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Air operated vapor valves are used to connect tank compartments to the rollover rail vapor recovery system, effectively sealing the tank compartments when transporting, then opening to allow vapor flow during loading and unloading. For peace of mind, consider that Civacon's sequential valve technology integrates with our ROM II Overfill Detection System to safeguard against costly reversed bulkheads and overfills. Then consider that only Civacon offers this complete lineup of 3" and 4" SVV vents.
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