Mechanical Residential Multi-Jet Wet Type Water Meter Class C / R80 / R160 Plastic body
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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Factory Show
