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 303 SS

Orifice Material

 N/A Sapphire/Nylon Sleeve

Nominal Orifice Size

 N/A 64

CV

 N/A 0.013

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 Screened

Dimensions

Orifice Diameter

 N/A 0.0252 in

Orifice Diameter Accuracy

 N/A ±0.0005 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: 1.69 5 psig: 4.06 10 psig: 5.58 15 psig: 7.08 20 psig: 8.33 25 psig: 9.55 30 psig: 10.7 40 psig: 13.1 50 psig: 15.5 60 psig: 17.9 70 psig: 20.2 80 psig: 22.6 90 psig: 24.9 100 psig: 27.3

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

 N/A 5 In. Hg.: 2.61 10 In. Hg.: 3.19

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

 N/A 15 In. Hg.: 3.48 20 In. Hg.: 3.48 30 In. Hg.: 3.48

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

 N/A 1 psig: 3.58 5 psig: 8.60 10 psig: 11.8 15 psig: 15.0 20 psig: 17.6 25 psig: 20.2 30 psig: 22.7 40 psig: 27.8 50 psig: 32.8 60 psig: 37.9 70 psig: 42.8 80 psig: 47.9 90 psig: 52.8 100 psig: 57.8

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

 N/A 5 In. Hg.: 5.53 10 In. Hg.: 6.76

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

 N/A 15 In. Hg.: 7.37 20 In. Hg.: 7.37 30 In. Hg.: 7.37