SFC1200 by Dixon Valve | Flow Control Valve | Series F | 3/4" Female NPT x 3/4" Female NPT | Black Oxide SteelFeatures: 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