A valve sub-base (100) is provided. The valve sub-base (100) includes a coupling system (200). The valve sub-base (100) includes a female coupling member (106a) formed on a first side (151) of the valve sub-base (100). The valve sub-base (100) also includes a male coupling member (106b) formed on a second side (152) of the valve sub-base (100) and configured to engage a corresponding female coupling member (106a) on an adjoining valve sub-base (100) to couple two or more valve sub-bases (100).
