Is this a solder or flare connection TXV

The unit features a standard 1/2-inch NPT inlet and out connection

Designed as a primary replacement for Robertshaw INF and VSI series energy regulators

Important Note:

Rugged Durability: The 304 stainless steel plate protects the sensing element from impact and unauthorized adjustment in high-traffic areas

Resideo L4008E1156 Control 320819-301 Is this a solder orThe Resideo L4008E1156 is a professional grade, remote bulb immersion type temperature control engineered for high limit safety applications in hydronic boilers and storage tanks. This high limit aquastat features a manual reset mechanism, ensuring that the system shuts down safely if temperatures exceed the 250 degree factory stop. Built for reliability, this controller uses a micro switch snap acting switch with a single pole, single throw (SPST)