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.
Checked Orifices, Ball Type, Coupling
Check Valves, Ball Type - 10-32 UNF Connection; Coupling, Adapter - Line Drawing
Unit of Measure
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Part Number

Orifice Diameter

Material

CV

Maximum Fitting PRESSURE

DIFFERENTIAL CRACK PRESSURE

Screened

FIFLCS-20-0-SS N/A 0.02 in N/A 303 SS N/A 0.0088 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-21-0-SS N/A 0.021 in N/A 303 SS N/A 0.0096 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-22-0-SS N/A 0.022 in N/A 303 SS N/A 0.011 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-23-0-SS N/A 0.023 in N/A 303 SS N/A 0.012 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-24-0-SS N/A 0.024 in N/A 303 SS N/A 0.013 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-25-0-SS N/A 0.025 in N/A 303 SS N/A 0.014 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-26-0-SS N/A 0.026 in N/A 303 SS N/A 0.016 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-27-0-SS N/A 0.027 in N/A 303 SS N/A 0.017 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-28-0-SS N/A 0.028 in N/A 303 SS N/A 0.018 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-29-0-SS N/A 0.029 in N/A 303 SS N/A 0.019 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-31-0-SS N/A 0.031 in N/A 303 SS N/A 0.022 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-32-0-SS N/A 0.032 in N/A 303 SS N/A 0.024 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-33-0-SS N/A 0.033 in N/A 303 SS N/A 0.025 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-35-0-SS N/A 0.035 in N/A 303 SS N/A 0.028 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-37-0-SS N/A 0.037 in N/A 303 SS N/A 0.031 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-38-0-SS N/A 0.038 in N/A 303 SS N/A 0.032 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-39-0-SS N/A 0.039 in N/A 303 SS N/A 0.033 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-40-0-SS N/A 0.04 in N/A 303 SS N/A 0.036 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-41-0-SS N/A 0.041 in N/A 303 SS N/A 0.038 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-42-0-SS N/A 0.042 in N/A 303 SS N/A 0.039 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-43-0-SS N/A 0.043 in N/A 303 SS N/A 0.041 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-47-0-SS N/A 0.047 in N/A 303 SS N/A 0.048 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-52-0-SS N/A 0.052 in N/A 303 SS N/A 0.059 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-55-0-SS N/A 0.055 in N/A 303 SS N/A 0.068 N/A 200 psig N/A 0 psig N/A Screened
FIFLCS-60-0-SS N/A 0.06 in N/A 303 SS N/A 0.081 N/A 200 psig N/A 0 psig N/A Screened
Unit of Measure
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