Honeywell Dual Direct Ignition Gas Valve W/ 1/2"X1/2" Step 35" Wc 12" Wc24 Vac Dual Direct Ignition Gas Valve with 1/2" x 1/2" inlet/outlet, step opening and Full Rate: 3.5" wc Step Setting: 1.2" wc pressure regulator setting. Product Specifications BRANDHoneywell INLET SIZE INCHES1/2 OUTLET SIZE INCHES1/2 MAX OPERATING PRESSURE (PSI)1/2 FUEL TYPENatural Gas OPENING TYPEStep DESCRIPTIONDual Direct Ignition Gas Valve IGNITION TYPEDirect Ignition TYPEStraight-Through LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERVR8205C1024