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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    Checked orifices are a series arrangement of a precision orifice, a ball check valve and an optional screen. The all metal assemblies are made of brass or stainless steel. Gas or liquid can flow in one direction only, at a rate established by the metering orifice. Reverse pressure differential does not result in reverse flow. Standard sizes are 10-32, 1/8" NPT and 1/4" NPT. Custom requirements will be reviewed for large quantity applications.
Unit of Measure

Specifications

Material

 N/A Brass

Nominal Orifice Size

 N/A 29

CV

 N/A 0.019

Ball Material

 N/A 304 SS

Maximum Temperature

 N/A 300 ºF

Maximum Operating Pressure

 N/A 200 psig

Cracking Pressure

 N/A 10 psig

For Sizies

 N/A FOR 10-32, 1/8" NPT and 1/4" NPT

Connection A

 N/A 10-32 UNF Female

Connection B

 N/A 10-32 UNF Female

Screened

 N/A None

Dimensions

Orifice Diameter

 N/A 0.029 in

Outside Diameter

 N/A 3/8 in

Total Length

 N/A 0.78 in

Flow Data

Air Flow at 25 psig

 N/A 27.1 ft³/h

Air Flow at 100 psig

 N/A 78 ft³/h

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

 N/A 25 psig: 27.1 100 psig: 78

Application

N/A

  • Unidirectional gas or liquid flow
  • Backflow prevention in metering systems
  • Fluid contamination reduction
  • Isolation of fluid sources in mixers
  • Fuel line metering with no reverse flow
  • Medical metering of fluids