Can I use a reducer on the discharge piping

This part is specifically engineered for used with Robertshaw 1890 and 1898 series assemblies and is the standard replacement for #70 and #71 pilot applications

It maintains the same 1/2" HEX RH dimensions and threading for a drop-in installation on compatible gas assemblies

making it suitable for demanding commercial HVAC environments

Thermal Resistance: Materials selected to withstand localized heat near the burner assembly without degrading

Emerson Alco 027918 Valve Els PW 17895 Can I use a reducerThe Emerson Alco 027918 Valve, specifically the TER series thermostatic expansion valve, is engineered for high capacity commercial refrigeration and AC applications. Featuring a 7 8" ODF sweat or 1 1 8" ODM inlet and an identical 7 8" ODF 1 1 8" ODM outlet, this straight thru body flow valve ensures minimal pressure drop across the orifice. The balanced port construction compensates for varying head pressures, maintaining precise superheat control