What It Does
0820652 is a SIT 820 NOVA millivolt natural gas remote‑ready gas valve with manual HI/LO flame adjustment. It is a split‑system millivolt control valve used on direct‑vent fireplaces, stoves, and gas log sets that operate on natural gas. The valve can be controlled with a millivolt wall switch or compatible remote system and is a direct‑fit replacement for earlier SIT 820 NOVA models. Specifications include 3/8 inch NPT inlet and outlet, a 3.5 inch w.c. natural gas pressure setting, minimum 145 mV requirement, coil resistance of 2.25 ± 0.5 ohms, and an operating temperature range of 32 to 175 degrees Fahrenheit. Maximum regulation capacity is 100,000 BTU per hour at a 1 inch w.c. pressure drop. This valve replaces SIT models 0820634, 0820654, 0820635, 0820655, 0820706, and 0820952. The item is non‑returnable once the tamper‑evident packaging is opened.