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

Orifice Material

 Sapphire/Nylon Sleeve

Material

 Brass

Nominal Orifice Size

 40

CV

 0.0057

Maximum Operating Pressure

 100 psig

Connection A

 1/8" NPT Male

Connection B

 1/16" ID Barb

Screened

 Screened

Dimensions

Orifice Diameter

 0.0157 in

Orifice Diameter Accuracy

 ±0.0003 in

Width Across Flats (Hex)

 7/16 in

Total Length

 0.875 in

Application

Application
  • 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

 1 psig: 0.677 5 psig: 1.51 10 psig: 2.01 15 psig: 2.56 20 psig: 3.04 25 psig: 3.50 30 psig: 3.96 40 psig: 4.89 50 psig: 5.83 60 psig: 6.77 70 psig: 7.71 80 psig: 8.65 90 psig: 9.60 100 psig: 10.6

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

 5 In. Hg.: 0.982 10 In. Hg.: 1.26

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

 15 In. Hg.: 1.39 20 In. Hg.: 1.39 30 In. Hg.: 1.39

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

 1 psig: 1.43 5 psig: 3.20 10 psig: 4.26 15 psig: 5.42 20 psig: 6.44 25 psig: 7.42 30 psig: 8.39 40 psig: 10.4 50 psig: 12.4 60 psig: 14.3 70 psig: 16.3 80 psig: 18.3 90 psig: 20.3 100 psig: 22.5

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

 5 In. Hg.: 2.08 10 In. Hg.: 2.67

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

 15 In. Hg.: 2.95 20 In. Hg.: 2.95 30 In. Hg.: 2.95