It can be configured for pump-up or pump-down control when used in conjunction with a normally closed pneumatic float valve (pump down) or a normally open pneumatic float valve (pump up). OKC-2292 Narrow Band Level Control: This panel controls a liquid level within the deadband of a single pneumatic float valve. A local indicator provides status of the output pneumatic signal.ģ. The pneumatic output is active when the liquid level exceeds the high level sensor. It uses a normally closed float valve (OKC-1536-2 or OKC-1570-2) to detect the high liquid level point and a normally open float valve (OKC-2250-2) to detect the low liquid level point. OKC-3171 Wide Band Level Control “Pump Down”: This panel provides a pneumatic signal to control a drain valve or air operated pump to maintain a liquid level between two sensing points. A local indicator provides status of the output pneumatic signal.Ģ. The pneumatic output is active when the liquid level falls below the low level sensor. OKC-2291 Wide Band Level Control “Pump Up”: This panel provides a pneumatic signal to control a fill valve or air operated pump to maintain a liquid level between two sensing points. And with valve actuation occurring only when the sensor is triggered, the energy cost of operation is reduced, making them a desirable choice for general industrial manufacturing.ġ. Pneumatic Float Valves can be found in industrial settings where risk of explosion is a consideration, such as in alcohol fermentation and distillation. Ideal for use in air conditioning, refrigeration, and irrigation systems. In fact, this construction makes them compatible with a broad range of liquids including water, wastewater, oils, alcohol, paints and solvents, and more.ĭue to their non-electrical pneumatic operation, O’Keefe Controls Co. Our Float Valves are heavy duty mechanical valves for commercial, industrial, and agricultural applications for controlling high capacity water flow. Pneumatic Float Valves are suitable for commercial use in a variety of industries, including Food & Beverage. With all wetted parts being constructed of stainless steel, O’Keefe Controls Co. They can be utilized in level sensing applications with liquid temperatures up to 180° F and liquid pressures up to 200 psig, while their non-electric output valve can handle pressures from 30-85 psig and ambient temperatures up to 120° F. Available in side-mounting or top mounting configurations, they also work for both vented and non-vented conditions.
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