Precision Fine Tune Control Valve - Flow Curves

Overview
How It Works
Specifications
Flow Curves

More Turns =
More Fine Tuning Control

As shown in these charts, a standard gate valve (blue curve) goes from fully closed to near maximum flow with only 3-4 turns of the handle, making it difficult to set the gas flow with any degree of accuracy.

QED’s Precision Fine Tune Control Valve (red curve) takes 9+ turns to go from fully closed to near maximum flow, making flow adjustment far more linear. Because QED's valve requires more turns to achieve a given flow rate change, it allows the operator to make more precise adjustments. This is especially true at lower flow rates.

pdf Download the Precision Fine Tune Control Valve data sheet (2.92 Mb)

2in.QED Control Valve and 2in. Spears Gate Valve@40 H2O

3in.QED Control Valve (Low flow) and 3in. Spears Gate Valve @40 H2O

2in.QED Control Valve Flow Test

2in.Spears Gate Valve Flow Test

3in QED Control Valve with/without Low Flow plug @40 H2O

3in QED Control Valve Flow Rate Test