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Various regulatory agencies require that slotted gauge poles be equipped with emission control devices. Improperly sealed gauge pole wells can account for as much as 25 times the emissions of an entire seal system. The HMT Gauge Pole Sleeve effectively separates the vapor space in the gauge pole well from the gauge pole interior, preventing these vapors from escaping up the gauge pole. Additionally, the liquid surface area within the gauge pole itself is displaced by the Gauge Pole Float. The combined system effectively reduces a large evaporative surface area (and potential source of emissions) down to a few square inches around the float.
Some jurisdictions may require the use of both the sleeve and float. If a float is used, the HMT Gauge Pole Float Basin should be considered as part of a complete solution to make the gauging process simpler, cleaner, and more efficient. For a complete guide pole emissions control system that is maintenance free with a long service life, choose the HMT Gauge Pole Float and Sleeve.