Manufacturer Name: Robertshaw Product Number: 710-503 OEM Part Number: 710-503 Product Description: Mv 1/2" Hi-Lo Nat.Gas Weight:1.7lbs/771.11g The Robertshaw 710-503 MV. It easily accommodates smaller boilers, furnaces, and heaters thanks to its 1/2-inch inlet and output design. This valve effectively converts a little electrical current into a signal th... https://www.partshnc.com/710-503-robertshaw-mv-12-hi-lo-natgas