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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    Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to as large as .035" orifice diameter. Special sizes can be made to order.
Unit of Measure

Specifications

Seal Material

 N/A Viton

Material

 N/A 303 SS

Nominal Orifice Size

 N/A 27

CV

 N/A 0.017

Maximum Operating Pressure

 N/A 100 psig

Taper

 N/A 7.5 º

Connection A

 N/A 10-32 UNF Male

Screened

 N/A Screened

Dimensions

Orifice Diameter

 N/A 0.027 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 1/4 in

Total Length

 N/A 0.310 in

Application

N/A

    The integral screen/orifice assembly provides a compact arrangement.
    Types QS, QXS – The screen protects the orifice from particles that could migrate from outside, when there is no fluid flow.

Flow Data

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

 N/A 1 psig: 4.13 5 psig: 9.41 10 psig: 13.6 15 psig: 16.8 20 psig: 19.7 25 psig: 22.7 30 psig: 25.4 40 psig: 31.1 50 psig: 36.7 60 psig: 42.4 70 psig: 48.1 80 psig: 53.6 90 psig: 59.3 100 psig: 65.3

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

 N/A 5 In. Hg.: 6 10 In. Hg.: 7.59

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

 N/A 15 In. Hg.: 8.01 20 In. Hg.: 8.01 30 In. Hg.: 8.01

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

 N/A 1 psig (6.9 kPag): 1.95 5 psig (34.5 kPag): 4.44 10 psig (69.0 kPag): 6.43 15 psig (103.4 kPag): 7.95 20 psig (137.9 kPag): 9.28 25 psig (172.4 kPag): 10.7 30 psig (206.9 kPag): 12.0 40 psig (275.8 kPag): 14.7 50 psig (344.8 kPag): 17.3 60 psig (413.7 kPag): 20.0 70 psig (482.7 kPag): 22.7 80 psig (551.6 kPag): 25.3 90 psig (620.6 kPag): 28.0 100 psig (689.5 kPag): 30.8

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

 N/A 5 In. Hg. (127 Mm. Hg.): 2.83 10 In. Hg. (254 Mm. Hg.): 3.58

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

 N/A 15 In. Hg. (381 Mm. Hg.): 3.78 20 In. Hg. (508 Mm. Hg.): 3.78 30 In. Hg. (762 Mm. Hg.): 3.78

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.017 2 psig: 0.024 3 psig: 0.029 4 psig: 0.034 5 psig: 0.038 6 psig: 0.042 7 psig: 0.045 8 psig: 0.048 9 psig: 0.051 10 psig: 0.054 15 psig: 0.066 20 psig: 0.076 30 psig: 0.093 40 psig: 0.108 50 psig: 0.120 60 psig: 0.132 70 psig: 0.142 80 psig: 0.152 90 psig: 0.161 100 psig: 0.170

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.064 2 psig (13.8 kPag): 0.091 3 psig (20.7 kPag): 0.111 4 psig (27.6 kPag): 0.129 5 psig (34.5 kPag): 0.144 6 psig (41.4 kPag): 0.144 7 psig (48.3 kPag): 0.170 8 psig (55.2 kPag): 0.182 9 psig (62.1 kPag): 0.193 10 psig (69 kPag): 0.203 15 psig (103.4 kPag): 0.249 20 psig (137.9 kPag): 0.288 30 psig (206.9 kPag): 0.352 40 psig (275.8 kPag): 0.407 50 psig (344.8 kPag): 0.455 60 psig (413.7 kPag): 0.498 70 psig (482.7 kPag): 0.538 80 psig (551.6 kPag): 0.576 90 psig (620.6 kPag): 0.610 100 psig (689.5 kPag): 0.644

Flow Data Status

 N/A Generic