Double check vapor equalizing valves ensure safe and efficient vapor transfer in LPG and NH3 systems, preventing backflow and maintaining pressure balance.
Designed to facilitate loading operations by providing equalization of pressures in the supply and storage containers. The supplementary excess flow valve closes when the flow from the container being filled exceeds a predetermined rate.
The 7573 Series is designed for use in bulk delivery systems and motor fuel containers. The 3183AC is designed for use in delivery trucks and other large containers.
| SKU | Wrench Hex Flats | Hose Connection (in.) | Product Name | Tank Connection (in.) | Approx Closing Flow at 100 PSIG Inlet Pressure | Part Number Basic |
|---|---|---|---|---|---|---|
| 7573DC | 1 3/8” | 1 1/4” M. ACME | Double Check Vapor Equalizing Valves for ASME and DOT Containers | 3/4” M. NPT | 4100 SCFH | 7573DC |
| 7573D | 1 3/8” | 1 1/4” M. ACME | Double Check Vapor Equalizing Valves for ASME and DOT Containers | 3/4” M. NPT | 4100 SCFH | 7573D |