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 11

CV

 N/A 0.00042

Maximum Operating Pressure

 N/A 100 psig

Connection A

 N/A 1/4" NPT Male

Connection B

 N/A 1/4" NPT Male

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.0043 in

Orifice Diameter Accuracy

 N/A ±0.0003 in

Width Across Flats (Hex)

 N/A 9/16 in

Total Length

 N/A 1.38 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: 0.050 5 psig: 0.108 10 psig: 0.164 15 psig: 0.205 20 psig: 0.243 25 psig: 0.280 30 psig: 0.317 40 psig: 0.390 50 psig: 0.463 60 psig: 0.536 70 psig: 0.609 80 psig: 0.683 90 psig: 0.757 100 psig: 0.830

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

 N/A 5 In. Hg.: 0.073 10 In. Hg.: 0.093

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

 N/A 15 In. Hg.: 0.100 20 In. Hg.: 0.100 30 In. Hg.: 0.100

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

 N/A 1 psig: 0.106 5 psig: 0.228 10 psig: 0.347 15 psig: 0.434 20 psig: 0.515 25 psig: 0.593 30 psig: 0.672 40 psig: 0.826 50 psig: 0.981 60 psig: 1.14 70 psig: 1.29 80 psig: 1.45 90 psig: 1.60 100 psig: 1.76

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

 N/A 5 In. Hg.: 0.154 10 In. Hg.: 0.197

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

 N/A 15 In. Hg.: 0.212 20 In. Hg.: 0.212 30 In. Hg.: 0.212