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. Types K4, R4 and RG4 are used with nominal 1/4" tube fittings. Type BFS is for 45° flare fittings and Type CFJ is for 37° flare fittings. Type OD is a pipe adapter.
Unit of Measure

Dimensions

Orifice Diameter

 N/A 0.035 in

Outside Diameter

 N/A 0.47 in

Width

 N/A 0.030 in

Specifications

Material

 N/A 316 SS

Nominal Orifice Size

 N/A 35

CV

 N/A 0.028

Finish

 N/A Silver Plated

Maximum Operating Pressure

 N/A 100 psig

Connection A

 N/A 1/4" Face Seal

Application

N/A

  • Types R4 and RG4 are suitable for use with face seal fittings.

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: 7.37 5 psig: 16.3 10 psig: 22.5 15 psig: 27.8 20 psig: 32.4 25 psig: 37.5 30 psig: 42.4 40 psig: 52.5 50 psig: 62.5 60 psig: 72.7 70 psig: 83.1 80 psig: 93.0 90 psig: 106 100 psig: 114

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

 N/A 5 In. Hg.: 10.4 10 In. Hg.: 13.1

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

 N/A 15 In. Hg.: 13.8 20 In. Hg.: 13.8 30 In. Hg.: 13.8

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

 N/A 1 psig (6.9 kPag): 3.48 5 psig (34.5 kPag): 7.67 10 psig (69.0 kPag): 10.6 15 psig (103.4 kPag): 13.1 20 psig (137.9 kPag): 15.3 25 psig (172.4 kPag): 17.7 30 psig (206.9 kPag): 20 40 psig (275.8 kPag): 24.8 50 psig (344.8 kPag): 29.5 60 psig (413.7 kPag): 34.3 70 psig (482.7 kPag): 39.2 80 psig (551.6 kPag): 44 90 psig (620.6 kPag): 50 100 psig (689.5 kPag): 53.9

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

 N/A 5 In. Hg. (127 Mm. Hg.): 4.92 10 In. Hg. (254 Mm. Hg.): 6.18

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

 N/A 15 In. Hg. (381 Mm. Hg.): 6.5 20 In. Hg. (508 Mm. Hg.): 6.5 30 In. Hg. (762 Mm. Hg.): 6.5

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.028 2 psig: 0.040 3 psig: 0.048 4 psig: 0.056 5 psig: 0.063 6 psig: 0.069 7 psig: 0.074 8 psig: 0.079 9 psig: 0.084 10 psig: 0.089 15 psig: 0.108 20 psig: 0.125 30 psig: 0.153 40 psig: 0.177 50 psig: 0.198 60 psig: 0.217 70 psig: 0.234 80 psig: 0.250 90 psig: 0.266 100 psig: 0.280

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.106 2 psig (13.8 kPag): 0.150 3 psig (20.7 kPag): 0.184 4 psig (27.6 kPag): 0.212 5 psig (34.5 kPag): 0.237 6 psig (41.4 kPag): 0.260 7 psig (48.3 kPag): 0.280 8 psig (55.2 kPag): 0.300 9 psig (62.1 kPag): 0.318 10 psig (69 kPag): 0.335 15 psig (103.4 kPag): 0.411 20 psig (137.9 kPag): 0.474 30 psig (206.9 kPag): 0.581 40 psig (275.8 kPag): 0.67 50 psig (344.8 kPag): 0.749 60 psig (413.7 kPag): 0.821 70 psig (482.7 kPag): 0.887 80 psig (551.6 kPag): 0.948 90 psig (620.6 kPag): 1.006 100 psig (689.5 kPag): 1.060

Flow Data Status

 N/A Generic