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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    Set screw style threaded orifice inserts can be installed in fittings, manifolds or custom parts to establish flow rates of liquids or gases. Standard size orifices range from .004" to .063". Both brass and 316 SS materials are offered.
Unit of Measure

Specifications

Material

 N/A 316 SS

Nominal Orifice Size

 N/A 9

Connection A

 N/A 1/4"-20 UNC Threaded Insert

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.0091 in

Thread Size

 N/A 1/4-20

Width Across Flats (Hex)

 N/A 1/8 in

Total Length

 N/A 0.50 in

Flow Data

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

 N/A 1 psig: 0.479 5 psig: 1.10 10 psig: 1.57 15 psig: 1.97 20 psig: 2.33 25 psig: 2.69 30 psig: 3.03 40 psig: 3.75 50 psig: 4.45 60 psig: 5.13 70 psig: 5.83 80 psig: 6.53 90 psig: 7.20 100 psig: 7.88

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

 N/A 5 In. Hg.: 0.703 10 In. Hg.: 0.892

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

 N/A 15 In. Hg.: 0.964 20 In. Hg.: 0.964 30 In. Hg.: 0.964

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

 N/A 1 psig (6.9 kPag): 0.226 5 psig (34.5 kPag): 0.52 10 psig (69.0 kPag): 0.74 15 psig (103.4 kPag): 0.93 20 psig (137.9 kPag): 1.10 25 psig (172.4 kPag): 1.27 30 psig (206.9 kPag): 1.43 40 psig (275.8 kPag): 1.77 50 psig (344.8 kPag): 2.10 60 psig (413.7 kPag): 2.42 70 psig (482.7 kPag): 2.75 80 psig (551.6 kPag): 3.08 90 psig (620.6 kPag): 3.40 100 psig (689.5 kPag): 3.72

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

 N/A 5 In. Hg. (127 Mm. Hg.): 0.332 10 In. Hg. (254 Mm. Hg.): 0.421

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

 N/A 15 In. Hg. (381 Mm. Hg.): 0.455 20 In. Hg. (508 Mm. Hg.): 0.455 30 In. Hg. (762 Mm. Hg.): 0.455

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0019 2 psig: 0.0027 3 psig: 0.0033 4 psig: 0.0038 5 psig: 0.0042 6 psig: 0.0047 7 psig: 0.0050 8 psig: 0.0054 9 psig: 0.0057 10 psig: 0.0060 15 psig: 0.0074 20 psig: 0.0085 30 psig: 0.0104 40 psig: 0.0120 50 psig: 0.0134 60 psig: 0.0147 70 psig: 0.0159 80 psig: 0.0170 90 psig: 0.0180 100 psig: 0.0190

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0072 2 psig (13.8 kPag): 0.0102 3 psig (20.7 kPag): 0.0125 4 psig (27.6 kPag): 0.0144 5 psig (34.5 kPag): 0.0161 6 psig (41.4 kPag): 0.0161 7 psig (48.3 kPag): 0.0190 8 psig (55.2 kPag): 0.0203 9 psig (62.1 kPag): 0.0216 10 psig (69 kPag): 0.0227 15 psig (103.4 kPag): 0.0279 20 psig (137.9 kPag): 0.0322 30 psig (206.9 kPag): 0.0394 40 psig (275.8 kPag): 0.0455 50 psig (344.8 kPag): 0.0509 60 psig (413.7 kPag): 0.0557 70 psig (482.7 kPag): 0.0602 80 psig (551.6 kPag): 0.0643 90 psig (620.6 kPag): 0.0682 100 psig (689.5 kPag): 0.0719

Flow Data Status

 N/A Generic