196
Flow control
NDV
Type H
1
H
2
m n B l L D A G t
max
NDV-DN6 51 56 8 10 16 19 38 24 13 Pg7 4
NDV-DN8 65 71 12,5 14,5 25 24 48 29 19 Pg11 7
NDV-DN10 68 75 15 17 30 29 58 29 19 Pg11 7
NDV-DN12 82 92 1 7, 5 21 35 34 68 38 23 Pg16 7
NDV-DN16 96 106 22,5 26 45 39 78 38 23 Pg16 7
NDV-DN20 121 134 25 30 50 54 108 49 38 Pg29 10
NDV-DN25 126 139 30 35 60 54 108 49 38 Pg29 10
NDV-DN30 131 144 35 40 70 54 108 49 38 Pg29 10
NDV-DN40 141 154 45 50 90 60 120 49 38 Pg29 10
Materials 1A 18 4A 48
Body Steel Steel Stainless Steel Stainless Steel
O-rings NBR FPM NBR FPM
Tmin / Tmax -20°C / 100°C -20°C / 100°C -30°C / 100°C -20°C / 100°C
MATERIAL CODE DESCRIPTION
AVAILABLE SIZES
DN6 - DN40 (1/8“ to 2“)
Flow control valve for piping-system assembly
Steel / Stainless Steel
DIN ISO 228 Female thread,
ANSI B1.20.1 NPT Female thread,
SAE J 514 ISO/DIS 11926-1 Female thread
CONNECTIONS
ACCESSORIES ON REQUEST
• Panel mounting kit
&
GENERAL DIMENSIONS
page 213
PORTING PATTERN
10.04.2015
197
Flow control
CONNECTION TYPE
Type i d
Weight
[Kg]
NDV-DN6-G1/8 9 G1/8 0,12
NDV-DN8-G1/4 12 G1/4 0,25
NDV-DN10-G3/8 13,5 G3/8 0,40
NDV-DN12-G1/2 14,5 G1/2 0,60
NDV-DN16-G3/4 1 7, 5 G3/4 1,10
NDV-DN20-G1 19,5 G1 2,40
NDV-DN25-G1 1/4 21,5 G1 1/4 2,80
NDV-DN30-G1 1/2 23,5 G1 1/2 3,50
NDV-DN40-G2 25,5 G2 6,24
DIMENSIONS
PN
[bar]
1A 18 4A 48
350 26866* 30689* 33225 30108
350 23791* 30655* 22084 09952
350 18259* 11673* 20828 20476
350 22827* 09792* 16243 22428
350 28849* 30426* 16244 33051
350 30726* 28618* 31240 37628
350 30853* 31513* 32424 37629
350 29461* 31639* 29724 37630
350 41931* 40822* 41934 41935
ORDER CODE PER
MATERIAL COMBINATION
DIN ISO 228
FEMALE THREAD
ANSI B1.20.1 NPT
FEMALE THREAD
SAE J514/ISO/DIS11926-1
FEMALE THREAD
*Article usually in stock.Please note the pressure ratings of the tube connections!
Type i d
Weight
[Kg]
NDV-DN6-1/8"NPT 9 1/8” NPT 0,12
NDV-DN8-1/4"NPT 12 1/4” NPT 0,25
NDV-DN10-3/8"NPT 12 3/8” NPT 0,40
NDV-DN12-1/2"NPT 14 1/2” NPT 0,60
NDV-DN16-3/4"NPT 14 3/4” NPT 1,10
NDV-DN20-1"NPT 19,5 1” NPT 2,40
NDV-DN25-1 1/4"NPT 21 1 1/4” NPT 2,80
NDV-DN30-1 1/2"NPT 24 1 1/2” NPT 3,50
NDV-DN40-2"NPT 19,9 2”NPT 6,30
PN
[bar]
1A 18 4A 48
350 30856* 37631* 37636 37643
350 21346* 30744* 37637 37644
350 21347* 37632* 37638 32407
350 21348* 37633* 29585 37645
350 30861* 14585* 37639 30677
350 30863 37634 37640 32390
350 30865 28835 37641 37646
350 30866 37635 37642 37647
350 41932 41938 41936 41937
Type i d
Weight
[Kg]
NDV-DN8-7/16"UNF 13 7/16"-20 UNF 0,28
NDV-DN10-9/16"UNF 13,5 9/16"-18 UNF 0,42
NDV-DN12-3/4"UNF 14 3/4"-16 UNF 0,69
NDV-DN16-1 1/16"UN 20 1 1/16"-12 UN 1,14
NDV-DN20-1 5/16"UN 20 1 5/16"-12 UN 2,19
NDV-DN25-1 5/8"UN 20 1 5/8"-12 UN 2,89
NDV-DN30-1 7/8"UN 20 1 7/8"-12 UN 3,70
NDV-DN40-2 1/2"UN 20 2 1/2"-12 UN 6,30
PN
[bar]
1A 18 4A 48
350 36257 37672 37673 37674
350 37648 37649 37650 37651
350 37652 37653 37654 37655
350 37656 37657 37658 37659
350 37660 37661 37662 37663
350 37664 37665 37666 37667
350 37668 37669 37670 37671
350 41933 41939 41940 41941
NDVFlow control valve for piping-system assembly
Steel / Stainless Steel
18.12.2015
Flow control valves should not be used as shut-off device. Small leakage rates may occur in fully
closed position. (DIN EN 12266 – leakage rate A-B – test medium water)
!
204
Flow control
NDV, NDRV, NDVP, NDRVPFlow characteristics
The ow values are valid for hydraulic oil (spissitude 880 kg/m
3
) and the kinematic viscosity v of 35 mm
2
/s.
NDV/NDRV/NDVP/NDRVP-DN6
∆p (bar)
Q(l/min)
NDV/NDRV/NDVP/NDRVP-DN8
∆p (bar)
Q(l/min)
NDV/NDRV/NDVP/NDRVP-DN10
∆p (bar)
Q(l/min)
NDV/NDRV/NDVP/NDRVP-DN12
∆p (bar)
Q(l/min)
12.03.2019
handle turns - the higher the number,
the wider open the valve
handle turns - the higher the number,
the wider open the valve
handle turns - the higher the number,
the wider open the valve
handle turns - the higher the number,
the wider open the valve
205
Flow control
NDV, NDRV, NDVP, NDRVPFlow characteristics
NDRV/NDRVP-DN6 - DN40
Q(l/min)
∆p (bar)
NDV/NDRV/NDVP/NDRVP-DN20/25/30/40
∆p (bar)
Q(l/min)
The ow values are valid for hydraulic oil (spissitude 880 kg/m
3
) and the kinematic viscosity v of 35 mm
2
/s.
NDV/NDRV/NDVP/NDRVP-DN16
∆p (bar)
Q(l/min)
12.03.2019
Flow direction: B-A
∆p characteristic line free ow through check valve
handle turns - the higher the number,
the wider open the valve
handle turns - the higher the number,
the wider open the valve
