Patent ID: 8875950

Claim:
A fluid mixing module, comprising: a housing; a mixing chamber formed of a cold flow material and having at least one fluid inlet port and a rod passageway; a rod received within said mixing chamber; and a compression device positioned within said housing and in a compressive relationship with said mixing chamber, wherein said mixing chamber and said housing have a male/female locking relationship that generates a movement-suppressing pressing-force between male and female members of the male/female locking relationship, at least during a valving rod retraction operation in the presence of a rod-stick relationship, that prevents a rearward movement of said mixing chamber relative to said housing during retraction of the rod from a more forward position in said mixing chamber to a more rearward position, said housing has open front and rear ends and said mixing module further comprises front and rear closure caps releasably secured to said housing, and the compressive relationship of said compression device with said mixing chamber biases said mixing chamber toward said front end.