Except for the above sampling valve, other valves require manual calculations given by the manufacturer (pressure drop), the valve size and required processing to the final drawing signature subject;
Except for the above sampling valve, other manual valves need the calculation book given by the manufacturer (pressure drop), valve processing size and requirements to the final drawing signed;
Except for the above sampling valves, other manual valves need the calculation sheet (pressure drop) provided by the manufacturer, and the valve processing size and requirements shall be subject to the signature of the final drawing;<br>