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The 2390-505 and 2390-510 have been designed with an internal high pressure selector relay, primarily for use as a minimum position switch for damper operation when used with actuators having a 5 or 10 psig span respectively. Various dial plates are available for each model and for specific switch applications.
The 2390-515 Pressure Regulator has been designed to allow the manual setting of any desired air pressure, up to main air pressure, where the application requires remote positioning of final control devices, remote control point adjustment of receiver controllers, or any other application where manual setting of an output pressure is desired.
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