AO Smith VR8300A3518 VR8300 Gas Valve, 1-Stage, Standard Opening, 1/2 x 3/4 Inch, NPT, 1/2 psi, Standing Pilot Ignition, 30000 - 290000 BtuH, Natural Gas, 24 VAC Coil, 1/4 Inch Quick Connect Male Terminals, Upright/Vertical Mount, 0 - 175 deg F, 5-3/8 Inch L x 4-1/16 Inch W x 2-11/16 Inch D, Includes: Q340 Thermocouple