- Two-step needle provides fine adjustments at low flow with the first three turns of the adjusting knob.
- The next three turns give full-open needle position and conventional throttling control.
- When flow is reversed, the heavy-duty poppet/retainer permits full-flow return capacity.
- Exclusive color-coded reference scale on the adjusting knob greatly simplifies flow setting, resetting, adjusting and return to an original flow.
- A simple set screw locks the valve on any desired setting.