Saddle Clamp on 2 Inch With 1 Inch Socket Schedule 80 SR filter internal diameter_1 1 2 inches The Commercial IntelliChem Water Chemistry The Commercial IntelliChem Water Chemistry Controller continuously monitors your pH and chemical levels and automatically delivers just the required amount of chemicals to keep pools clearer and always ready to enjoy Customers love the simplicity of this external locking pole and its heavy wall tubing These versatile saddle units can be used in either temporary or permanent installations on all types of pipe with IPS (Iron Pipe Size) easy and reliable addition of branch lines to existing piping system lines