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 Brass

Nominal Orifice Size

 N/A 18

Connection A

 N/A 5/16"-18 UNC Threaded Insert

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.018 in

Thread Size

 N/A 5/16-18

Width Across Flats (Hex)

 N/A 5/32 in

Total Length

 N/A 0.50 in

Flow Data

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

 N/A 1 psig: 1.82 5 psig: 4.20 10 psig: 5.38 15 psig: 6.84 20 psig: 8.18 25 psig: 9.43 30 psig: 10.7 40 psig: 13.2 50 psig: 15.7 60 psig: 18.2 70 psig: 20.7 80 psig: 23.3 90 psig: 25.9 100 psig: 28.4

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

 N/A 5 In. Hg.: 2.7 10 In. Hg.: 3.35

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

 N/A 15 In. Hg.: 3.71 20 In. Hg.: 3.71 30 In. Hg.: 3.71

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

 N/A 1 psig (6.9 kPag): 0.86 5 psig (34.5 kPag): 1.98 10 psig (69.0 kPag): 2.54 15 psig (103.4 kPag): 3.23 20 psig (137.9 kPag): 3.86 25 psig (172.4 kPag): 4.45 30 psig (206.9 kPag): 5.03 40 psig (275.8 kPag): 6.21 50 psig (344.8 kPag): 7.40 60 psig (413.7 kPag): 8.58 70 psig (482.7 kPag): 9.77 80 psig (551.6 kPag): 11.0 90 psig (620.6 kPag): 12.2 100 psig (689.5 kPag): 13.4

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

 N/A 5 In. Hg. (127 Mm. Hg.): 1.28 10 In. Hg. (254 Mm. Hg.): 1.58

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

 N/A 15 In. Hg. (381 Mm. Hg.): 1.75 20 In. Hg. (508 Mm. Hg.): 1.75 30 In. Hg. (762 Mm. Hg.): 1.75

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0073 2 psig: 0.0103 3 psig: 0.0126 4 psig: 0.0146 5 psig: 0.0163 6 psig: 0.0179 7 psig: 0.0193 8 psig: 0.0206 9 psig: 0.0219 10 psig: 0.0231 15 psig: 0.0283 20 psig: 0.0326 30 psig: 0.0400 40 psig: 0.0462 50 psig: 0.0516 60 psig: 0.0565 70 psig: 0.0611 80 psig: 0.0653 90 psig: 0.0693 100 psig: 0.0730

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0276 2 psig (13.8 kPag): 0.0391 3 psig (20.7 kPag): 0.0479 4 psig (27.6 kPag): 0.0553 5 psig (34.5 kPag): 0.0618 6 psig (41.4 kPag): 0.0618 7 psig (48.3 kPag): 0.0731 8 psig (55.2 kPag): 0.0782 9 psig (62.1 kPag): 0.0829 10 psig (69 kPag): 0.0874 15 psig (103.4 kPag): 0.1070 20 psig (137.9 kPag): 0.1236 30 psig (206.9 kPag): 0.1514 40 psig (275.8 kPag): 0.1748 50 psig (344.8 kPag): 0.1954 60 psig (413.7 kPag): 0.2140 70 psig (482.7 kPag): 0.2312 80 psig (551.6 kPag): 0.2472 90 psig (620.6 kPag): 0.2622 100 psig (689.5 kPag): 0.2763

Flow Data Status

 N/A Generic