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Woltman Type Water Meter Class B (40mm-600mm)
Application
For measurement of high flows of hot potable water passing through the pipelines in sizes of 40mm to 600mm.
Features
*Magnetic drive, lower transmission resistance.
*Sealed dry dial register ensures clear reading.
*The measuring mechanism can be removable from the body for checking, maintaining and replacing, and the body needn't be dismantled from the pipeline.
*Inter-exchangeable parts.
*Low pressure loss. Long working life.
*Can be equipped with reed switch (register can't rotate).
Standard Compliance
Technical data conforms to ISO 4064 Class B, R50, R63 and R80 standard
Working Conditions
Water temperature: ≤50ºC for cold water meter
Water temperature: ≤90ºC for hot water meter
Water pressure: ≤1MPa or 1.6MPa or 4.0 MPa optional (10bar or 16bar r 40 bar optional)
Installation requirements
*The meter can be installed in horizontal, vertical or inclined position.
*A horizontal position with the register face upwards is recommended.
*Pipeline must be flushed before installation.
*The meter should be constantly full of water during operation.
Maximum Permissible Error
In the lower zone from Qmin(Q1) inclusive up to but excluding Qt (Q2) is ±5%.
In the upper zone from Qt(Q2) inclusive up to and including Qmax(Q4) is ±2%(cold water meter).
In the upper zone from Qt(Q2) inclusive up to and including Qmax (Q4) is ±3% (hot water meter). 
MAIN TECHNICAL DATA According to ISO4064 :2003 (Old Standard)
Meter Size | Measuring | Max Flow | Nominal Flow | Transitional Flow | Min Flow | Min Reading | Max Reading | ||
mm | class | m³/h | m³ | ||||||
40 | B | 20 | 10 | 0.8 | 0.2 | 0.0002 | 999999 | ||
50 | B | 30 | 15 | 3 | 0.45 | 0.0002 | 999999 | ||
65 | B | 50 | 25 | 5 | 0.75 | 0.0002 | 999999 | ||
80 | B | 80 | 40 | 8 | 1.2 | 0.002 | 999999 | ||
100 | B | 120 | 60 | 12 | 1.8 | 0.002 | 999999 | ||
125 | B | 200 | 100 | 20 | 3 | 0.002 | 999999 | ||
150 | B | 300 | 150 | 30 | 4.5 | 0.002 | 999999 | ||
200 | B | 500 | 250 | 50 | 7.5 | 0.002 | 999999 | ||
250 | B | 800 | 400 | 80 | 12 | 0.002 | 999999 | ||
300 | B | 1200 | 600 | 120 | 18 | 0.02 | 9999999 | ||
350 | B | 1600 | 800 | 160 | 24 | 0.02 | 999999999 | ||
400 | B | 2000 | 1000 | 200 | 30 | 0.02 | 999999999 | ||
500 | B | 3000 | 1500 | 300 | 45 | 0.02 | 999999999 | ||
600 | B | 6000 | 3000 | 600 | 90 | 0.02 | 999999999 | ||
MAIN TECHNICAL DATA According to ISO4064:2005 （New Standard）
Meter Size | Measuring | Q4 | Q3 | Q2 | Q1 | Min Reading | Max Reading |
mm | R | m³/h | m³ | ||||
40 | 63 | 20 | 16 | 0.41 | 0.25 | 0.0002 | 999999 |
50 | 63 | 31.25 | 25 | 0.63 | 0.40 | 0.0002 | 999999 |
65 | 80 | 50 | 40 | 0.80 | 0.50 | 0.0002 | 999999 |
80 | 80 | 78.7 | 63 | 1.26 | 0.79 | 0.002 | 999999 |
100 | 80 | 125 | 100 | 2.00 | 1.25 | 0.002 | 999999 |
125 | 80 | 200 | 160 | 3.20 | 2.00 | 0.002 | 999999 |
150 | 80 | 312.5 | 250 | 5.00 | 3.13 | 0.002 | 999999 |
200 | 63 | 500 | 400 | 10.16 | 6.35 | 0.002 | 999999 |
250 | 50 | 787 | 630 | 20.16 | 12.60 | 0.002 | 999999 |
300 | 50 | 1250 | 1000 | 32 | 20 | 0.02 | 9999999 |
350 | 50 | 2000 | 1600 | 51.2 | 32 | 0.02 | 999999999 |
400 | 50 | 3125 | 1600 | 51.2 | 32 | 0.02 | 999999999 |
500 | 50 | 5000 | 2500 | 80 | 50 | 0.02 | 999999999 |
600 | 50 | 7870 | 4000 | 128 | 80 | 0.02 | 999999999 |
Dimensions and Weight
Meter size | Length L | Width W | Height H | Connecting thread | ||
mm | mm | D | Bolt circle Dia D1 | Connecting bolt | ||
40 | 200 | 256 | 400 | 165 | 125 | 4xM16 |
50 | 200 | 256 | 400 | 165 | 125 | 4xM16 |
65 | 200 | 256 | 400 | 185 | 145 | 4xM16 |
80 | 225 | 276 | 400 | 200 | 160 | 8xM16 |
100 | 250 | 286 | 400 | 220 | 180 | 8xM16 |
125 | 250 | 301 | 400 | 250 | 210 | 8xM16 |
150 | 300 | 346 | 500 | 285 | 240 | 8xM20 |
200 | 350 | 373 | 500 | 340 | 295 | 8xM20 |
250 | 450 | 493 | 730 | 395 | 350 | 12xM20 |
300 | 500 | 516 | 730 | 445 | 400 | 12xM20 |
350 | 500 | 560 | 730 | 520 | 470 | 12xM21 |
400 | 600 | 631 | 830 | 565 | 515 | 16xM24 |
500 | 800 | 785 | 930 | 715 | 650 | 20xM30 |
600 | 1000 | 865 | 1030 | 840 | 770 | 20xM33 |
Our products and solutions are greatly recognized and trustworthy by customers and may fulfill constantly changing financial and social requires for Removable Element Woltman Dry Type Cold Dial / IP68 / Waterproof with Copper Water Meter. For more than ten years experience in this filed, our company has gained high reputation from home and abroad. We realize that the fundamental condition for the development of our business is to win customers' satisfaction by pursuing first-class quality, reasonable price, strict delivery time and considerate service.
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