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 316 SS

Orifice Material

 N/A Synthetic Sapphire/Nylon Sleeve

Nominal Orifice Size

 N/A 4

CV

 N/A 0.000053

Maximum Operating Pressure

 N/A 100 psig

Connection A

 N/A 1/4" NPT Male

Connection B

 N/A 1/4" OD Tube Compression

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.0016 in

Width Across Flats (Hex)

 N/A 9/16 in

Total Length

 N/A 1.49 in

Width Across Flats (Hex) 2

 N/A 9/16 in

Orifice Diameter Accuracy

 N/A ±0.0003 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: 0.005 5 psig: 0.013 10 psig: 0.016 15 psig: 0.021 20 psig: 0.025 25 psig: 0.030 30 psig: 0.034 40 psig: 0.043 50 psig: 0.052 60 psig: 0.061 70 psig: 0.070 80 psig: 0.080 90 psig: 0.089 100 psig: 0.098

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

 N/A 5 In. Hg.: 0.006 10 In. Hg.: 0.008

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

 N/A 15 In. Hg.: 0.010 20 In. Hg.: 0.010 30 In. Hg.: 0.010

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

 N/A 1 psig: 0.011 5 psig: 0.027 10 psig: 0.034 15 psig: 0.044 20 psig: 0.053 25 psig: 0.064 30 psig: 0.072 40 psig: 0.091 50 psig: 0.110 60 psig: 0.129 70 psig: 0.149 80 psig: 0.168 90 psig: 0.188 100 psig: 0.208

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

 N/A 5 In. Hg.: 0.013 10 In. Hg.: 0.018

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

 N/A 15 In. Hg.: 0.020 20 In. Hg.: 0.020 30 In. Hg.: 0.020