Modular pump assembly

摘要

The present invention discloses a modular diaphragm cartridge for use with a pump assembly. A cartridge body defines an interior chamber into which a piston is slidably connected. A spring biases the piston against a diaphragm placed over the end of the cartridge body to enclose the interior chamber. An end cap which threadedly engages the cartridge body to enclose the diaphragm between the end cap and body. The modular diaphragm cartridge may be removed from a pump housing as a single unit without the need for keeping track of multiple pieces. The present invention further discloses a modular inlet valve assembly, outlet valve assembly and plunger seal/guide cartridge.