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Volumetric Mechanical Water Meter
The Volumetric water meter is a device installed in closed pipelines. It comprises chambers of known volume and a mechanical mechanism driven by water flow, where these chambers successively fill with water and then empty. Measured water enters the meter's inlet, and its pressure rotates the piston. Each full rotation cycle of the piston discharges a fixed volume of water from the meter body. Rotation counts are accumulated via a gear reducer, and the total water volume is registered on the counter.
This Volumetric water meter is suitable for small-scale industrial and domestic water applications. It features high measurement accuracy, low minimum starting flow, excellent dirt resistance, convenient reading, an aesthetically pleasing design, hygienic safety, and extended service life. As a positive displacement instrument, the Volumetric water meter delivers reliable long-term performance.
Basic Parameters
Function | Parameter |
Measurement Accuracy | 2 |
Operating Temperature | Cold water meter: 0.1℃~30℃ |
Allowable Water Pressure | 0.03 MPa~1MPa |
Pressure Loss Class | △p63 |
Flow Profile Sensitivity Class | U0,D0 |
Protection Class | IP68 |
Installation Method | Horizontally or Vertically. |
Flow Parameters
Nominal Diameter | Q3/Q1 | Overload Flow Rate Q4 | Permanent Flow Rate Q3 | Transitional Flow Rate Q2 | Minimum Flow Rate Q1 |
(mm) | (m³/h) | (L/h) | |||
15 | 160 | 3.125 | 2.5 | 25 | 15.625 |
20 | 5 | 4 | 40 | 25 | |
25 | 7.875 | 6.3 | 63 | 39.375 | |
32 | 12.5 | 10 | 100 | 62.5 | |
40 | 20 | 16 | 160 | 100 |
Note:
Actual values shall prevail as marked on the dial.
Maximum Permissible Errors:
In the low flow zone from and including the minimum flow (Q₁) to excluding the transitional flow (Q₂): ±5%
In the high flow zone from and including the transitional flow (Q₂) to and including the overload flow (Q₄): ±2%
Diameter | H(mm) | W(mm) | Connection Thread D | Connection Thread d |
15 | 115 | 90 | G3/4 | R1/2 |
20 | 130 | 96 | G3/4 | R3/4 |
25 | 170 | 112 | G1 1/4 | R1 1/4 |
32 | 260 | 139 | G1 1/2 | R1 1/2 |
40 | 300 | 174 | G2 | R2 |