Model CD74TRP-E is an inferential, single stream, straight reading type meter for cold water, and it’s suitable for domestic use. The sealed register mechanism, which is filled with special liquid, is equipped with a suitable pressure compensating device. Brass body and adopt all antiseptic material, no leak. It has all the advantages which the wet or dry dial water meters possess.
WORKING CONDITION：
*The max. admissible water pressure：1.6MPa（16bar）
*Water temp.：not more than 50℃
Maximum permissible error:
Between qt (included) and qs is ±2%;
Between qmin and qt (excluded) is ±5%.
NOTE: The technical data conform to ISO4064 standard, class B.
FLOW-ERROR CURVE
SPECIFICATION AND OVERAL DIMENSIONS
|
Description |
Unit |
Hydraulic data and dimensions |
|
Nominal size |
mm |
15 |
20 |
25 |
|
inch |
1/2 |
3/4 |
1 |
|
Overload flow-rate (qs) |
m3/h |
3 |
5 |
7 |
|
Permanent flow-rate (qp) |
m3/h |
1.5 |
2.5 |
3.5 |
|
Transitional flow-rate (qt) |
m3/h |
0.12 |
0.2 |
0.28 |
|
Minimum flow-rate (qmin) |
m3/h |
0.03 |
0.05 |
0.07 |
|
Max. reading |
m3 |
99999.9999 |
99999.9999 |
99999.9999 |
|
Min. reading |
m3 |
0.00005 |
0.00005 |
0.00005 |
|
Max. working pressure |
MPa |
1.6 |
1.6 |
1.6 |
|
ΔP at the qs |
MPa |
≤0.1 |
≤0.1 |
≤0.1 |
|
L |
mm |
110 |
130 |
160 |
|
I |
mm |
190 |
230 |
280 |
|
H |
mm |
89 |
89 |
89 |
|
B |
mm |
88 |
88 |
88 |
OVERALL DIMENSIONS PRESSURE LOSS CURVE
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