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Where flammable or combustible liquids are supplied to spray nozzles by positive displacement pumps, pump discharge lines shall be provided with an approved relief valve discharging to pump suction or a safe detached location.

Related Code Sections

2403.3.3 Flammable Finishes, Pumped Liquid Supplies
Where flammable or combustible liquids are supplied to spray nozzles by positive displacement pumps, pump discharge lines shall be provided ...
2403.3.3 Flammable Finishes, Pumped Liquid Supplies
Where flammable or combustible liquids are supplied to spray nozzles by positive displacement pumps, pump discharge lines shall be provided ...