Built with a rugged NPT 1/4-18 male connection and a DIN 43650 plug (EN 175301-803-A)

utilizing this original equipment wiring harness ensures reliable signal transmission and long-term operational stability in demanding residential or commercial environments

The Weil-McLain 511-624-521 Pressure Switch is a critical safety component designed for precise differential pressure sensing in high-efficiency Weil-McLain boilers

Key Technical Benefits Direct Cross-Reference: Seamlessly replaces the discontinued CS4AF01A18 model without requiring valve body modifications

Field Controls 46205414 Vent Kit Els PW 17895 Built with a rugged NPTThe Field Controls 46205414 vent kit (Model SWG 4G) is a specialized side wall venting solution engineered for 80+ gas draft induced furnaces. This comprehensive kit integrates a 4" SWG Power Venter with a 4" MG 1 Draft Control and a CK 43F control kit to provide active mechanical draft. Designed for installations where a conventional chimney is unavailable or compromised, this system ensures proper combustion by venting flue gases directly through an