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
« 36 37 38 39 40 

Part Number

Orifice Diameter

Material

CV

Maximum Fitting PRESSURE

DIFFERENTIAL CRACK PRESSURE

Screened

EIJLCS-27-0-BR N/A 0.027 in N/A Brass N/A 0.017 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-28-0-BR N/A 0.028 in N/A Brass N/A 0.018 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-29-0-BR N/A 0.029 in N/A Brass N/A 0.019 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-31-0-BR N/A 0.031 in N/A Brass N/A 0.022 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-32-0-BR N/A 0.032 in N/A Brass N/A 0.024 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-33-0-BR N/A 0.033 in N/A Brass N/A 0.025 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-35-0-BR N/A 0.035 in N/A Brass N/A 0.028 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-37-0-BR N/A 0.037 in N/A Brass N/A 0.031 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-38-0-BR N/A 0.038 in N/A Brass N/A 0.032 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-39-0-BR N/A 0.039 in N/A Brass N/A 0.033 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-40-0-BR N/A 0.04 in N/A Brass N/A 0.036 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-41-0-BR N/A 0.041 in N/A Brass N/A 0.038 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-42-0-BR N/A 0.042 in N/A Brass N/A 0.039 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-43-0-BR N/A 0.043 in N/A Brass N/A 0.041 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-47-0-BR N/A 0.047 in N/A Brass N/A 0.048 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-52-0-BR N/A 0.052 in N/A Brass N/A 0.059 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-55-0-BR N/A 0.055 in N/A Brass N/A 0.068 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-60-0-BR N/A 0.06 in N/A Brass N/A 0.081 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-63-0-BR N/A 0.063 in N/A Brass N/A 0.088 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-67-0-BR N/A 0.0670 in N/A Brass N/A 0.100 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-70-0-BR N/A 0.0700 in N/A Brass N/A 0.110 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-73-0-BR N/A 0.0730 in N/A Brass N/A 0.120 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-76-0-BR N/A 0.0760 in N/A Brass N/A 0.130 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-79-0-BR N/A 0.0790 in N/A Brass N/A 0.140 N/A 200 psig N/A 0 psig N/A Screened
EIJLCS-81-0-BR N/A 0.0810 in N/A Brass N/A 0.150 N/A 200 psig N/A 0 psig N/A Screened
Unit of Measure
« 36 37 38 39 40