As a general purpose limit switch

ensuring compatibility with various HVAC control signals

making it a reliable choice for field replacements in condensers and heat pumps

this relay prevents localized power surges and equipment strain by enforcing a precise interval before circuit activation

McDonnell & Miller 347100 Strainer Basket Assembly Els PW 17895 As a general purpose limitAs an HVAC veteran, you know that a clogged feeder is the fastest way to a dry firing boiler. The McDonnell & Miller 347100 Strainer Basket Assembly (Model SA101 38) is the exact OEM specifies for maintaining flow integrity in 47, 51, and 101 A Series boiler water feeders. This assembly features a precision 2 3 8 inch strainer length and rugged stainless steel construction to trap scale and sediment before they reach the critical feed valve cartridge.