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 33

CV

 N/A 0.025

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 0.033 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: 6.42 5 psig: 14.4 10 psig: 21.1 15 psig: 26.1 20 psig: 30.3 25 psig: 34.5 30 psig: 39.0 40 psig: 47.7 50 psig: 56.4 60 psig: 65.0 70 psig: 73.9 80 psig: 82.6 90 psig: 91.5 100 psig: 101

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

 N/A 5 In. Hg.: 9.15 10 In. Hg.: 11.5

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

 N/A 15 In. Hg.: 12.1 20 In. Hg.: 12.1 30 In. Hg.: 12.1

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

 N/A 1 psig (6.9 kPag): 3.03 5 psig (34.5 kPag): 6.80 10 psig (69.0 kPag): 9.98 15 psig (103.4 kPag): 12.3 20 psig (137.9 kPag): 14.3 25 psig (172.4 kPag): 16.3 30 psig (206.9 kPag): 18.4 40 psig (275.8 kPag): 22.5 50 psig (344.8 kPag): 26.6 60 psig (413.7 kPag): 30.7 70 psig (482.7 kPag): 34.9 80 psig (551.6 kPag): 39.0 90 psig (620.6 kPag): 43.2 100 psig (689.5 kPag): 47.5

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

 N/A 5 In. Hg. (127 Mm. Hg.): 4.32 10 In. Hg. (254 Mm. Hg.): 5.43

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

 N/A 15 In. Hg. (381 Mm. Hg.): 5.72 20 In. Hg. (508 Mm. Hg.): 5.72 30 In. Hg. (762 Mm. Hg.): 5.72

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.025 2 psig: 0.035 3 psig: 0.043 4 psig: 0.050 5 psig: 0.056 6 psig: 0.061 7 psig: 0.066 8 psig: 0.071 9 psig: 0.075 10 psig: 0.079 15 psig: 0.097 20 psig: 0.112 30 psig: 0.137 40 psig: 0.158 50 psig: 0.177 60 psig: 0.194 70 psig: 0.209 80 psig: 0.224 90 psig: 0.237 100 psig: 0.250

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.095 2 psig (13.8 kPag): 0.134 3 psig (20.7 kPag): 0.164 4 psig (27.6 kPag): 0.189 5 psig (34.5 kPag): 0.212 6 psig (41.4 kPag): 0.212 7 psig (48.3 kPag): 0.250 8 psig (55.2 kPag): 0.268 9 psig (62.1 kPag): 0.284 10 psig (69 kPag): 0.299 15 psig (103.4 kPag): 0.367 20 psig (137.9 kPag): 0.423 30 psig (206.9 kPag): 0.518 40 psig (275.8 kPag): 0.599 50 psig (344.8 kPag): 0.669 60 psig (413.7 kPag): 0.733 70 psig (482.7 kPag): 0.792 80 psig (551.6 kPag): 0.846 90 psig (620.6 kPag): 0.898 100 psig (689.5 kPag): 0.946

Flow Data Status

 N/A Generic