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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Unit of Measure

Specifications

Flow Direction

 N/A Metal Orifice Assemblies can be used for flow in either direction. The Air Flow and Water Flow data is for a flow direction as shown in the product images.

Material

 N/A 303 SS

Nominal Orifice Size

 N/A 113

CV

 N/A 0.310

Orifice Geometry

 N/A Round

Maximum Operating Pressure

 N/A 4000 psig

Connection A

 N/A 3/8" NPT Male

Connection B

 N/A 3/8" NPT Male

Screened

 N/A None

Application

N/A

  • Precision Flow Control – Gases or Liquids
  • Speed Controls – Cylinders and Actuators
  • Accurate Timing in Pneumatic or Hydraulic Circuits
  • Flow Restriction
  • Accurate Throttling
  • Snubbers - Gages and Instruments
  • Ultrasonic Sound Sources

Advantages

N/A

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

Air Flow Notes

Air Flow Notes

 N/A Standard Conditions 70°F, 14.7 psia
SCFH – Standard Cu. Ft. Per Hour
SLPM – Standard Liters Per Minute
The Metal Orifice Air Flow data obtained with Type B restrictor.
Flow rates for other metal restrictors are essentially the same as for Type B.
The Metal Orifice Air Flow data supercedes previous publications.

Water Flow Notes

Water Flow Notes

 N/A The Metal Orifice Water Flow data calculated based on the Cv for each orifice. Flow = Cv √ΔP. ΔP = differential pressure in psid. It is assumed that the region on either side of the orifice is fully flooded with no air pockets.

Dimensions

Orifice Diameter

 N/A 0.1130 in

Width Across Flats (Hex)

 N/A 11/16 in

Total Length

 N/A 1.47 in

Flow Data

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

 N/A 1 psig: 91.4 5 psig: 195 10 psig: 250 15 psig: 303 20 psig: 354 25 psig: 405 30 psig: 458 40 psig: 566 50 psig: 672 60 psig: 780 70 psig: 892 80 psig: 1000 90 psig: 1106 100 psig: 1225

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

 N/A 5 In. Hg.: 123 10 In. Hg.: 153

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

 N/A 15 In. Hg.: 160 20 In. Hg.: 160 30 In. Hg.: 160

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

 N/A 1 psig (6.9 kPag): 43.1 5 psig (34.5 kPag): 92.1 10 psig (69.0 kPag): 118 15 psig (103.4 kPag): 143 20 psig (137.9 kPag): 167 25 psig (172.4 kPag): 191 30 psig (206.9 kPag): 216 40 psig (275.8 kPag): 267 50 psig (344.8 kPag): 317 60 psig (413.7 kPag): 368 70 psig (482.7 kPag): 421 80 psig (551.6 kPag): 472 90 psig (620.6 kPag): 522 100 psig (689.5 kPag): 578

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

 N/A 5 In. Hg. (127 Mm. Hg.): 57.9 10 In. Hg. (254 Mm. Hg.): 72.2

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

 N/A 15 In. Hg. (381 Mm. Hg.): 75.3 20 In. Hg. (508 Mm. Hg.): 75.3 30 In. Hg. (762 Mm. Hg.): 75.3

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.310 2 psig: 0.438 3 psig: 0.537 4 psig: 0.620 5 psig: 0.693 6 psig: 0.759 7 psig: 0.820 8 psig: 0.877 9 psig: 0.930 10 psig: 0.980 15 psig: 1.201 20 psig: 1.386 30 psig: 1.698 40 psig: 1.961 50 psig: 2.192 60 psig: 2.401 70 psig: 2.594 80 psig: 2.773 90 psig: 2.941 100 psig: 3.100

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 1.173 2 psig (13.8 kPag): 1.660 3 psig (20.7 kPag): 2.033 4 psig (27.6 kPag): 2.347 5 psig (34.5 kPag): 2.624 6 psig (41.4 kPag): 2.874 7 psig (48.3 kPag): 3.105 8 psig (55.2 kPag): 3.319 9 psig (62.1 kPag): 3.52 10 psig (69 kPag): 3.711 15 psig (103.4 kPag): 4.545 20 psig (137.9 kPag): 5.248 30 psig (206.9 kPag): 6.427 40 psig (275.8 kPag): 7.422 50 psig (344.8 kPag): 8.298 60 psig (413.7 kPag): 9.09 70 psig (482.7 kPag): 9.818 80 psig (551.6 kPag): 10.496 90 psig (620.6 kPag): 11.133 100 psig (689.5 kPag): 11.735

Flow Data Status

 N/A Generic