The vertical adapters are designed to connect any Clack Water Softener that uses the V3191-01 Clack Fitting.
Fittings are a pair (two) and connect to the valve and then the by-pass valve for Clack WS1 valves and other compatible units. Unique 90-degree elbows allow Clack's vertical connection by passing in the straight up and down position.
These are made to be used with the by-pass, not alone, and provide maximum installation flexibility.