NWM SJ-WDC is single jet water meter with mechanical transmission, liquid protected register for residential application designed and manufacture by NWM and meets to the requirements of Directive 2004/22/EC on measuring instruments; The European Standard EN14154+A1+A2: Water Meter; The International Organization of Legal Metrology OIML R-49: 2006(E): Water meters intended for the metering of cold potable water or comply to ISO4064 Standard.
CHARACTERISTICS:
All the Materials in contact with water, consciously selected by the known resistance to corrosion;
Cold water meter under current standard for lower than 30ºC(T30), but NWM SJ-WDC can be used safely in water temperature up to 50ºC(T50);
The rollers are hermetically sealed by special liquid don't touch with the water which ensures the clear reading in any operating conditions;
The Impeller is the only moving parts in contact with water permitting the most reliable;
The mechanical transmission movement with the maximum reliability;
Non Return Valve to avoid the reserve flow Rate AS OPTION;
| Ø Size |
mm |
Dn15 |
Dn20 |
Dn25 |
Dn32 |
Dn40 |
Dn50 |
| R |
Q3/Q1 |
R160 for Horizontal installation |
| Q4 |
m 3 /h |
3, 125 |
5 |
7, 875 |
12, 5 |
20 |
31, 25 |
| Q3 |
m 3 /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 |
m 3 |
99999.9999 |
999999.9999 |
| Min. Reading |
Liter |
0.05 |
| Pressure Loss |
Δ P |
Δ P< 63 at Q3 |
| Max. Pressure |
MAP |
MAP16 |
| Max. Temperate |
º C |
T30 or T50 |
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