CV9 Master Catalog

12 Needle & Flow Control Valves Specifications subject to change without notice or incurring obligation 12.6 2-2-16 CG F E D J .50 1.00 1.75 Max H 7/16 Hex Lock Nut .27 Dia. Clearance for 1/4" Screw A B B A Annular ring Flow Area Hole Tapered Needle Control Bushing “Bubble Tight” Shut-Off Seal Control Bushing Seal Large Orifice Created by Angled “V” Notch FCB-14 FC-14 Super-Vee™ Super-Vee™ Flow Control controls one direction – Free flow return Model FC-18 FC-14 FC-38 FC-12 Port Size, NPT 1/8 1/4 3/8 1/2 C 2.75 2.75 2.75 3.25 D 2.00 2.00 2.00 2.50 E .38 .38 .38 .50 F 1.50 1.50 1.50 1.88 G 1.38 1.38 1.38 2.50 H 1.50 1.50 1.56 2.06 J 1.00 1.00 1.00 .38 Weight, lb. .63 .63 .63 .83 The unique design of the Super-Vee™control results in SUPER adjustability from full flow to bubble tight shut-offwithanorifice that provides precise repetition of selected flow rates. A straight stem with an angled “V” Notch fits snugly into a control bushing. The actual control orifice is one large hole compared to the narrow annular ring (see drawing below) that is the orifice formed by the typical tapered needle in a round hole. When controlling air or liquid at a very low rate witha taperedneedleandhole, theannular ring becomesminuteandwill catchevenvery small dirt particles and create blockage. This changes the orifice size and causes the flow rate to vary. However, the Super-Vee™s large hole orifice will allowmuch larger particles to flow through freely; thus not changing flow rate. Even with this large orifice advantage, we rec - ommend that when you require extremely fine control and exact repetition every cycle, that you incorporate a filter on each side of the Super- Vee™ to assure that no particles can reach the “V” Notch orifice. • Air service to 150 psi • Hydraulic service to 150 psi • No tapered needles • Delrin® control bushing • Repairable • Knurled adjusting knob • Adjustment lock nut • Quality design • Quality construction • Buna-N seals • Operating temperature (0° to + 180°F) • Black anodized aluminum body • Stainless steel stem • Stainless steel spring (“FC-” Models) • Brass cartridge and poppet • Corrosion resistant construction • “Bubble-tight” shut-off Options • Viton seals for media compatibility, Option -V Super-Vee™ concept Superior consistency Super-Vee™ Flow Control Dimensions Typical Needle & Hole Concept Features Air or Hydraulic to 150 psi