OCECO Inc. is a manufacturer of safety equipment for flammable liquid storage and waste gas disposal systems. They offer a complete line of venting and tank fitting equipment, including conservation vents, emergency vents, flame arrestors, hatches manheads, and fire safety valves. OCECO was the first to develop innovative valves like the double disc water draw off valve and pressure balanced membrane seated vent valve to prevent freezing. Their modular vent valves are known for versatility and high performance, making them a leading provider in the market.