Product Description 
 1.5 Flow Range Table 



 Nominal diameter (mm) Model Flow range (m3 / h) maximum pressure loss (kPa) range than the starting flow rate (m3 / h) 
 The 25 QWLJ-025 2.5 25 0.7 10:1 0.4 
 40 QWLJ-040 6 ~ 60 0.7 10:1 1.2 
 50 QWLJ-050 8 ~ 100 0.6 12:1 1.8 
 80 QWLJ-080 17 430 0.6 25:1 3.0 
 # 100 QWLJ-100 25 ~ 550 0.7 22:1 5.0 
 150 QWLJ-150 37 ~ 1500 0.8 40:1 10 
 200 QWLJ-200 60 ~ 2400 0.8 40:1 15 
 250 QWLJ-250 90 ~ 3600 0.9 40:1 15 
 300 QWLJ-300 150 ~ 6000 0.9 40:1 15 
 400 QWLJ-400 260 ~ 8000 0.9 30:1 15 


 1.0 Flow Range Table 



 Nominal diameter (mm) Model Flow range (m3 / h) maximum pressure loss (kPa) range than the starting flow rate (m3 / h) 
 The 25 QWLJ-025 4 30 0.7 7:1 0.4 
 40 QWLJ-040 7 60 0.7 8:1 1.2 
 50 QWLJ-050 10 ~ 100 0.6 10:1 1.8 
 80 QWLJ-080 20 400 0.6 20:1 3.0 
 100 QWLJ-100 30 ~ 550 0.7 18:1 5.0 
 150 QWLJ-150 50 ~ 1500 0.8 30:1 10 
 200 QWLJ-200 60 ~ 2000 0.8 33:1 15 
 250 QWLJ-250 100 ~ 3000 0.9 30:1 15 
 300 QWLJ-300 200 ~ 4000 0.9 20:1 15 
 400 QWLJ-400 400 ~ 8000 0.9 20:1 15 


 Technical indicators 



 Conditions of use nominal diameter nominal pressure repeatability of explosion-proof rating protection class 
 Ambient temperature: -30 ℃ ~ +60 ° C; DN25-DN400 1 ~ 4mPa of better than 0.2% ExdllBT4 IP65 
 Medium temperature: -40 ℃ ~ +85 ℃; 
 Relative Humidity: 5% ~ 95%; ExiallBT4 
 Atmospheric pressure: 70kPa ~ 106kPa; 


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