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 304 SS

CV

 N/A 0.00009

Orifice Material

 N/A Sapphire/Nylon Sleeve

Nominal Orifice Size

 N/A 5

Maximum Operating Pressure

 N/A 100 psig

Connection A

 N/A 1/4" NPT Male

Connection B

 N/A SAE 37 DEG #4 7/16"-20 Male

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.002 in

Width Across Flats (Hex)

 N/A 9/16 in

Total Length

 N/A 1.42 in

Orifice Diameter Accuracy

 N/A ±0.0003 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: 0.010 5 psig: 0.027 10 psig: 0.036 15 psig: 0.046 20 psig: 0.055 25 psig: 0.063 30 psig: 0.072 40 psig: 0.089 50 psig: 0.106 60 psig: 0.123 70 psig: 0.141 80 psig: 0.158 90 psig: 0.175 100 psig: 0.193

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

 N/A 5 In. Hg.: 0.014 10 In. Hg.: 0.018

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

 N/A 15 In. Hg.: 0.021 20 In. Hg.: 0.021 30 In. Hg.: 0.021

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

 N/A 1 psig: 0.021 5 psig: 0.056 10 psig: 0.076 15 psig: 0.097 20 psig: 0.117 25 psig: 0.133 30 psig: 0.152 40 psig: 0.189 50 psig: 0.225 60 psig: 0.261 70 psig: 0.299 80 psig: 0.335 90 psig: 0.371 100 psig: 0.409

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

 N/A 5 In. Hg.: 0.029 10 In. Hg.: 0.039

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

 N/A 15 In. Hg.: 0.045 20 In. Hg.: 0.045 30 In. Hg.: 0.045