This specific RT200 model utilizes a G 3/8 male threaded connection (ISO 228-1)

this module monitors resistance from internal PTC thermistor sensors embedded in the motor windings

including the 35000

and T2 valve bodies

Can the Q4100C9046 replace 80V or 24V igniters

McDonnell & Miller FS7-4SJ Snap Switch R-410A This specific RT200 model utilizesThe McDonnell & Miller FS7 4SJ (Part Number 120171) is a rugged, industrial grade liquid flow switch designed for high pressure applications where standard brass units fall short. This SPDT snap switch features a durable stainless steel body and wetted parts, allowing it to withstand a maximum pressure of 1000 PSI. Built with a 1 1 4" BSPT connection, it is engineered for precise flow sensing in large pipe systems across hydronic heating, industrial