The AV-390 serves as a common parts kit and is required when building complete linkages for Schneider Electric MA

For optimal performance and to prevent turbulence-induced wear

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Maxitrol MR610-3/4 Valve Els PW 29614 The AV-390 serves as aThe Maxitrol MR610 3 4 is a 3 4" NPT modulating gas valve and integrated regulator designed for atmospheric burners and indirect fired systems. Engineered for the Maxitrol Selectra Series 20 and 21, this valve executes a dual function, managing both precise modulation and pressure regulation without the need for an external mechanical actuator. It supports a maximum inlet pressure of 1 2 PSI and is critical for applications requiring stable, non