7	Eye bolt DN>150						Steel XC15			−		−
		8	Plugs						Brass			−		−
Headloss diagram
			DN			Opening pressure
							(mm)				KV
												ζ
											(m3/h)
		˝		(mm)
	2			50							39.40	6.30
	2 1/2			65							83.00	4.10
	3			80							138.00	3.40
	4			100							250.00	2.50
	5			125							505.00	1.45
	6			150							891.00	1.00
	8			200			Near 0				1510.0	1.10
	10			250							2746.00	1.10
	12			300							3936.00	1.10
	14			350							4254.00	1.30
	16			400							5000.00	1.60
	18			450							6547.00	1.50
	20			500							7800.00	1.60
	24			600							11269.00	1.60

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