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
Print Back
    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 7

CV

 N/A 0.0012

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 0.0071 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: 0.269 5 psig: 0.64 10 psig: 0.91 15 psig: 1.14 20 psig: 1.38 25 psig: 1.59 30 psig: 1.80 40 psig: 2.22 50 psig: 2.67 60 psig: 3.09 70 psig: 3.54 80 psig: 3.96 90 psig: 4.41 100 psig: 4.83

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

 N/A 5 In. Hg.: 0.405 10 In. Hg.: 0.521

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

 N/A 15 In. Hg.: 0.568 20 In. Hg.: 0.568 30 In. Hg.: 0.568

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

 N/A 1 psig (6.9 kPag): 0.127 5 psig (34.5 kPag): 0.30 10 psig (69.0 kPag): 0.43 15 psig (103.4 kPag): 0.54 20 psig (137.9 kPag): 0.65 25 psig (172.4 kPag): 0.75 30 psig (206.9 kPag): 0.85 40 psig (275.8 kPag): 1.05 50 psig (344.8 kPag): 1.26 60 psig (413.7 kPag): 1.46 70 psig (482.7 kPag): 1.67 80 psig (551.6 kPag): 1.87 90 psig (620.6 kPag): 2.08 100 psig (689.5 kPag): 2.28

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

 N/A 5 In. Hg. (127 Mm. Hg.): 0.191 10 In. Hg. (254 Mm. Hg.): 0.246

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

 N/A 15 In. Hg. (381 Mm. Hg.): 0.268 20 In. Hg. (508 Mm. Hg.): 0.268 30 In. Hg. (762 Mm. Hg.): 0.268

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0012 2 psig: 0.0017 3 psig: 0.0021 4 psig: 0.0024 5 psig: 0.0027 6 psig: 0.0029 7 psig: 0.0032 8 psig: 0.0034 9 psig: 0.0036 10 psig: 0.0038 15 psig: 0.0046 20 psig: 0.0054 30 psig: 0.0066 40 psig: 0.0076 50 psig: 0.0085 60 psig: 0.0093 70 psig: 0.0100 80 psig: 0.0107 90 psig: 0.0114 100 psig: 0.0120

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0045 2 psig (13.8 kPag): 0.0064 3 psig (20.7 kPag): 0.0079 4 psig (27.6 kPag): 0.0091 5 psig (34.5 kPag): 0.0102 6 psig (41.4 kPag): 0.0102 7 psig (48.3 kPag): 0.0120 8 psig (55.2 kPag): 0.0128 9 psig (62.1 kPag): 0.0136 10 psig (69 kPag): 0.0144 15 psig (103.4 kPag): 0.0176 20 psig (137.9 kPag): 0.0203 30 psig (206.9 kPag): 0.0249 40 psig (275.8 kPag): 0.0287 50 psig (344.8 kPag): 0.0321 60 psig (413.7 kPag): 0.0352 70 psig (482.7 kPag): 0.0380 80 psig (551.6 kPag): 0.0406 90 psig (620.6 kPag): 0.0431 100 psig (689.5 kPag): 0.0454

Flow Data Status

 N/A Generic