to 50 39 except that it leads off to the left as shown in phantom lines in the view of fig3 by mounting valves 30 and 32 on both sides of the support member block 36 39 a large number of the valves may be accomodated to correspond to each of the spray nozzles 22 extending across the width of the travelling carpet web thus if the center to center distance of nozzles 22 were reduced to 1 4 inch block 36 39 would readily support the additionally required valves a slight modification of the support member block 36 39 may be seen in fig4 which shows a support member block 56 34 wherein the gas valves 30 and corresponding dye valves 32 are staggered to accommodate more valves in a given amount of space in this case the control fluid passages 50 34 may lead vertically down to a particular dye valve 32 and then slant to supply control fluid to the corresponding gas valve 30 for simplicity 39 s sake the valves 30 and valves 32 are shown in schematic form only similarly only the control fluid passages 50 34 associated with valves on the back i e the view of fig4 are shown it being readily understood that similar control fluid passages 50 34 would be used for valves 30 and 32 mounted to the front of.