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 63

CV

 N/A 0.088

Maximum Operating Pressure

 N/A 4000 psig

Maximum Pressure Differential

 N/A 1000 psig

Connection A

 N/A 1/4" OD Tube Compression

Connection B

 N/A 1/4" OD Tube

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.063 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Outside Diameter

 N/A 0.37 in

Shank Length

 N/A 0.74 in

Total Length

 N/A 0.970 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: 25.9 5 psig: 55.3 10 psig: 74.6 15 psig: 90.3 20 psig: 106 25 psig: 122 30 psig: 138 40 psig: 170 50 psig: 202 60 psig: 233 70 psig: 267 80 psig: 298 90 psig: 331 100 psig: 362

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

 N/A 5 In. Hg.: 36.2 10 In. Hg.: 44.9

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

 N/A 15 In. Hg.: 46.8 20 In. Hg.: 46.8 30 In. Hg.: 46.8

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

 N/A 1 psig (6.9 kPag): 12.2 5 psig (34.5 kPag): 26.1 10 psig (69.0 kPag): 35.2 15 psig (103.4 kPag): 42.6 20 psig (137.9 kPag): 50.1 25 psig (172.4 kPag): 57.7 30 psig (206.9 kPag): 65.2 40 psig (275.8 kPag): 80.3 50 psig (344.8 kPag): 95.4 60 psig (413.7 kPag): 110 70 psig (482.7 kPag): 126 80 psig (551.6 kPag): 141 90 psig (620.6 kPag): 156 100 psig (689.5 kPag): 171

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

 N/A 5 In. Hg. (127 Mm. Hg.): 17.1 10 In. Hg. (254 Mm. Hg.): 21.2

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

 N/A 15 In. Hg. (381 Mm. Hg.): 22.1 20 In. Hg. (508 Mm. Hg.): 22.1 30 In. Hg. (762 Mm. Hg.): 22.1

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.088 2 psig: 0.124 3 psig: 0.152 4 psig: 0.176 5 psig: 0.197 6 psig: 0.216 7 psig: 0.233 8 psig: 0.249 9 psig: 0.264 10 psig: 0.278 15 psig: 0.341 20 psig: 0.394 30 psig: 0.482 40 psig: 0.557 50 psig: 0.622 60 psig: 0.682 70 psig: 0.736 80 psig: 0.787 90 psig: 0.835 100 psig: 0.880

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.333 2 psig (13.8 kPag): 0.471 3 psig (20.7 kPag): 0.577 4 psig (27.6 kPag): 0.666 5 psig (34.5 kPag): 0.745 6 psig (41.4 kPag): 0.816 7 psig (48.3 kPag): 0.881 8 psig (55.2 kPag): 0.942 9 psig (62.1 kPag): 0.999 10 psig (69 kPag): 1.053 15 psig (103.4 kPag): 1.290 20 psig (137.9 kPag): 1.490 30 psig (206.9 kPag): 1.825 40 psig (275.8 kPag): 2.107 50 psig (344.8 kPag): 2.355 60 psig (413.7 kPag): 2.580 70 psig (482.7 kPag): 2.787 80 psig (551.6 kPag): 2.979 90 psig (620.6 kPag): 3.16 100 psig (689.5 kPag): 3.331

Flow Data Status

 N/A Generic