Type：VVN10HNFAPUMU
VVN12HNFAPUMU
Features：
Heresite coated Body，cones and rods；
316 Stainless rods；
Aluminum body；
The opening's up to the Air flow, 
and there're 48 calibrated points;
150~750pa pressure independent；
Precision: less than ±5% of command；
Turn down ratio: > 16:1；
Responding: less than 1 second；
Pressure independent, inside pressure maintenance period ＜ 1 sec；
No need for spool；
Electric valve；
Vertical or horizontal installation.