• DOT 406 RELIEF VALVE/10” FILL
• LESS THAN 1 LITER LEAKAGE
• SET PRESSURE ADJUSTMENT
• SECONDARY SAFETY LATCH

Pressure Relief Valve setting 3.63 psig
Rated Pressure Actuated Emergency Venting:
494,084 cu. Ft. free air per hour @ 6.25 psig
Rated Liquid Flow Capacity 1335 gpm @ 5.0 psig

The 10” relief valve provides emergency pressure relief and meets the 1 liter surge leakage limit imposed by DOT 406 Specifications in 49CFR178.345-10(b)(3)(ii).  The relief valve also serves as a 10” latch style fill which can be easily opened to provide access for filling the tank or for inspection. Relief valves contain an adjustment feature to allow for fine-tuning of set pressure in the field. Other standard features include model 6496ALB pressure-vacuum vent mounted in the 10” relief valve cover.