A continuous flow pumping system which provides a continuous flow of materials out of an outlet while eliminating rough stroke shift and boom bounce. The continuous flow pumping system generally includes a container for storing a material to be dispensed such as concrete. Cylinders are fluidly connected to the container such that the materials may be alternatively pulled into the cylinders or pushed out of the cylinders. A diverter valve is connected to the container adjacent the cylinders which includes a valve inlet through which the materials may be pushed to be dispensed and a pair of blocking portions which selectively cover the cylinders and also serve to cut through the materials. By rotating the diverter valve through a plurality of positions while independently controlling the intake and exhaust strokes of the cylinders, a continuous flow of materials may be ensured across all intake/exhaust strokes of the cylinders.

A counterflow guide includes a body with a first end surface, a second end surface positioned opposite the first end surface, and a sidewall connecting the first end surface to the second end surface. The counterflow guide also includes a discharge passage configured to direct a fluid to discharge through the body, from a discharge inlet to a discharge outlet. The discharge inlet is formed in the sidewall and the discharge outlet is formed into the first end surface.

A low-force, non-displacement, micro/miniature valve and/or pump assembly is provided. A tube component having a first side port coupled to an inlet portion and a second side port coupled to an outlet portion can be selectively moved to alternatively couple the side ports to a first or second piston pump chamber. First and second pistons can be actuated after positioning the tube component to either draw in fluid or push out fluid from either the first or second piston pump chambers during each actuation of the pistons. The fluid can be drawn in from a reservoir and can be expelled to a patient for providing a dose of the fluid to the patient.