each end plate and are used to direct control air to the adjacent manifold segment as will be described below each end plate 30 32 also includes a plurality of threaded fastener holes 110 and counterbored fastener receiving holes 112 fasteners 114 are used to secure the respective end plate 30 32 to the adjacent manifold segment 14 fig1 process air is supplied into either of the end plates 30 32 through a bore 120 or 122 the other bore is plugged the bores 120 122 lead to a process air slot 124 as shown on inner face 32 a of plate 32 although not shown plate 30 has the same slot on its inner face process air therefore supplied to slot 124 and this slot 124 communicates with a series of radially spaced bores 126 in each manifold segment 14 surrounding the process air heating rod 60 a fig1 each slot 126 redirects air in a serpentine fashion through the bores 126 such that it is uniformly heated as it traverses back and forth along the length of the connected manifold segments 14 and heater rod 60 a another slot 128 also directs the process air in this serpentine fashion the final bore 126 in the serpentine air flow path communicates with a slot 130 which leads to an air supply passage 132 the air supply passage 132 extends through each of the connected manifold segments 14 and a perpendicular bore 136 in each manifold segment 14 communicates with the corresponding module 16 to provide the process air to the nozzle region 16 a a liquid material input passage 140 communicates with the liquid supply passage of filter block 40 and with.