0820637 Gas Valve Natural Gas Hi-Lo Manual Sit 820 Series

0820637 SIT Controls Nova Millivolt Vent Free Natural Gas valve is a remote ready gas valve with variable flame adjustment used for vent free Fireplaces, Gas Logs and Non vented Stoves and other appliances.

The Sit Controls gas valve 0820637 has the following specifications.

Split-system millivolt control Un-Vented Natural Gas valve for use in non vented appliances.
HI/LO burner adjustment with manually operated knob
Minimum voltage 145mV Coil resistance 2.25±0.5
Thermo-Electric Unit Hold-in current less than 200Ma
Drop-out current Greater than 80mA with coil resistance 0.018± 0.003
Gas type Natural Gas HI/LO action Manual Pressure set-point 3.5” w.c. ± 0.3
Range of adjustment 3.5” w.c. -1.6” w.c. Set at 30K btu/hr
Thermocouple connection M8x1
Pilot Fitting 7/16 UNS
Natural Gas Inlet 3/8 in. NPT
Natural Gas Outlet 3/8 in. NPT
Maximum natural gas inlet pressure 1/2 PSIG Ambient operating
temperature 32° to 175° F
Maximum @ 1 in. w.c. pressure drop 100,000 BTU per hour Regulation capacity 5,000 to 195,000 BTU AP per hour

Service Note:
Will replace the following Sit-820 Nova gas valves:
0820648, 0.820.618

0820616, 0.820.616