The Model AF Flo Setter II Hose kit is an Externally Adjustable Automatic flow control hose kit. The Flo Setter II Valve is a pressure independent flow control device that maintains constant flow, automatically compensating for fluctuating pressure conditions, AND it can be adjusted to set a specific flow rate, within a range of available flow rates. The GPM dial is unique and easy to set, and requires no instruments, charts or wheels to adjust. The easy to read, gallons per minute scale, on the lockable red handle, ensures that the flow setting is simple and user friendly. The valve includes a shut off ball valve and two pressure/temperature test ports for flow verification and diagnostics.