K-Rain Product Catalog - 2025

Our story begins with a rocket scientist. A real rocket scientist. With a background in chemical engineering and a stint in the Army Artillery Corps Guided Missile School, Carl Kah Jr. helped develop early reusable rocket technology at Pratt & Whitney. That’s NASA rocket technology (still in use today mind you). With a natural born instinct for invention, Carl turned his attention to his own landscape irrigation system and thought, I can make it better. Call it: When science meets grass roots greatness. From the lathe in his garage, he designed and machined a valve that cycled zone-to-zone and eliminated the need for multiple valves. That creative inventiveness, or inventive creativity, led to patent number one in 1966.