O’Keefe Controls Co.
O’Keefe Controls Co.
4 Maple Drive
Monroe, CT 06468
Phone: 203.261.6711
Email: info@okeefecontrols.com • Website: www.okeefecontrols.com
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    The restrictors incorporate a precision synthetic sapphire orifice which is fitted within a main body. The sapphire orifice is a stable, accurate flow restrictor. Standard sizes range from .0012" to .0252" orifice diameter in 32 increments.
Unit of Measure

Specifications

Material

 Nylon

Nominal Orifice Size

 20

CV

 0.0088

Orifice Material

 Synthetic Sapphire

Maximum Operating Pressure Gauge

 100 psig

Connection A

 .128" Press-Fit Insert

Screened

 None

Dimensions

Orifice Diameter

 0.0079 in0.2 mm

Total Length

 0.306 in

Maximum Outside Diameter

 0.129 in

Minimum Outside Diameter

 0.128 in

Orifice Diameter Accuracy

 ±0.0003 in

Press Fit into Bore

 0.125 to 0.126 in

Application

N/A

  • Precision Flow Control - Gases or Liquids
  • Accurate Timing in Pneumatic or Hydraulic Circuits
  • Pressure Dividing Circuits and Pneumatic Resistance Bridges
  • Impedance Matching
  • Uni-directional Flow

Flow Data

Air Flow at Pressure - Standard Liters Per Minute (SLPM)_Sapphire

 1 psig: 0.161 5 psig: 0.350 10 psig: 0.480 15 psig: 0.613 20 psig: 0.730 25 psig: 0.843 30 psig: 0.958 40 psig: 1.18 50 psig: 1.41 60 psig: 1.64 70 psig: 1.87 80 psig: 2.09 90 psig: 2.32 100 psig: 2.55

Air Flow at Vacuum - Standard Liters Per Minute (SLPM)_Sapphire

 5 In. Hg.: 0.229 10 In. Hg.: 0.292

Air Flow at Vacuum, Choked Flow - Standard Liters Per Minute (SLPM)_Sapphire

 15 In. Hg.: 0.320 20 In. Hg.: 0.320 30 In. Hg.: 0.320

Air Flow at Pressure - Standard Cu. Ft. Per Hour (SCFH)_Sapphire

 1 psig: 0.341 5 psig: 0.740 10 psig: 1.02 15 psig: 1.30 20 psig: 1.55 25 psig: 1.79 30 psig: 2.03 40 psig: 2.50 50 psig: 2.99 60 psig: 3.47 70 psig: 3.96 80 psig: 4.43 90 psig: 4.92 100 psig: 5.40

Air Flow at Vacuum - Standard Cu. Ft. Per Hour (SCFH)_Sapphire

 5 In. Hg.: 0.485 10 In. Hg.: 0.619

Air Flow at Vacuum, Choked Flow - Standard Cu. Ft. Per Hour (SCFH)_Sapphire

 15 In. Hg.: 0.678 20 In. Hg.: 0.678 30 In. Hg.: 0.678