CR-21 Landscapes and Irrigation Practice Test 2026 - Free Landscapes and Irrigation Practice Questions and Study Guide

When you need to regulate how much water moves into a branch when the main and lateral lines run at the same depth, you use a valve that can throttle flow. The globe valve is designed for this kind of precise flow control. Its design lets you smoothly adjust the opening to dial in the desired flow rate, and it also shuts off well when needed. That makes it the typical choice for regulating flow on a lateral branch without relying on just on/off action.

Other options don’t fit as well. An angle valve mainly changes the direction of flow rather than providing fine throttling. A controller is an automation device that schedules irrigation, not the hydraulic component that throttles flow. The term “overly high pressure” isn’t a valve at all.

So the component used to control flow in this setup is the globe valve (often misspelled as “glove valve” in some texts).