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 41

CV

 N/A 0.038

Maximum Operating Pressure

 N/A 2000 psig

Connection A

 N/A 3/8" NPT Male

Connection B

 N/A 3/8" 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 0.041 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 7/8 in

Total Length

 N/A 1.520 in

Flow Data

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

 N/A 1 psig: 9.90 5 psig: 22.5 10 psig: 31.4 15 psig: 38.6 20 psig: 45.3 25 psig: 52.3 30 psig: 59.3 40 psig: 73.3 50 psig: 87.5 60 psig: 102 70 psig: 117 80 psig: 131 90 psig: 146 100 psig: 164

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

 N/A 5 In. Hg.: 14.5 10 In. Hg.: 18.0

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

 N/A 15 In. Hg.: 18.8 20 In. Hg.: 18.8 30 In. Hg.: 18.8

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

 N/A 1 psig (6.9 kPag): 4.67 5 psig (34.5 kPag): 10.6 10 psig (69.0 kPag): 14.8 15 psig (103.4 kPag): 18.2 20 psig (137.9 kPag): 21.4 25 psig (172.4 kPag): 24.7 30 psig (206.9 kPag): 28 40 psig (275.8 kPag): 34.6 50 psig (344.8 kPag): 41.3 60 psig (413.7 kPag): 48.1 70 psig (482.7 kPag): 55 80 psig (551.6 kPag): 61.9 90 psig (620.6 kPag): 68.9 100 psig (689.5 kPag): 77.3

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

 N/A 5 In. Hg. (127 Mm. Hg.): 6.82 10 In. Hg. (254 Mm. Hg.): 8.5

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

 N/A 15 In. Hg. (381 Mm. Hg.): 8.87 20 In. Hg. (508 Mm. Hg.): 8.87 30 In. Hg. (762 Mm. Hg.): 8.87

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.038 2 psig: 0.054 3 psig: 0.066 4 psig: 0.076 5 psig: 0.085 6 psig: 0.093 7 psig: 0.101 8 psig: 0.107 9 psig: 0.114 10 psig: 0.120 15 psig: 0.147 20 psig: 0.170 30 psig: 0.208 40 psig: 0.240 50 psig: 0.269 60 psig: 0.294 70 psig: 0.318 80 psig: 0.340 90 psig: 0.360 100 psig: 0.380

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.144 2 psig (13.8 kPag): 0.203 3 psig (20.7 kPag): 0.249 4 psig (27.6 kPag): 0.288 5 psig (34.5 kPag): 0.322 6 psig (41.4 kPag): 0.352 7 psig (48.3 kPag): 0.381 8 psig (55.2 kPag): 0.407 9 psig (62.1 kPag): 0.432 10 psig (69 kPag): 0.455 15 psig (103.4 kPag): 0.557 20 psig (137.9 kPag): 0.643 30 psig (206.9 kPag): 0.788 40 psig (275.8 kPag): 0.910 50 psig (344.8 kPag): 1.017 60 psig (413.7 kPag): 1.114 70 psig (482.7 kPag): 1.203 80 psig (551.6 kPag): 1.287 90 psig (620.6 kPag): 1.365 100 psig (689.5 kPag): 1.438

Flow Data Status

 N/A Generic