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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    This type precision orifice includes an o-ring for sealing against a flat surface. The set screw style can be installed in fittings, manifolds and custom parts for accurate flow rate control of liquids or gases.
Unit of Measure

Specifications

Seal Material

 N/A Viton

Material

 N/A Brass

Nominal Orifice Size

 N/A 14

CV

 N/A 0.0043

Maximum Temperature

 N/A 300 ºF

Maximum Operating Pressure

 N/A 200 psig

Maximum Opening Diameter

 N/A 0.125 in

Connection A

 N/A 5/16"-18 UNC Threaded Insert O-ring seal

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.0142 in

Thread Size

 N/A 5/16-18

Width Across Flats (Hex)

 N/A 5/32 in

Total Length

 N/A 0.640 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Flow Data

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

 N/A 1 psig: 1.11 5 psig: 2.56 10 psig: 3.56 15 psig: 4.45 20 psig: 5.28 25 psig: 6.06 30 psig: 6.80 40 psig: 8.33 50 psig: 9.83 60 psig: 11.3 70 psig: 12.8 80 psig: 14.3 90 psig: 15.9 100 psig: 17.4

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

 N/A 5 In. Hg.: 1.64 10 In. Hg.: 2.06

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

 N/A 15 In. Hg.: 2.26 20 In. Hg.: 2.26 30 In. Hg.: 2.26

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

 N/A 1 psig (6.9 kPag): 0.52 5 psig (34.5 kPag): 1.21 10 psig (69.0 kPag): 1.68 15 psig (103.4 kPag): 2.10 20 psig (137.9 kPag): 2.49 25 psig (172.4 kPag): 2.86 30 psig (206.9 kPag): 3.21 40 psig (275.8 kPag): 3.93 50 psig (344.8 kPag): 4.64 60 psig (413.7 kPag): 5.34 70 psig (482.7 kPag): 6.05 80 psig (551.6 kPag): 6.77 90 psig (620.6 kPag): 7.49 100 psig (689.5 kPag): 8.21

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

 N/A 5 In. Hg. (127 Mm. Hg.): 0.773 10 In. Hg. (254 Mm. Hg.): 0.972

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

 N/A 15 In. Hg. (381 Mm. Hg.): 1.07 20 In. Hg. (508 Mm. Hg.): 1.07 30 In. Hg. (762 Mm. Hg.): 1.07

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0043 2 psig: 0.0061 3 psig: 0.0074 4 psig: 0.0086 5 psig: 0.0096 6 psig: 0.0105 7 psig: 0.0114 8 psig: 0.0122 9 psig: 0.0129 10 psig: 0.0136 15 psig: 0.0167 20 psig: 0.0192 30 psig: 0.0236 40 psig: 0.0272 50 psig: 0.0304 60 psig: 0.0333 70 psig: 0.0360 80 psig: 0.0385 90 psig: 0.0408 100 psig: 0.0430

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0163 2 psig (13.8 kPag): 0.0230 3 psig (20.7 kPag): 0.0282 4 psig (27.6 kPag): 0.0326 5 psig (34.5 kPag): 0.0364 6 psig (41.4 kPag): 0.0364 7 psig (48.3 kPag): 0.0431 8 psig (55.2 kPag): 0.0460 9 psig (62.1 kPag): 0.0488 10 psig (69 kPag): 0.0515 15 psig (103.4 kPag): 0.0630 20 psig (137.9 kPag): 0.0728 30 psig (206.9 kPag): 0.0892 40 psig (275.8 kPag): 0.1029 50 psig (344.8 kPag): 0.1151 60 psig (413.7 kPag): 0.1261 70 psig (482.7 kPag): 0.1362 80 psig (551.6 kPag): 0.1456 90 psig (620.6 kPag): 0.1544 100 psig (689.5 kPag): 0.1628

Flow Data Status

 N/A Generic