Product Description
Part Number: 2120/[vacuum setting]
Material: Aluminum
Size: 2″
Inlet: Male NPT
Discharge: Male NPT
Dixon Bayco 2″ Vacuum Relief Valves
Originally designed for bulk transport trucks, the 2120 vacuum relief valves have a relieving capacity of 280 to 600 SCFM. If a system blockage were to occur, the valves are designed to open to atmosphere to prevent the tank from imploding.
Dixon Vacuum Valve Features
- Relieving capacity varies between 280 SCFM and 600 SCFM depending upon the set level of vacuum.
- Installed bolt seal deters tampering
- Bayloy body eliminates thread galling
- Constructed with Bayloy body and Bronze poppet
Flow Rate vs Vacuum (InHg)

Dixon Vacuum Relief Valve – 2″
We no longer carry this model, but we have other equivalent valves in stock:
| Manufacturer | Dixon Bayco |
|---|





