Select your options below…

{{ option.description }}
"{{ option.noLongerAvailable }}" is no longer a valid option. Please choose from the current set of options.
Need help? Call one of our pump experts at 1-802-255-4003. We’re open 8:00 am to 5:00 pm .
Starting Price: $582.00
Selected Options: + ${{ calcAdditionalCost | formatCurrency }}
${{ calcCost | formatCurrency }}
Configured Part Number: {{ calcPartNumber }}
Alternate Part Numbers: {{pn}}
{{ calcAvailability }}


The Neptune Back Pressure Valve maintains a set pressure at the pump outlet port (discharge) to assure accurate metering, and can also be used to prevent siphoning. A major benefit is assuring proper metering check valve performance when the system pressure is lower than the injecting fluid pressure. 

The Back Pressure Valve is a required accessory when pumping to a low-pressure injection point below the tank level or when pumping from a bulk tank with a high head pressure. 

Relief valves protect the piping and system from overpressure. Discharge is piped to an external tank.