PCV valve repair

 

PCV valve was carried out maintenance work to be solid, you have the basis of the PCV valve PCV valve repair have more understanding of the basics:

(PCV = Pressure Control Valve) pressure regulating valve that is pressure release valve that is, before the boiler safety valve in the pressure relief valve, generally used power plants supporting U.S. VTI PCV (ERV) are more e-release valve, PCV valve ER e-release valve called the PCV valve site with the crosby safety valve in particular supporting the use of the factory PCV valve VTI supporting the actual U.S. release valve ERV E

     Installation location and function: Install header in the boiler superheater outlet steam pipe, the effect is the same with the exhaust air (usually installed in the hot air exhaust outlet on the front as it moves pressure than the air exhaust operation pressure is low.) Main is the main steam pressure is high pressure according to your setting to automatically open, but it effects directly; vertical atmospheric superheated steam, without reducing temperature, is simple. Main role is to act to reduce the number of safety valve, high pressure, PCV valve will open pressure relief valve set pressure slightly lower than that, if relief is not timely, the safety valve in the action, if the pressure down, the safety valve does not move the. PCV valve is fully open process takes only a few tenths, the action fast, you can ensure the boiler safety valve does not act, especially for the fast simultaneous open turbine bypass, lower combustion intensity, maintaining a series of complex control of drum level to win a valuable buffering time. Although the PCV valve in the action part of the process of loss of working fluid (which is a drawback of this approach,) but the PCV valve open time equivalent loss in the superheated steam emissions well below the cost to re-point furnace. PCV valve in addition to other actions by the set pressure, but also for remote operation by the operating personnel, labor to open or back seat. Operational flexibility to be much better.

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