Versatile Duct Compatibility: Standard paddle fits 8" ducts and is trimmable for 6" ductwork installations

The Schneider Electric Erie VS3223 is a rugged 1/2 inch NPT three-way zone valve body designed for demanding hydronic and steam applications

Common indicators include loud vibrating noises

or the boiler failing to proceed past the initial thermostat call

Its robust construction is built to withstand extreme thermal cycling without degradation

Lochinvar & A.O. Smith 100208502 Relay R-22 Versatile Duct Compatibility: Standard paddleThe Lochinvar & A. O. Smith 100208502 Relay is a high performance 1. 5HP pump relay kit engineered for precise load management in commercial and residential hydronic systems. As a critical OEM replacement part, this heavy duty relay ensures seamless electrical sequencing for 1. 5 horsepower circulation pumps, preventing motor lag and protecting the integrated control board from high amperage spikes. This component is widely utilized across the