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

 N/A Brass

Orifice Material

 N/A Sapphire/Nylon Sleeve

Nominal Orifice Size

 N/A 28

CV

 N/A 0.0028

Maximum Operating Pressure

 N/A 100 psig

Connection A

 N/A 1/8" NPT Male

Connection B

 N/A 1/8" NPT Male

Screened

 N/A Screened

Dimensions

Orifice Diameter

 N/A 0.011 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 7/16 in

Total Length

 N/A 0.970 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

 N/A 1 psig: 0.300 5 psig: 0.695 10 psig: 0.968 15 psig: 1.24 20 psig: 1.48 25 psig: 1.70 30 psig: 1.91 40 psig: 2.35 50 psig: 2.78 60 psig: 3.20 70 psig: 3.62 80 psig: 4.04 90 psig: 4.47 100 psig: 4.89

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

 N/A 5 In. Hg.: 0.451 10 In. Hg.: 0.556

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

 N/A 15 In. Hg.: 0.626 20 In. Hg.: 0.626 30 In. Hg.: 0.626

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

 N/A 1 psig: 0.636 5 psig: 1.47 10 psig: 2.05 15 psig: 2.63 20 psig: 3.14 25 psig: 3.60 30 psig: 4.05 40 psig: 4.98 50 psig: 5.89 60 psig: 6.78 70 psig: 7.67 80 psig: 8.56 90 psig: 9.47 100 psig: 10.4

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

 N/A 5 In. Hg.: 0.956 10 In. Hg.: 1.18

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

 N/A 15 In. Hg.: 1.33 20 In. Hg.: 1.33 30 In. Hg.: 1.33