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 303 SS

Nominal Orifice Size

 N/A 20

CV

 N/A 0.0088

Connection A

 N/A 1/4" NPT Male

Connection B

 N/A 1/4" NPT Female

Screened

 N/A Screened

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 0.02 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: 2.22 5 psig: 5.23 10 psig: 6.70 15 psig: 8.50 20 psig: 10.3 25 psig: 11.8 30 psig: 13.4 40 psig: 16.5 50 psig: 19.6 60 psig: 22.7 70 psig: 25.9 80 psig: 29.0 90 psig: 32.2 100 psig: 35.2

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

 N/A 5 In. Hg.: 3.28 10 In. Hg.: 4.15

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

 N/A 15 In. Hg.: 4.64 20 In. Hg.: 4.64 30 In. Hg.: 4.64

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

 N/A 1 psig (6.9 kPag): 1.05 5 psig (34.5 kPag): 2.47 10 psig (69.0 kPag): 3.16 15 psig (103.4 kPag): 4.01 20 psig (137.9 kPag): 4.84 25 psig (172.4 kPag): 5.59 30 psig (206.9 kPag): 6.33 40 psig (275.8 kPag): 7.81 50 psig (344.8 kPag): 9.26 60 psig (413.7 kPag): 10.7 70 psig (482.7 kPag): 12.2 80 psig (551.6 kPag): 13.7 90 psig (620.6 kPag): 15.2 100 psig (689.5 kPag): 16.6

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

 N/A 5 In. Hg. (127 Mm. Hg.): 1.55 10 In. Hg. (254 Mm. Hg.): 1.96

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

 N/A 15 In. Hg. (381 Mm. Hg.): 2.19 20 In. Hg. (508 Mm. Hg.): 2.19 30 In. Hg. (762 Mm. Hg.): 2.19

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.009 2 psig: 0.012 3 psig: 0.015 4 psig: 0.018 5 psig: 0.020 6 psig: 0.022 7 psig: 0.023 8 psig: 0.025 9 psig: 0.026 10 psig: 0.028 15 psig: 0.034 20 psig: 0.039 30 psig: 0.048 40 psig: 0.056 50 psig: 0.062 60 psig: 0.068 70 psig: 0.074 80 psig: 0.079 90 psig: 0.083 100 psig: 0.088

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.033 2 psig (13.8 kPag): 0.047 3 psig (20.7 kPag): 0.058 4 psig (27.6 kPag): 0.067 5 psig (34.5 kPag): 0.074 6 psig (41.4 kPag): 0.074 7 psig (48.3 kPag): 0.088 8 psig (55.2 kPag): 0.094 9 psig (62.1 kPag): 0.100 10 psig (69 kPag): 0.105 15 psig (103.4 kPag): 0.129 20 psig (137.9 kPag): 0.149 30 psig (206.9 kPag): 0.182 40 psig (275.8 kPag): 0.211 50 psig (344.8 kPag): 0.236 60 psig (413.7 kPag): 0.258 70 psig (482.7 kPag): 0.279 80 psig (551.6 kPag): 0.298 90 psig (620.6 kPag): 0.316 100 psig (689.5 kPag): 0.333

Flow Data Status

 N/A Generic