MJ-WDC
Multi-Jet/Wet Type
DN15~50
INTRODUCTION
MJ-WDC is IMPELLER (turbine) water meter with wet type register for residential application with sizes from Dn15 to Dn50 designed by NWM and meets to the requirements of Directive 2004/22/EC on measuring instruments and of European Standard EN14154.
FEATURES
1 Corrosion Resistance
All the materials selected by resistance to corrosion;
2 High Stability
The Impeller is the only moving parts in contact with water permitting the most reliable;
3 Extra Inlet Filter
The filter at the inlet of the meter body permits cleaning it without breaking the metrological seal; 4 Non Return Valve to avoid the reserve flow Rate AS OPTION;
SPECIFICATIONS
DIMENSIONS
|
Size(mm)
|
Dn15
|
Dn20
|
Dn25
|
Dn32
|
Dn40
|
Dn50
|
Dn50-Flange
|
|
L
|
165
|
190
|
260
|
260
|
300
|
300
|
300
|
|
L1
|
259
|
294
|
380
|
384
|
384
|
448
|
/
|
|
D
|
G3/4B
|
G1B
|
G1-1/4B
|
G1-1/2B
|
G1-1/2B
|
G2-1/2B
|
/
|
|
d
|
R1/2
|
R3/4
|
R1
|
R1-1/4
|
R1-1/2
|
R2
|
/
|
|
H
|
107.5
|
107.5
|
117.5
|
117.5
|
141.5
|
177
|
184
|
|
H1
|
191
|
191
|
206.5
|
206.5
|
256.5
|
292
|
299
|
|
W
|
94
|
94
|
98
|
98
|
122
|
145
|
165
|
L1 : the total length with connection and the gasket without compression.
Option: Different length of the Water Meter under different size.
|
Size(mm)
|
Dn15
|
Dn20
|
Dn25
|
Dn32
|
Dn40
|
Dn50
|
Dn50-Flange
|
|
L
|
110
|
160
|
160
|
160
|
200
|
280
|
280
|
|
120
|
/
|
220
|
230
|
245
|
/
|
/
|
|
|
130
|
/
|
225
|
/
|
/
|
/
|
/
|
|
|
145
|
/
|
/
|
/
|
/
|
/
|
/
|
|
|
170
|
/
|
/
|
/
|
/
|
/
|
/
|
|
|
190
|
/
|
/
|
/
|
/
|
/
|
/
|
Option: Dn50 with Flange Ends and Screw Ends both in Brass body and Cast Iron Body.
METROLOGY
|
DN
|
mm
|
15
|
20
|
25
|
32
|
40
|
50
|
|
R
|
Q3/Q1
|
160
|
160
|
||||
|
Q4
|
m3/h
|
3.125
|
5
|
7.875
|
12.5
|
20
|
31.25
|
|
Q3
|
m3/h
|
2.5
|
4
|
6.3
|
10
|
16
|
25
|
|
Q2
|
l/h
|
25
|
40
|
63
|
100
|
160
|
250
|
|
Q1
|
l/h
|
15.625
|
25
|
39.375
|
62.5
|
100
|
156.25
|
|
Max reading
|
m3
|
99 999.9999
|
999 999.9999
|
||||
|
Min reading
|
Liter
|
0.05
|
|||||
|
Pressure loss
|
Δp
|
∆p<63
|
|||||
|
Max Pressure
|
MAP
|
MAP16
|
|||||
|
Max Temperate
|
℃
|
T30 / T50
|
|||||
(For different Q3 and R, please contact with NWM manufacture).
MAX PERMISSION ERROR
a.In the lower zone (Q1≤Q≤Q2): maximum permission error is ±5%
b.In the upper zone (Q2≤Q≤Q4): maximum permission error is ±2%( T≤30˚C), maximum permission error is ±3 (30˚C<T≤50˚C)
INSTALLATION
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