Leafield C7 Valve (video here)
SOTAR used the Leafield C7 valves before the D7.
The boots on the C7 & D7 are not interchangeable, meaning you must replace the entire valve.
The Leafield C7 valves are made from ACETAL (POM) plastic providing high strength, chemical, and ozone resistance.
The seal is designed to clean the sealing surf...