Multi Position Valves and More - Short #293

HVAC School - For Techs, By Techs · Jul 7, 2026 · 20m

In this short podcast episode, Bryan talks about multi-position service valves and more valve types.

Many typical residential systems have brass service valves with a hex cap and Schrader ports; access happens solely through the Schrader ports (where the cores are). Schraders are restrictive and prone to leaking, and they don't have the ability to back-seat or front-seat. In applications where we need that capability, we use multi-position service valves instead. (Note: CoreMax valves have much higher flow rates, but you can't remove the cores except with a highly specialized tool.)…