Common Questions What is the lead wire color code for identifying the platinum element

the A21348-1 facilitates a reliable rebuild when performing routine steam trap maintenance or internal mechanism inspections

and LD series heater models

leading to equipment failure

McDonnell & Miller 304300 Snap Switch Els PW 17895 Common Questions What is theThe McDonnell & Miller 304300, also identified as the FS1 17 Snap Switch Assembly, is the critical single pole, double throw (SPDT) replacement component designed for Series FS1, FS4 3D, FS5, FS6, and AFE 1 liquid flow switches. This industrial grade switch is engineered specifically for high sensitivity applications in hydronic heating and HVAC systems where detecting low or moderate flow rates is vital for system protection. As an OEM replacement