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.
Unit of Measure

Specifications

Material

 N/A Brass

Nominal Orifice Size

 N/A 13

CV

 N/A 0.0038

Maximum Operating Pressure

 N/A 2000 psig

Taper

 N/A 45 º

Connection A

 N/A 1/8" NPT Male

Connection B

 N/A SAE 45 DEG #4 7/16"-20 Male

Screened

 N/A Screened

Dimensions

Orifice Diameter

 N/A 0.013 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 7/16 in

Total Length

 N/A 1.04 in

Application

N/A

    The integral screen/orifice assembly provides a compact arrangement. All types on this page The screen is located upstream of the orifice and protects against particles carried by the pressurized fluid. For protection against contamination in reverse flow situations add an external screen downstream of the orifice.

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: 0.962 5 psig: 2.25 10 psig: 3.14 15 psig: 3.92 20 psig: 4.64 25 psig: 5.30 30 psig: 5.98 40 psig: 7.31 50 psig: 8.62 60 psig: 10.0 70 psig: 11.3 80 psig: 12.6 90 psig: 13.9 100 psig: 15.3

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

 N/A 5 In. Hg.: 1.4 10 In. Hg.: 1.77

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

 N/A 15 In. Hg.: 1.91 20 In. Hg.: 1.91 30 In. Hg.: 1.91

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

 N/A 1 psig (6.9 kPag): 0.45 5 psig (34.5 kPag): 1.06 10 psig (69.0 kPag): 1.48 15 psig (103.4 kPag): 1.85 20 psig (137.9 kPag): 2.19 25 psig (172.4 kPag): 2.50 30 psig (206.9 kPag): 2.82 40 psig (275.8 kPag): 3.45 50 psig (344.8 kPag): 4.07 60 psig (413.7 kPag): 4.70 70 psig (482.7 kPag): 5.32 80 psig (551.6 kPag): 5.95 90 psig (620.6 kPag): 6.58 100 psig (689.5 kPag): 7.22

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

 N/A 5 In. Hg. (127 Mm. Hg.): 0.661 10 In. Hg. (254 Mm. Hg.): 0.834

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

 N/A 15 In. Hg. (381 Mm. Hg.): 0.902 20 In. Hg. (508 Mm. Hg.): 0.902 30 In. Hg. (762 Mm. Hg.): 0.902

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0038 2 psig: 0.0054 3 psig: 0.0066 4 psig: 0.0076 5 psig: 0.0085 6 psig: 0.0093 7 psig: 0.0101 8 psig: 0.0107 9 psig: 0.0114 10 psig: 0.0120 15 psig: 0.0147 20 psig: 0.0170 30 psig: 0.0208 40 psig: 0.0240 50 psig: 0.0269 60 psig: 0.0294 70 psig: 0.0318 80 psig: 0.0340 90 psig: 0.0360 100 psig: 0.0380

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0144 2 psig (13.8 kPag): 0.0203 3 psig (20.7 kPag): 0.0249 4 psig (27.6 kPag): 0.0288 5 psig (34.5 kPag): 0.0322 6 psig (41.4 kPag): 0.0322 7 psig (48.3 kPag): 0.0381 8 psig (55.2 kPag): 0.0407 9 psig (62.1 kPag): 0.0432 10 psig (69 kPag): 0.0455 15 psig (103.4 kPag): 0.0557 20 psig (137.9 kPag): 0.0643 30 psig (206.9 kPag): 0.0788 40 psig (275.8 kPag): 0.0910 50 psig (344.8 kPag): 0.1017 60 psig (413.7 kPag): 0.1114 70 psig (482.7 kPag): 0.1203 80 psig (551.6 kPag): 0.1287 90 psig (620.6 kPag): 0.1365 100 psig (689.5 kPag): 0.1438

Flow Data Status

 N/A Generic