Supervent Top Air Vent, 1/2", Includes Check Valve

Intermittent Pilot, Standard Opening, 1/2" X 1/2", 3.5" W.C. Setting, Continuous Retry

Direct Ignition Smartvalve. Slow Opening. 1/2" X 1/2", 3.5" Wc Setting. 15 Sec Prepurge. 9 Sec Ignition Trial. Includes Conversion Kit

Direct Ignition Smartvalve. Standard Opening. 1/2" X 1/2", 3.5" Wc Setting. 15 Sec Prepurge. 7 Sec Ignition Trial. Includes Conversion Kit

Intermittent Pilot with Comb Air Control. 2 Stage. 1/2" X 1/2". 3.2" W.C. Setting - High 1.7" W.C. Setting - Low. 90 Sec. Trial, 15 Sec Prepurge, 30 Sec. Post Purge. Includes Conversion Kit

Intermittent Pilot, Standard Opening, 3/4" X 3/4", 3.5" W.C. Setting, Continuous Retry. No Prepurge. Includes Conversion Kit, Two 3/4" X 1/2" Reducer Bushings