you can use the Robertshaw 1751-013 conversion kit to adapt this 700 series millivolt valve for liquid propane use

When equipped with the factory-installed 13A15 vent limiter

the belt should be re-tensioned to account for initial seating in the sheaves to prevent glazing and premature wear

The AM101R-US-1 utilizes a Teflon-coated shuttle to resist mineral buildup

Functional Devices PSH40A Power Supply 320788-702 you can use the RobertshawThe Functional Devices PSH40A is a robust 120 to 24 Vac power supply designed for critical building automation and HVAC control applications. This enclosed 40VA power supply features a high performance split bobbin transformer that provides isolated low voltage power, essential for protecting sensitive electronic controllers. Housed in a durable NEMA 1 metal enclosure, the PSH40A includes an integrated 10 Amp main circuit breaker and a dedicated 24