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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    Precision orifice assemblies that adapt to common fittings used in the process industry. Press-fit inserts are used with standard compression tube fittings to form a precision orifice assembly. The fittings shown here are for 1/4" OD tubing, or 3/16" OD tubing.
Unit of Measure

Specifications

Material

 N/A 316 SS

Nominal Orifice Size

 N/A 32

CV

 N/A 0.024

Maximum Operating Pressure

 N/A 4000 psig

Maximum Pressure Differential

 N/A 200 psid

Connection A

 N/A 3/16" OD Tube Compression

Connection B

 N/A 3/16" OD Tube Compression

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.032 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 1/2 in

Total Length

 N/A 1.47 in

Width Across Flats (Hex) 2

 N/A 7/16 in

Application

N/A

    Compression fittings are used with a metal or rigid plastic tubing. These fittings are used in instrumentation for process control systems. The nature of the connectors allow for easy disassembly and re-assembly without the need for teflon tape or sealants.

Advantages

N/A

  • High Pressure Capability
  • Bi-directional Flow
  • Economical Precision Orifice
  • Repeatable Orifice Size and Shape
  • Predictable Flow Rate

Flow Data

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

 N/A 1 psig: 6.10 5 psig: 13.6 10 psig: 19.9 15 psig: 24.6 20 psig: 28.6 25 psig: 32.6 30 psig: 36.7 40 psig: 44.7 50 psig: 53.0 60 psig: 61.0 70 psig: 69.3 80 psig: 77.8 90 psig: 86.0 100 psig: 94.5

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

 N/A 5 In. Hg.: 8.73 10 In. Hg.: 10.9

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

 N/A 15 In. Hg.: 11.5 20 In. Hg.: 11.5 30 In. Hg.: 11.5

Air Flow at Pressure - Standard Liters Per Minute (SLPM)

 N/A 1 psig (6.9 kPag): 2.88 5 psig (34.5 kPag): 6.42 10 psig (69.0 kPag): 9.40 15 psig (103.4 kPag): 11.6 20 psig (137.9 kPag): 13.5 25 psig (172.4 kPag): 15.4 30 psig (206.9 kPag): 17.3 40 psig (275.8 kPag): 21.1 50 psig (344.8 kPag): 25.0 60 psig (413.7 kPag): 28.8 70 psig (482.7 kPag): 32.7 80 psig (551.6 kPag): 36.7 90 psig (620.6 kPag): 40.6 100 psig (689.5 kPag): 44.6

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

 N/A 5 In. Hg. (127 Mm. Hg.): 4.12 10 In. Hg. (254 Mm. Hg.): 5.16

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

 N/A 15 In. Hg. (381 Mm. Hg.): 5.45 20 In. Hg. (508 Mm. Hg.): 5.45 30 In. Hg. (762 Mm. Hg.): 5.45

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.024 2 psig: 0.034 3 psig: 0.042 4 psig: 0.048 5 psig: 0.054 6 psig: 0.059 7 psig: 0.063 8 psig: 0.068 9 psig: 0.072 10 psig: 0.076 15 psig: 0.093 20 psig: 0.107 30 psig: 0.131 40 psig: 0.152 50 psig: 0.170 60 psig: 0.186 70 psig: 0.201 80 psig: 0.215 90 psig: 0.228 100 psig: 0.240

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.091 2 psig (13.8 kPag): 0.128 3 psig (20.7 kPag): 0.157 4 psig (27.6 kPag): 0.182 5 psig (34.5 kPag): 0.203 6 psig (41.4 kPag): 0.203 7 psig (48.3 kPag): 0.240 8 psig (55.2 kPag): 0.257 9 psig (62.1 kPag): 0.273 10 psig (69 kPag): 0.287 15 psig (103.4 kPag): 0.352 20 psig (137.9 kPag): 0.406 30 psig (206.9 kPag): 0.498 40 psig (275.8 kPag): 0.575 50 psig (344.8 kPag): 0.642 60 psig (413.7 kPag): 0.704 70 psig (482.7 kPag): 0.760 80 psig (551.6 kPag): 0.813 90 psig (620.6 kPag): 0.862 100 psig (689.5 kPag): 0.908

Flow Data Status

 N/A Generic