diaphragm valves principle
When debugging diaphragm in the pipe network, using hose to connect the small presure mearsurement VALVE of the diaphragm valve used to debug and special intelligent instrument, meter will show that the value of fluid flows through the valve (and pressure drop value), through talking to the meter man-machine, after input the flow value required by diaphragm valve to instrument, instrument through calculating, analysis to get the valve opening degree value when the pipe system achieves the waterpower balance. Diaphragm Valves belong to regulating valve, the working principle of internal thread diaphragm valves is through changing the valve core and valve seat gap, changing the flow resistance of fluid flow through the valve, to achieve the purpose of regulating flow. 1. Should not arbitrarily change in diaphragm valves opening degree pipe network system, after installation and having test conditions, using a dedicated intelligent instrument to debug and set for all the diaphragm valves and locking the valve opening degree, so that pipe network hydraulic conditions to achieve balance. During the pipeline system normal operation, you should not arbitrarily change the opening degree of diaphragm valves, in particular, should not change opening locking device. 2. Do not have to install globe valve, when in the maintenance of one circuit, they can close the loop on the diaphragm valve, diaphragm valve at this time to play the role of the globe flow valve, after its repair and then revert to the original locked position. Therefore, if installing the diaphragm valves, you do not have to install the globe valve. 3. System added (or Cancel) loop should be re-debug to the whole set at a pipe network system, an additional (or Cancel) loop, in addition should increase (or off) the corresponding diaphragm valves, in principle, all of the new diaphragm valves and original system curcuit should be re-commissioning (original curcuit formerly branch diaphragm valves do not have to re-adjustment). In the air-conditioning and heating system, the water balance of the water system, that waorkde as energy transmission and distribution is very important.
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