BOV-16

Features:
1) Quality control: all our BOVs are thoroughly tested to make sure the valve
    opens and closes properly at the set rates on the springs. The allowable errors
    for opening and closing of the valves are controlled within 2% more or less.
    The servicing life of springs and diaphragms used for the BOV lasts for 200,000
    times of operation.
2) Materials used for making BOV are high quality aluminum alloy 
3) Accessories: flanges, bolts and gaskets are included