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 31

CV

 N/A 0.022

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 0.031 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: 5.62 5 psig: 12.4 10 psig: 18.3 15 psig: 22.5 20 psig: 26.3 25 psig: 30.1 30 psig: 33.7 40 psig: 41.1 50 psig: 48.5 60 psig: 55.9 70 psig: 63.6 80 psig: 71.2 90 psig: 78.8 100 psig: 86.7

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

 N/A 5 In. Hg.: 8.01 10 In. Hg.: 10.1

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

 N/A 15 In. Hg.: 10.7 20 In. Hg.: 10.7 30 In. Hg.: 10.7

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

 N/A 1 psig (6.9 kPag): 2.65 5 psig (34.5 kPag): 5.86 10 psig (69.0 kPag): 8.63 15 psig (103.4 kPag): 10.6 20 psig (137.9 kPag): 12.4 25 psig (172.4 kPag): 14.2 30 psig (206.9 kPag): 15.9 40 psig (275.8 kPag): 19.4 50 psig (344.8 kPag): 22.9 60 psig (413.7 kPag): 26.4 70 psig (482.7 kPag): 30.0 80 psig (551.6 kPag): 33.6 90 psig (620.6 kPag): 37.2 100 psig (689.5 kPag): 40.9

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

 N/A 5 In. Hg. (127 Mm. Hg.): 3.78 10 In. Hg. (254 Mm. Hg.): 4.77

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

 N/A 15 In. Hg. (381 Mm. Hg.): 5.05 20 In. Hg. (508 Mm. Hg.): 5.05 30 In. Hg. (762 Mm. Hg.): 5.05

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.022 2 psig: 0.031 3 psig: 0.038 4 psig: 0.044 5 psig: 0.049 6 psig: 0.054 7 psig: 0.058 8 psig: 0.062 9 psig: 0.066 10 psig: 0.070 15 psig: 0.085 20 psig: 0.098 30 psig: 0.120 40 psig: 0.139 50 psig: 0.156 60 psig: 0.170 70 psig: 0.184 80 psig: 0.197 90 psig: 0.209 100 psig: 0.220

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.083 2 psig (13.8 kPag): 0.118 3 psig (20.7 kPag): 0.144 4 psig (27.6 kPag): 0.167 5 psig (34.5 kPag): 0.186 6 psig (41.4 kPag): 0.186 7 psig (48.3 kPag): 0.220 8 psig (55.2 kPag): 0.236 9 psig (62.1 kPag): 0.250 10 psig (69 kPag): 0.263 15 psig (103.4 kPag): 0.323 20 psig (137.9 kPag): 0.372 30 psig (206.9 kPag): 0.456 40 psig (275.8 kPag): 0.527 50 psig (344.8 kPag): 0.589 60 psig (413.7 kPag): 0.645 70 psig (482.7 kPag): 0.697 80 psig (551.6 kPag): 0.745 90 psig (620.6 kPag): 0.790 100 psig (689.5 kPag): 0.833

Flow Data Status

 N/A Generic