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
Check Valves, Ball Type - NPT Connection; NPT Nipple, NPT Adapter - Line Drawing
Unit of Measure
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Part Number

Orifice Diameter

Material

CV

Maximum Fitting PRESSURE

DIFFERENTIAL CRACK PRESSURE

Screened

EIJLCH-38-0-SS N/A 0.038 in N/A 303 SS N/A 0.032 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-39-0-SS N/A 0.039 in N/A 303 SS N/A 0.033 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-40-0-SS N/A 0.04 in N/A 303 SS N/A 0.036 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-41-0-SS N/A 0.041 in N/A 303 SS N/A 0.038 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-42-0-SS N/A 0.042 in N/A 303 SS N/A 0.039 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-43-0-SS N/A 0.043 in N/A 303 SS N/A 0.041 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-47-0-SS N/A 0.047 in N/A 303 SS N/A 0.048 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-52-0-SS N/A 0.052 in N/A 303 SS N/A 0.059 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-55-0-SS N/A 0.055 in N/A 303 SS N/A 0.068 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-60-0-SS N/A 0.06 in N/A 303 SS N/A 0.081 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-63-0-SS N/A 0.063 in N/A 303 SS N/A 0.088 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-67-0-SS N/A 0.0670 in N/A 303 SS N/A 0.100 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-70-0-SS N/A 0.0700 in N/A 303 SS N/A 0.110 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-73-0-SS N/A 0.0730 in N/A 303 SS N/A 0.120 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-79-0-SS N/A 0.0790 in N/A 303 SS N/A 0.140 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-81-0-SS N/A 0.0810 in N/A 303 SS N/A 0.150 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-86-0-SS N/A 0.0860 in N/A 303 SS N/A 0.170 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-89-0-SS N/A 0.0890 in N/A 303 SS N/A 0.180 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-94-0-SS N/A 0.0940 in N/A 303 SS N/A 0.200 N/A 2000 psig N/A 0 psig N/A None
EIJLCH-10-2-SS N/A 0.0102 in N/A 303 SS N/A 0.0025 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-11-2-SS N/A 0.011 in N/A 303 SS N/A 0.0028 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-12-2-SS N/A 0.0122 in N/A 303 SS N/A 0.0034 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-13-2-SS N/A 0.013 in N/A 303 SS N/A 0.0038 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-14-2-SS N/A 0.0142 in N/A 303 SS N/A 0.0043 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-15-2-SS N/A 0.015 in N/A 303 SS N/A 0.005 N/A 2000 psig N/A 2 psig N/A None
Unit of Measure
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