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 9

CV

 N/A 0.00028

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 0.0035 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: 0.034 5 psig: 0.076 10 psig: 0.107 15 psig: 0.134 20 psig: 0.159 25 psig: 0.184 30 psig: 0.208 40 psig: 0.257 50 psig: 0.306 60 psig: 0.356 70 psig: 0.403 80 psig: 0.453 90 psig: 0.502 100 psig: 0.551

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

 N/A 5 In. Hg.: 0.047 10 In. Hg.: 0.061

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

 N/A 15 In. Hg.: 0.065 20 In. Hg.: 0.065 30 In. Hg.: 0.065

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

 N/A 1 psig: 0.072 5 psig: 0.161 10 psig: 0.227 15 psig: 0.284 20 psig: 0.337 25 psig: 0.390 30 psig: 0.441 40 psig: 0.544 50 psig: 0.648 60 psig: 0.754 70 psig: 0.854 80 psig: 0.960 90 psig: 1.06 100 psig: 1.17

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

 N/A 5 In. Hg.: 0.100 10 In. Hg.: 0.128

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

 N/A 15 In. Hg.: 0.138 20 In. Hg.: 0.138 30 In. Hg.: 0.138