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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    Precision orifice assemblies that adapt to common fittings used in process instruments and hydraulic systems are shown.
Unit of Measure

Specifications

Material

 N/A Brass

Nominal Orifice Size

 N/A 19

CV

 N/A 0.008

Maximum Operating Pressure

 N/A 2000 psig

Taper

 N/A 45 º

Connection A

 N/A 1/8" NPT Male

Connection B

 N/A SAE 45 DEG #4 7/16"-20 Male

Screened

 N/A Screened

Dimensions

Orifice Diameter

 N/A 0.019 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 7/16 in

Total Length

 N/A 1.04 in

Application

N/A

    The integral screen/orifice assembly provides a compact arrangement. All types on this page The screen is located upstream of the orifice and protects against particles carried by the pressurized fluid. For protection against contamination in reverse flow situations add an external screen downstream of the orifice.

Advantages

N/A

  • High Pressure Capability
  • Bi-directional Flow
  • Economical Precision Orifice
  • Repeatable Orifice Size and Shape
  • Predictable Flow Rate

Flow Data

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

 N/A 1 psig: 2.03 5 psig: 4.70 10 psig: 6.00 15 psig: 7.56 20 psig: 9.03 25 psig: 10.4 30 psig: 11.8 40 psig: 14.5 50 psig: 17.3 60 psig: 20.0 70 psig: 22.9 80 psig: 25.6 90 psig: 28.4 100 psig: 31.1

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

 N/A 5 In. Hg.: 2.99 10 In. Hg.: 3.79

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

 N/A 15 In. Hg.: 4.11 20 In. Hg.: 4.11 30 In. Hg.: 4.11

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

 N/A 1 psig (6.9 kPag): 0.96 5 psig (34.5 kPag): 2.22 10 psig (69.0 kPag): 2.83 15 psig (103.4 kPag): 3.57 20 psig (137.9 kPag): 4.26 25 psig (172.4 kPag): 4.91 30 psig (206.9 kPag): 5.56 40 psig (275.8 kPag): 6.85 50 psig (344.8 kPag): 8.15 60 psig (413.7 kPag): 9.46 70 psig (482.7 kPag): 10.8 80 psig (551.6 kPag): 12.1 90 psig (620.6 kPag): 13.4 100 psig (689.5 kPag): 14.7

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

 N/A 5 In. Hg. (127 Mm. Hg.): 1.41 10 In. Hg. (254 Mm. Hg.): 1.79

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

 N/A 15 In. Hg. (381 Mm. Hg.): 1.94 20 In. Hg. (508 Mm. Hg.): 1.94 30 In. Hg. (762 Mm. Hg.): 1.94

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0080 2 psig: 0.0113 3 psig: 0.0139 4 psig: 0.0160 5 psig: 0.0179 6 psig: 0.0196 7 psig: 0.0212 8 psig: 0.0226 9 psig: 0.0240 10 psig: 0.0253 15 psig: 0.0310 20 psig: 0.0358 30 psig: 0.0438 40 psig: 0.0506 50 psig: 0.0566 60 psig: 0.0620 70 psig: 0.0669 80 psig: 0.0716 90 psig: 0.0759 100 psig: 0.0800

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0303 2 psig (13.8 kPag): 0.0428 3 psig (20.7 kPag): 0.0525 4 psig (27.6 kPag): 0.0606 5 psig (34.5 kPag): 0.0677 6 psig (41.4 kPag): 0.0677 7 psig (48.3 kPag): 0.0801 8 psig (55.2 kPag): 0.0857 9 psig (62.1 kPag): 0.0908 10 psig (69 kPag): 0.0958 15 psig (103.4 kPag): 0.1173 20 psig (137.9 kPag): 0.1354 30 psig (206.9 kPag): 0.1659 40 psig (275.8 kPag): 0.1915 50 psig (344.8 kPag): 0.2141 60 psig (413.7 kPag): 0.2346 70 psig (482.7 kPag): 0.2534 80 psig (551.6 kPag): 0.2709 90 psig (620.6 kPag): 0.2873 100 psig (689.5 kPag): 0.3028

Flow Data Status

 N/A Generic