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 14

CV

 N/A 0.00071

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 0.0055 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: 0.080 5 psig: 0.192 10 psig: 0.264 15 psig: 0.329 20 psig: 0.390 25 psig: 0.450 30 psig: 0.511 40 psig: 0.632 50 psig: 0.753 60 psig: 0.875 70 psig: 0.996 80 psig: 1.12 90 psig: 1.24 100 psig: 1.36

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

 N/A 5 In. Hg.: 0.116 10 In. Hg.: 0.149

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

 N/A 15 In. Hg.: 0.159 20 In. Hg.: 0.159 30 In. Hg.: 0.159

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

 N/A 1 psig: 0.169 5 psig: 0.407 10 psig: 0.559 15 psig: 0.697 20 psig: 0.826 25 psig: 0.953 30 psig: 1.08 40 psig: 1.34 50 psig: 1.60 60 psig: 1.85 70 psig: 2.11 80 psig: 2.37 90 psig: 2.62 100 psig: 2.88

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

 N/A 5 In. Hg.: 0.246 10 In. Hg.: 0.316

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

 N/A 15 In. Hg.: 0.337 20 In. Hg.: 0.337 30 In. Hg.: 0.337