Honeywell Dual Direct Ignition Gas Valve W/ 3/4"X3/4" Step 35" Wc 09" Wc24 Vac Dual Direct Ignition Gas Valve with 3/4" x 3/4" inlet/outlet, step opening and Full Rate: 3.5" wc Step Setting: 0.9" wc pressure regulator setting. Product Specifications BRANDHoneywell INLET SIZE INCHES3/4 OUTLET SIZE INCHES3/4 BTU/HR MIN30000 BTU/HR MAX300000 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 NUMBERVR8305P4279