A manifold arrangement for operably connecting to a plurality of filters; the manifold arrangement comprising: (a)a first pipe having a first pipe outer wall surrounding a first open interior volume; (i) the first pipe having a blank flange in the first interior volume separating the first pipe into an inlet section and an outlet section; (ii) the first pipe outer wall having an inlet aperture arrangement in the inlet section; (iii) the first pipe outer wall having a plurality of outlet apertures in the outlet section; (b)a second pipe having a second pipe outer wall surrounding a second pipe interior volume; (i) the first pipe being operably positioned within the second pipe interior volume; (ii) the second pipe outer wall having a plurality of filter engaging apertures; and (c) a plurality of spigots; (i) each of the plurality of spigots being connected to a respective one of the outlet apertures in the outlet section of the first pipe outer wall; and (ii) each of the plurality of spigots being in communication with a respective one of the filter engaging apertures of the second pipe outer wall; and wherein the first pipe has opposite first and second ends (30, 31), and the second pipe is between and spaced from the first and second ends (30, 31) of the first pipe. (a)a first pipe having a first pipe outer wall surrounding a first open interior volume; (i) the first pipe having a blank flange in the first interior volume separating the first pipe into an inlet section and an outlet section; (ii) the first pipe outer wall having an inlet aperture arrangement in the inlet section; (iii) the first pipe outer wall having a plurality of outlet apertures in the outlet section; (i) the first pipe having a blank flange in the first interior volume separating the first pipe into an inlet section and an outlet section; (ii) the first pipe outer wall having an inlet aperture arrangement in the inlet section; (iii) the first pipe outer wall having a plurality of outlet apertures in the outlet section; (b)a second pipe having a second pipe outer wall surrounding a second pipe interior volume; (i) the first pipe being operably positioned within the second pipe interior volume; (ii) the second pipe outer wall having a plurality of filter engaging apertures; and (i) the first pipe being operably positioned within the second pipe interior volume; (ii) the second pipe outer wall having a plurality of filter engaging apertures; and (c) a plurality of spigots; (i) each of the plurality of spigots being connected to a respective one of the outlet apertures in the outlet section of the first pipe outer wall; and (ii) each of the plurality of spigots being in communication with a respective one of the filter engaging apertures of the second pipe outer wall; and wherein the first pipe has opposite first and second ends (30, 31), and the second pipe is between and spaced from the first and second ends (30, 31) of the first pipe. (i) each of the plurality of spigots being connected to a respective one of the outlet apertures in the outlet section of the first pipe outer wall; and (ii) each of the plurality of spigots being in communication with a respective one of the filter engaging apertures of the second pipe outer wall; and