Hello,
Can anyone explain the basis of the check valve for fuel return line to be as per engine manufacturer requirement instead of being a hard requirement in NFPA 20?
Can anyone explain the basis of the check valve for fuel return line to be as per engine manufacturer requirement instead of being a hard requirement in NFPA 20?
11.4.4.3.1 A check valve, as specified by the engine manufacturer, shall be permitted to be installed in the fuel rentrn line only when required by the engine manufacturer.