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 10

CV

 N/A 0.00035

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 0.0039 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: 0.040 5 psig: 0.093 10 psig: 0.132 15 psig: 0.166 20 psig: 0.197 25 psig: 0.229 30 psig: 0.260 40 psig: 0.321 50 psig: 0.383 60 psig: 0.445 70 psig: 0.507 80 psig: 0.569 90 psig: 0.632 100 psig: 0.692

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

 N/A 5 In. Hg.: 0.057 10 In. Hg.: 0.073

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

 N/A 15 In. Hg.: 0.079 20 In. Hg.: 0.079 30 In. Hg.: 0.079

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

 N/A 1 psig: 0.085 5 psig: 0.197 10 psig: 0.280 15 psig: 0.352 20 psig: 0.417 25 psig: 0.485 30 psig: 0.551 40 psig: 0.680 50 psig: 0.811 60 psig: 0.943 70 psig: 1.07 80 psig: 1.21 90 psig: 1.34 100 psig: 1.47

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

 N/A 5 In. Hg.: 0.121 10 In. Hg.: 0.155

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

 N/A 15 In. Hg.: 0.168 20 In. Hg.: 0.168 30 In. Hg.: 0.168