this Siemens combustion valve body provides the precision needed for modulating hot water or chilled water service in complex HVAC loops

handling 110V at 50Hz or 120V at 60Hz with precision

When performing a regulator spring conversion or routine maintenance

the K90-13 is an alternate kit with different trip characteristics

Resideo TH106 Thermostat 326070-701 this Siemens combustion valve bodyThe Resideo TH106 U is a high capacity line voltage programmable thermostat designed for precision control of electric heating systems. Engineered with a TRIAC switching mechanism, this unit provides silent operation and unsurpassed temperature accuracy within 0. 27F (0. 15C), effectively eliminating the temperature swings common in mechanical or relay based controls. It is compatible with a 120 240 Vac power supply and supports a maximum resistive