Service life of butterfly valve:
Butterfly valves can operate for more than 10000 times, and still provide "airtight" shut off.
Pressure drop:
If the pressure drop is too big, it can increase energy consumption. However, should know is that the valve is not the only factor in the production of pressure drop pipeline system, lead to the generation of pressure drop and the following factors:cross section of flow of the pipeline and wall of pipeline caused by friction.
Through the change of the flow, when parts of butterfly valve flow characteristics is equivalent to three times as much as the cut-off valve is even higher, equivalent to 75% of the same size of the gate.
Field installation
Installation personnel should first realize the regulating valve is a kind of precision instruments and equipment, no collision drop fall, in order to avoid damage. Specific attention to the following:
(1) The best is vertically installed on the pipeline. Valve weight is bigger and should add supporting frame vibration on occasion.
(2) The body to avoid piping or harmonic flange before and after serious not coaxial under too much stress.
(3) Before the first start after the breakdown maintenance should be flush piping system after install the regulator. Or in front of the valve installation transitional filter.
(4) Shall be in accordance with flow direction arrow on the valve body install regulator.
(5) valve should be installed in the environmental temperature was 20 ℃~ 60 ℃, relative humidity of 95% or less, no serious corrosive gas environment.
