ASCO is the worldwide leader in the design and manufacture of quality solenoid valves.  ASCO products are designed to control the flow of air, gas, water, oil, steam. Please let us address your applications.

(877)-274-2763 toll free - 24 Hours a Day asco home products about us contact us links safety Adjustable Flow Control Valves Brass Body - ¼" to ¾" N.P.T. Accessories General Description ASCO's patented adjustable flow control design has greater flow capacity than most conventional constructions where a separate adjustment speed control and ball check for free flow are utilized. A spring loaded disc allows free flow in one direction and an adjustable or controlled flow in the opposite direction. Flow adjustment is performed by a tapered brass stem that controls the flow through the cross hole in the disc. The adjustable knob contains a unique locking device that consists of a plastic metering knob and thumb latch pawl. The valve bonnet is scribed with graduations to serve as a position indicator for the stem. Specifications Operation: When the pawl is in the up position, it creates a friction lock on the knurled bonnet and the knob cannot rotate. When the pawl is at 90° to the knob, the knob is free to rotate. Valve Parts in Contact with Fluids: Body and Stem -- Brass Seals -- Buna "N" Disc -- Acetal Spring -- 302 s.s. Retainer -- 17-7PH s.s. Nominal Ambient Temperature: 125°F Maximum. Important: Valves may be mounted in any position. Pipe Size (ins.) Orifice Size (ins.) CV Flow Factor ¹ Operating Pressure (psi) Maximum Operating Pressure Differential (psi) Max. Fluid Temp. °F Catalog Number Meter Free Air-Inert Gas, Water and Light Oil ¼ ³/8 .22 1.2 1 300 180 V022A1 ³/8 ³/8 .90 1.4 1 300 180 V0222 ½ 7/16 1.2 2.6 1 300 180 V0223 ¾ 17/32 1.6 4.0 2.5 300 180 V0224 NOTE: 1 -- Refer to Chart A for Cv vs. Metering Stem Turns. Chart A Flow Characteristics for ASCO Flow Control Valves Metering Stem Turns Free Flow Data Pipe Size Cv ¼ 1.2 ³/8 1.4 ½ 2.6 ¾ 4.0 Example I: A ½" N.P.T. flow control valve is required to pass 3 GPM of water at a p of 16 psi. Determine the position of the metering stem. Cv = GPM   Cv = 3   =.75 From the graph for the ½" N.P.T. flow control valve with a Cv of .75 the stem should be positioned three turns out from fully closed. Example II: To determine the flow using the same data of 16 psi, and METERED Cv fo .75, the solution will be: GPM = Cv = .75 = 3 Example III: The flow through this valve in the FREE FLOW position is: GPM = Cv* = 2.6 = 10.4 *Cv is obtained from the free flow data table. P1 -- Inlet Pressure (PSIA) P2 -- Outlet Pressue (PSIA) p -- Pressure Drop (P1 - P2) psi G -- Specific Gravit of Gas @ 14.7 PSIA and 60°F T -- Absolute Temperature of Flowing Medium (°F + 460) Sizing Equations Water Cv = GPM GPM = Cv Air Cv = SCFH 960 SCFH = Cv 960 Credit Cards Accepted by PSI .

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