Also available in steel

• Provide precision flow control and full shutoff in one flow direction and automatically allow unrestricted free flow in the opposite direction
• 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.