ROBERTSHAW millivolt gas valve for natural gas, used on vented gas stoves such as Quadrafire and other brands

HHT PART 24033–Note propane version is part SRV24034- available here https://www.hechlers.com/product/robert-shaw-natural-gas-valve-7000mvrb-5-lc-p-770-827-498-srv24034/

7000MVRB-5-LC

770-826-497

used on Quadrafire

DV400 Stove, DV750, Sapphire