Resideo TK30PV100SNK Combo Trim Kit 320819-301 This specific model includes a

This specific model includes a manual stem

This kit is specifically designed to replace older 700-450 and 700-460 series units

a 1/4" pilot outlet

With a dedicated "Off" position on the dial

this unit utilizes advanced non-dispersive infrared (NDIR) dual-beam technology to compensate for sensor drift and ensure long-term signal stability

Resideo TK30PV100SNK Combo Trim Kit 320819-301 This specific model includes aThe Resideo TK30PV100SNK Combo Trim Kit provides a comprehensive solution for managing thermal expansion and air elimination in closed loop hydronic heating systems. Centered around a 4. 4 gallon extrol expansion tank, this kit maintains stable system pressure by absorbing the increased volume of heated water, preventing frequent activation of the pressure relief valve. The inclusion of the PV100S Provents air eliminator is critical for removing micro