Weil-McLain 510312209 High Limit Control

The Weil-McLain 510312209 high limit temperature control is a reliable SPST automatic-recycle control with a 140-240°F range and a fixed 10°F subtractive differential. It mounts in a 3/4" NPT control well and provides the high-limit function on MGB-17 through MGB-38 boilers, where separate controls handle operating and high-limit duties.