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 43

CV

 N/A 0.041

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 0.043 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: 11.40 5 psig: 25.6 10 psig: 35.6 15 psig: 43.2 20 psig: 50.9 25 psig: 58.5 30 psig: 66.3 40 psig: 82.0 50 psig: 97.5 60 psig: 113 70 psig: 129 80 psig: 145 90 psig: 161 100 psig: 177

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

 N/A 5 In. Hg.: 16.3 10 In. Hg.: 20.3

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

 N/A 15 In. Hg.: 21.1 20 In. Hg.: 21.1 30 In. Hg.: 21.1

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

 N/A 1 psig (6.9 kPag): 5.36 5 psig (34.5 kPag): 12.1 10 psig (69.0 kPag): 16.8 15 psig (103.4 kPag): 20.4 20 psig (137.9 kPag): 24 25 psig (172.4 kPag): 27.6 30 psig (206.9 kPag): 31.3 40 psig (275.8 kPag): 38.7 50 psig (344.8 kPag): 46 60 psig (413.7 kPag): 53.5 70 psig (482.7 kPag): 61 80 psig (551.6 kPag): 68.5 90 psig (620.6 kPag): 76 100 psig (689.5 kPag): 83.5

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

 N/A 5 In. Hg. (127 Mm. Hg.): 7.67 10 In. Hg. (254 Mm. Hg.): 9.58

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

 N/A 15 In. Hg. (381 Mm. Hg.): 10 20 In. Hg. (508 Mm. Hg.): 10 30 In. Hg. (762 Mm. Hg.): 10

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.041 2 psig: 0.058 3 psig: 0.071 4 psig: 0.082 5 psig: 0.092 6 psig: 0.100 7 psig: 0.108 8 psig: 0.116 9 psig: 0.123 10 psig: 0.130 15 psig: 0.159 20 psig: 0.183 30 psig: 0.225 40 psig: 0.259 50 psig: 0.290 60 psig: 0.318 70 psig: 0.343 80 psig: 0.367 90 psig: 0.389 100 psig: 0.410

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.155 2 psig (13.8 kPag): 0.219 3 psig (20.7 kPag): 0.269 4 psig (27.6 kPag): 0.310 5 psig (34.5 kPag): 0.347 6 psig (41.4 kPag): 0.38 7 psig (48.3 kPag): 0.411 8 psig (55.2 kPag): 0.439 9 psig (62.1 kPag): 0.466 10 psig (69 kPag): 0.491 15 psig (103.4 kPag): 0.601 20 psig (137.9 kPag): 0.694 30 psig (206.9 kPag): 0.850 40 psig (275.8 kPag): 0.982 50 psig (344.8 kPag): 1.097 60 psig (413.7 kPag): 1.202 70 psig (482.7 kPag): 1.299 80 psig (551.6 kPag): 1.388 90 psig (620.6 kPag): 1.472 100 psig (689.5 kPag): 1.552

Flow Data Status

 N/A Generic