Honeywell-s VR8304M4036 3/4 X 3/4 24V SPARK VALVE is a spark valve. Spark valves are used for low to medium pressure applications. This Honeywell valve has two nominal classes: Class 4000 at 40,000 psi and Class 5000 at 70,000 psi. This VR8304M4036 3/4 X 3/4 24V SPARK VALVE (24 VAC) only weighs one pounds.