How do I size this valve for a boiler replacement

Using this contactor with a 240V control circuit will cause immediate coil failure

It shares the same electrical specifications

95-inch ceramic insulator and a 1/2" NPT threaded connection for a pressure-tight seal

Weil McLain 511-624-643 Sensor Assembly Els PW 17895 How do I size thisThe Weil McLain 511 624 643 Pressure Sensor Assembly is a critical OEM replacement component designed for high performance hydronic systems. This burner pressure sensor kit includes the transducer and junction box, providing the precise feedback necessary for modulating boiler control and combustion safety. Unlike standard switches, this assembly integrates a no siphon sensor design to deliver accurate static and dynamic pressure differential readings