Multi-jet Dry Type Water Meter
Multi-Jet Dry type of Water Meter （MJ-SDC）
Magnetic shield for external magnet protection;
Strongest and reliable plastic body material;
Magnetic drive with super dry type register;
Non Return Valve for selecting;
5 Rollers or 8 Rollers for Selecting;
With pulse output vision for selecting
INTRODUCTION
NWM MJ-SDC is IMPELLER (turbine) water meter with dry type register for residential application with sizes from Dn15 to Dn50 designed by NWM and meets to the requirements of Standard ISO 4064.
FEATURES
1 Corrosion Resistance
All the materials selected by resistance to corrosion;
2 Anti-interference
The conception of the Magnetic Protection to against the external influences;
3 Directly Reading
The indicator register is of 5 Rollers (Dn40/Dn50 with 6 Rollers) and 4 Pointers;
4 Extra Inlet Filter
The inlet lter prevents water meter from any effect by grit and particulates;
5 Non Return Valve
to avoid the reserve ow Rate AS OPTION;
6 IP68
A copper can super Dry register with IP68 protection AS OPTION;
DIMENSION
| Size(mm) | Dn15 | Dn20 | Dn25 | Dn32 | Dn40 | Dn50 | Dn50-Flange |
| L | 165/190 | 190 | 260 | 260 | 300 | 300 | 300 |
| L1 | 259/284 | 294 | 380 | 384 | 431 | 448 | / |
| D | G3/4B | G1B | G1-1/4B | G1-1/2B | G2B | G2-1/2B | / |
| d | R1/2 | R3/4 | R1 | R1-1/4 | R1-1/2 | R2 | / |
| H | 107.5 | 107.5 | 117 | 118 | 151 | 151 (brass) 176 (iron) | 176 (brass) 181 (iron) |
| H1 | 191 | 191 | 206.5 | 206.5 | 258 | 258 (brass) 283 (iron) | 283 (brass) 288 (iron) |
| W | 95 | 95 | 100 | 100 | 122 | 122 (brass) 145 (iron) | 138 (brass) 145 (iron) |
L1 : the total length with connection and the gasket without compression.
METROLOGY
| DN | mm | 15 | 20 | 25 | 32 | 40 | 50 |
| R | Q3/Q1 | 80 | 80 | ||||
| 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 | ∆p | ∆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
The meters should be installed in HORIZONTAL position with the direction of the ow as indicated by the arrow cast on the meter body with registerface upwards; Pipeline must be ushed before installation; The meter should be constantly full of water during operation;
NWM Suggest to Installation the water meter as:
REMOTE TRANSMISSION
Factory Show
