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 18

CV

 N/A 0.0012

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 0.0071 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: 0.139 5 psig: 0.313 10 psig: 0.430 15 psig: 0.535 20 psig: 0.635 25 psig: 0.733 30 psig: 0.838 40 psig: 1.04 50 psig: 1.24 60 psig: 1.45 70 psig: 1.66 80 psig: 1.86 90 psig: 2.06 100 psig: 2.27

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

 N/A 5 In. Hg.: 0.199 10 In. Hg.: 0.253

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

 N/A 15 In. Hg.: 0.269 20 In. Hg.: 0.269 30 In. Hg.: 0.269

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

 N/A 1 psig: 0.294 5 psig: 0.663 10 psig: 0.911 15 psig: 1.13 20 psig: 1.35 25 psig: 1.55 30 psig: 1.78 40 psig: 2.20 50 psig: 2.63 60 psig: 3.07 70 psig: 3.52 80 psig: 3.94 90 psig: 4.36 100 psig: 4.81

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

 N/A 5 In. Hg.: 0.422 10 In. Hg.: 0.536

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

 N/A 15 In. Hg.: 0.570 20 In. Hg.: 0.570 30 In. Hg.: 0.570