Griswold - Model F-5516 - Irrigation High Limit Constant Flow Valves - Brochure

Griswold Controls’ Irrigation High Limit Constant Flow Valves limit the flowrate (gallons per minute) to your exact need. Today a maintenance person can change the flow on an irrigation zone by easily adjusting the valve with the handle, increasing or decreasing that particular zone. This is a problem because the system is designed for a certain flow rate and by adjusting the valve you now are changin g the performance of that particular zone. Limiting the flowrate to design flow gives the designer and property manager the confidence that their system is performing to their criteria.