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
Print Back
    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 0.004

Orifice Material

 N/A Sapphire/Nylon Sleeve

Nominal Orifice Size

 N/A 34

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 0.0134 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: 0.446 5 psig: 1.06 10 psig: 1.45 15 psig: 1.85 20 psig: 2.20 25 psig: 2.52 30 psig: 2.84 40 psig: 3.46 50 psig: 4.08 60 psig: 4.69 70 psig: 5.31 80 psig: 5.93 90 psig: 6.56 100 psig: 7.18

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

 N/A 5 In. Hg.: 0.673 10 In. Hg.: 0.833

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

 N/A 15 In. Hg.: 0.921 20 In. Hg.: 0.921 30 In. Hg.: 0.921

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

 N/A 1 psig: 0.945 5 psig: 2.25 10 psig: 3.07 15 psig: 3.92 20 psig: 4.66 25 psig: 5.34 30 psig: 6.02 40 psig: 7.33 50 psig: 8.64 60 psig: 9.94 70 psig: 11.3 80 psig: 12.6 90 psig: 13.9 100 psig: 15.2

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

 N/A 5 In. Hg.: 1.43 10 In. Hg.: 1.76

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

 N/A 15 In. Hg.: 1.95 20 In. Hg.: 1.95 30 In. Hg.: 1.95