Burnham 81660278 Gas Valve for RV3-RV7 Series Boilers

The Burnham 81660278 is a replacement gas valve designed specifically for RV3 through RV7 series residential boilers. This genuine OEM part uses the Honeywell SV9602P4816 SmartValve control system, which combines gas flow control and electronic intermittent hot surface pilot ignition sequencing functions into a single integrated unit.

Key Features:

• 3/4-inch NPT inlet and outlet connections with included 1/2-inch NPT reducer bushings
• Step-opening design with 0.7-inch water column step setting and 3.5-inch water column full rate pressure regulation
• 24 VAC control voltage for reliable operation
• Natural gas configuration with two-rod flame sensing
• 30-second pre-purge safety cycle
• Manual shutoff for maintenance and emergency situations

This gas valve replaces Burnham part number 81660213 and several obsolete Honeywell SV9500P and SV9501P series valves. The SmartValve system provides precise gas flow control with adjustable pressure regulation to ensure optimal combustion efficiency and safe operation. Compatible with Q3450 and Q3480 intermittent pilot burners.