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 process instruments and hydraulic systems are shown.
Unit of Measure

Specifications

Material

 303 SS

Nominal Orifice Size

 14

CV

 0.0043

Maximum Operating Pressure

 4000 psig

Connection A

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

Connection B

 SAE 37 DEG #4 7/16"-20 Female

Screened

 None

Dimensions

Orifice Diameter

 0.0142 in

Orifice Diameter Accuracy

 ±0.0005 in

Width Across Flats (Hex)

 9/16 in

Total Length

 1.14 in

Hex Height

 0.600 in

Application

N/A

    Type K4 is a 1/4" OD Tube and is suitable for use with a wide variety of compression fittings.Type K2 is for 1/8" OD Tube fittings.Types R4 and RG4 are suitable for use with face seal fittings. Types BFS and CFJ are used in hydraulic circuits, having SAE flare connections.

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)

 1 psig: 1.11 5 psig: 2.56 10 psig: 3.56 15 psig: 4.45 20 psig: 5.28 25 psig: 6.06 30 psig: 6.80 40 psig: 8.33 50 psig: 9.83 60 psig: 11.3 70 psig: 12.8 80 psig: 14.3 90 psig: 15.9 100 psig: 17.4

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

 5 In. Hg.: 1.64 10 In. Hg.: 2.06

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

 15 In. Hg.: 2.26 20 In. Hg.: 2.26 30 In. Hg.: 2.26

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

 1 psig (6.9 kPag): 0.52 5 psig (34.5 kPag): 1.21 10 psig (69.0 kPag): 1.68 15 psig (103.4 kPag): 2.10 20 psig (137.9 kPag): 2.49 25 psig (172.4 kPag): 2.86 30 psig (206.9 kPag): 3.21 40 psig (275.8 kPag): 3.93 50 psig (344.8 kPag): 4.64 60 psig (413.7 kPag): 5.34 70 psig (482.7 kPag): 6.05 80 psig (551.6 kPag): 6.77 90 psig (620.6 kPag): 7.49 100 psig (689.5 kPag): 8.21

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

 5 In. Hg. (127 Mm. Hg.): 0.773 10 In. Hg. (254 Mm. Hg.): 0.972

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

 15 In. Hg. (381 Mm. Hg.): 1.07 20 In. Hg. (508 Mm. Hg.): 1.07 30 In. Hg. (762 Mm. Hg.): 1.07

Water Flow - Gallons/minute (GPM)

 1 psig: 0.0043 2 psig: 0.0061 3 psig: 0.0074 4 psig: 0.0086 5 psig: 0.0096 6 psig: 0.0105 7 psig: 0.0114 8 psig: 0.0122 9 psig: 0.0129 10 psig: 0.0136 15 psig: 0.0167 20 psig: 0.0192 30 psig: 0.0236 40 psig: 0.0272 50 psig: 0.0304 60 psig: 0.0333 70 psig: 0.0360 80 psig: 0.0385 90 psig: 0.0408 100 psig: 0.0430

Water Flow - Liters/minute (LPM)

 1 psig (6.9 kPag): 0.0163 2 psig (13.8 kPag): 0.0230 3 psig (20.7 kPag): 0.0282 4 psig (27.6 kPag): 0.0326 5 psig (34.5 kPag): 0.0364 6 psig (41.4 kPag): 0.0364 7 psig (48.3 kPag): 0.0431 8 psig (55.2 kPag): 0.0460 9 psig (62.1 kPag): 0.0488 10 psig (69 kPag): 0.0515 15 psig (103.4 kPag): 0.0630 20 psig (137.9 kPag): 0.0728 30 psig (206.9 kPag): 0.0892 40 psig (275.8 kPag): 0.1029 50 psig (344.8 kPag): 0.1151 60 psig (413.7 kPag): 0.1261 70 psig (482.7 kPag): 0.1362 80 psig (551.6 kPag): 0.1456 90 psig (620.6 kPag): 0.1544 100 psig (689.5 kPag): 0.1628

Flow Data Status

 Generic