White-Rodgers 11D18-1 Hydronic ControlWhite Rodgers 11D18 1 Hydronic Control is your go to hydronic control for boiler and radiant heating systems. This well immersion control supports vertical or horizontal mounting for flexible installation and comes with an extra capillary for extended reach. Engineered for precise temperature management, it covers a 100 to 240 Deg F range with a differential of 5 to 45 Deg F. The SPST, Open On Rise contact configuration delivers reliable switching,

Easy install for reliable operation and reduced downtime

and a closed impeller design with EPDM O-rings and gasket inclusions

This replacement valve delivers reliable ignition

and mechanical systems where accurate local temperature feedback matters

infrared burner

and is approved for UL (Canada and US) and FM safety standards

Port connections: 3/4" straight flange x 3/4" compression

Replaces 006-B for easy upgrades

Designed for precise OEM alignment with Bell & Gossett P53550

and a continuous-duty design that supports 50/60 Hz operation across a wide temperature range (-40 to 150°F)

Key specifications include a straight-through

Mercury-free mechanical design for safe