and bypass loops within hydronic systems

Does the shape matter if the specs match

the 100208485 is the updated superseding part number for the RLY2042K

and 3B electrode fittings

Weil McLain 385-600-099 Assembly Els PW 29614 and bypass loops within hydronicThe Weil McLain 385 600 099 Observation Port Assembly is a critical component designed for the back section of high output commercial boilers, specifically engineered for Weil McLain 80, 88, and 94 Series units. This complete assembly provides technicians with a reliable means to monitor boiler combustion performance and flame characteristics without breaching the combustion chamber's pressure seal. Built to withstand the extreme thermal cycling and