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 22

CV

 N/A 0.0018

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 0.0087 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: 0.194 5 psig: 0.430 10 psig: 0.590 15 psig: 0.755 20 psig: 0.910 25 psig: 1.05 30 psig: 1.19 40 psig: 1.47 50 psig: 1.75 60 psig: 2.03 70 psig: 2.31 80 psig: 2.59 90 psig: 2.87 100 psig: 3.15

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

 N/A 5 In. Hg.: 0.277 10 In. Hg.: 0.352

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

 N/A 15 In. Hg.: 0.390 20 In. Hg.: 0.390 30 In. Hg.: 0.390

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

 N/A 1 psig: 0.411 5 psig: 0.911 10 psig: 1.25 15 psig: 1.60 20 psig: 1.93 25 psig: 2.22 30 psig: 2.52 40 psig: 3.11 50 psig: 3.71 60 psig: 4.30 70 psig: 4.89 80 psig: 5.49 90 psig: 6.08 100 psig: 6.67

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

 N/A 5 In. Hg.: 0.587 10 In. Hg.: 0.746

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

 N/A 15 In. Hg.: 0.826 20 In. Hg.: 0.826 30 In. Hg.: 0.826