REGO 7573 Series and 3183AC Double Check Vapor Equalizing Valves for ASME and DOT Containers
Lataa PDF
Other designations: double check vapor equalizing valve
Equalizing valves are used, for example, when filling tanks. They equalize the pressure between two tanks when liquefied gas is transferred from one tank to another. When refueling a tanker, the vapor phase moves back to the storage tank.
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REGO 7573 Series and 3183AC Double Check Vapor Equalizing Valves for ASME and DOT Containers
Lataa PDF