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 Synthetic Sapphire/Nylon Sleeve

Nominal Orifice Size

 N/A 52

CV

 N/A 0.0091

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 None

Dimensions

Orifice Diameter

 N/A 0.0205 in

Orifice Diameter Accuracy

 N/A ±0.0003 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: 1.10 5 psig: 2.50 10 psig: 3.32 15 psig: 4.26 20 psig: 5.06 25 psig: 5.81 30 psig: 6.57 40 psig: 8.10 50 psig: 9.63 60 psig: 11.1 70 psig: 12.7 80 psig: 14.3 90 psig: 15.7 100 psig: 17.2

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

 N/A 5 In. Hg.: 1.61 10 In. Hg.: 2.06

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

 N/A 15 In. Hg.: 2.31 20 In. Hg.: 2.31 30 In. Hg.: 2.31

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

 N/A 1 psig: 2.33 5 psig: 5.30 10 psig: 7.03 15 psig: 9.03 20 psig: 10.7 25 psig: 12.3 30 psig: 13.9 40 psig: 17.2 50 psig: 20.4 60 psig: 23.5 70 psig: 26.9 80 psig: 30.3 90 psig: 33.3 100 psig: 36.4

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

 N/A 5 In. Hg.: 3.41 10 In. Hg.: 4.36

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

 N/A 15 In. Hg.: 4.89 20 In. Hg.: 4.89 30 In. Hg.: 4.89