Abstract: A mixing module that includes a mixing chamber formed of a cold flow material and placed within a housing which includes a compression device for compressing the cold flow material through which extends a reciprocating rod, preferably in the form of a valve rod relative to one or more chemical ports formed in the mixing chamber to mix or deliver chemicals within a mixing reception recess. The mixing chamber features a locking arrangement between the cold flow material mixing chamber and the housing which acts to prevent movement of the mixing chamber within the housing due to a sticking of the reciprocating rod to the mixing chamber which otherwise produces a position change in the mixing chamber as the compression device is temporarily compressed until the rod be comes unstuck and releases.

Abstract: A hand held dispenser system with associated dispensed material supply assembly as in separate source chemical foam precursor feeding into, for example, streamlined chemical passageways preferably each comprised of, in series, a castellated swivel hose filter, a valve assembly housing, a wing extensions of a manifold, which manifold supports a high efficiency drive system and is supported by a handle that provides for a compact assembly and receives a rugged trigger assembly. The manifold design provides for elongated filter and, temperature controlled cartridge heater insertion. There is further provided in a preferred embodiment a readily releasable electric source feed line plug connection at the butt end of the dispenser. The dispenser is well suited for the dispensing of methane foam as in a product packaging setting.