Control valve assembly for fluid treatment apparatus

A control valve assembly for a fluid treatment system comprising:

• a housing having a top portion and a bottom portion secured to the top portion, the housing including an inlet and an outlet;
• a cylinder formed by at least two adjacent chambers secured in the housing, a first chamber configured to receive, through a lateral aperture in the first chamber, fluid from the inlet and a second chamber configured to provide, through a lateral aperture in the second chamber, fluid to the outlet, wherein the at least two modular chambers engage slots and pins located on adjacent modular chambers to form the cylinder, wherein each modular chamber includes an axial aperture to provide fluid communication with another modular chamber, and wherein each modular chamber is configured to be selectively separated from the cylinder once the cylinder has been secured in the housing;
• a piston comprising a shaft with a plurality of sealing rings, the piston extending through the housing and through the first chamber and the second chamber of the cylinder and being configured to move in a direction along its longitudinal axis to control a flow of fluid in the control valve assembly;
• and,
• a blending valve comprising a channel integrally formed in the top portion of the housing,
• wherein the axial apertures are arranged along the longitudinal axis of the piston, and wherein the lateral apertures define flow paths orthogonal to the longitudinal axis of the piston.

A control valve assembly for a fluid treatment system comprising:

• a housing having a top portion and a bottom portion secured to the top portion and forming a cavity having a first end and a second end and defining an axis extending between the first end and the second end, the housing including an inlet and an outlet;
• a cylinder formed by at least two adjacent chambers in the housing, a first chamber in fluid communication with the inlet through a lateral aperture and a second chamber in fluid communication with the outlet through a lateral aperture, wherein the least two chambers engage slots and pins located on adjacent chambers to form the cylinder, wherein each chamber includes an axial aperture to provide fluid communication with another chamber, and wherein each modular chamber is configured to be selectively separated from the cylinder once the cylinder has been secured in the housing;
• a piston extending through the at least two chambers of the cylinder and configured to be displaced along a longitudinal axis to control a flow of fluid in the control valve assembly through the first chamber and the second chamber;
• a brine valve assembly including a brine piston configured to selectively open and close the brine valve assembly;
• a main piston drive cam is configured to displace the piston;
• and,
• a brine cam is integrally joined to the main piston drive cam,
• wherein the axial apertures are arranged along the longitudinal axis of the piston, and wherein the lateral apertures define flow paths orthogonal to the longitudinal axis of the piston.