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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    One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order.
Unit of Measure

Specifications

Material

 N/A Brass

Nominal Orifice Size

 N/A 55

CV

 N/A 0.068

Maximum Operating Pressure

 N/A 2000 psig

Connection A

 N/A 1/4" NPT Male

Connection B

 N/A 1/4" NPT Female

Screened

 N/A None

Application

N/A

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

Dimensions

Orifice Diameter

 N/A 0.055 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 3/4 in

Total Length

 N/A 1.25 in

Flow Data

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

 N/A 1 psig: 19.90 5 psig: 43.0 10 psig: 57.4 15 psig: 69.7 20 psig: 82.0 25 psig: 94.5 30 psig: 107 40 psig: 132 50 psig: 157 60 psig: 182 70 psig: 207 80 psig: 231 90 psig: 256 100 psig: 282

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

 N/A 5 In. Hg.: 26.4 10 In. Hg.: 32.7

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

 N/A 15 In. Hg.: 33.7 20 In. Hg.: 33.7 30 In. Hg.: 33.7

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

 N/A 1 psig (6.9 kPag): 9.4 5 psig (34.5 kPag): 20.3 10 psig (69.0 kPag): 27.1 15 psig (103.4 kPag): 32.9 20 psig (137.9 kPag): 38.7 25 psig (172.4 kPag): 44.6 30 psig (206.9 kPag): 50.4 40 psig (275.8 kPag): 62.2 50 psig (344.8 kPag): 74 60 psig (413.7 kPag): 85.8 70 psig (482.7 kPag): 97.6 80 psig (551.6 kPag): 109 90 psig (620.6 kPag): 121 100 psig (689.5 kPag): 133

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

 N/A 5 In. Hg. (127 Mm. Hg.): 12.4 10 In. Hg. (254 Mm. Hg.): 15.4

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

 N/A 15 In. Hg. (381 Mm. Hg.): 15.9 20 In. Hg. (508 Mm. Hg.): 15.9 30 In. Hg. (762 Mm. Hg.): 15.9

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.068 2 psig: 0.096 3 psig: 0.118 4 psig: 0.136 5 psig: 0.152 6 psig: 0.167 7 psig: 0.180 8 psig: 0.192 9 psig: 0.204 10 psig: 0.215 15 psig: 0.263 20 psig: 0.304 30 psig: 0.372 40 psig: 0.430 50 psig: 0.481 60 psig: 0.527 70 psig: 0.569 80 psig: 0.608 90 psig: 0.645 100 psig: 0.680

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.257 2 psig (13.8 kPag): 0.364 3 psig (20.7 kPag): 0.446 4 psig (27.6 kPag): 0.515 5 psig (34.5 kPag): 0.576 6 psig (41.4 kPag): 0.631 7 psig (48.3 kPag): 0.681 8 psig (55.2 kPag): 0.728 9 psig (62.1 kPag): 0.772 10 psig (69 kPag): 0.814 15 psig (103.4 kPag): 0.997 20 psig (137.9 kPag): 1.151 30 psig (206.9 kPag): 1.41 40 psig (275.8 kPag): 1.628 50 psig (344.8 kPag): 1.820 60 psig (413.7 kPag): 1.994 70 psig (482.7 kPag): 2.154 80 psig (551.6 kPag): 2.302 90 psig (620.6 kPag): 2.442 100 psig (689.5 kPag): 2.574

Flow Data Status

 N/A Generic