High accuracy, accurate measurement, vertical installation, convenient maintenance, technical index up to GB/T778.1~3-2018 standard, liquid seal series counter separated from the tested water can keep the indication clear for a long time, parts in contact with water are made of high quality anticorrosive and antifouling material, and DN15~25 adopts standard pipe thread.
Product parameters:
Nominal（DN） | Overload flow rate （Q4） | Nominal flow rate （Q3） | Transit flow rate（Q2） Q2/Q1=1.6 m3/h | Minimum flow rate（Q1） R Value Q3/Q1 m3/h | Minimum index value | Indicator Range | ||||
Q4/Q3=1.25 m3/h | R100 | R125 | R160 | R100 | R125 | R160 | m3 | m3 | ||
15 | 3.125 | 2.5 | 0.04 | 0.032 | 0.025 | 0.025 | 0.02 | 0.016 | 0.0001 | 99999 |
20 | 5 | 4 | 0.064 | 0.05 | 0.04 | 0.04 | 0.032 | 0.025 | 0.0001 | 99999 |
25 | 7.875 | 6.3 | 0.1 | 0.08 | 0.063 | 0.063 | 0.05 | 0.04 | 0.0001 | 99999 |
External Dimensions（mm）
Nominal diameter （DN） | length （mm） | width (mm) | height (mm) | Connecting thread | Weight (ductile iron) （Kg） | ||
H | H1 | B | L | d | D | ||
15 | 189 | 95 | 96 | 142 | R1/2 | G3/4 B | 1.8 |
20 | 204 | 100 | 96 | 157 | R3/4 | G1 B | 2 |
25 | 225 | 107 | 101 | 167 | R1 | G1 1/4 B | 3 |
