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

EIJLC-15-0-BR N/A 0.015 in N/A Brass N/A 0.005 N/A 200 psig N/A 0 psig N/A None
EIJLC-16-0-BR N/A 0.016 in N/A Brass N/A 0.0055 N/A 200 psig N/A 0 psig N/A None
EIJLC-17-0-BR N/A 0.017 in N/A Brass N/A 0.0067 N/A 200 psig N/A 0 psig N/A None
EIJLC-18-0-BR N/A 0.018 in N/A Brass N/A 0.0073 N/A 200 psig N/A 0 psig N/A None
EIJLC-19-0-BR N/A 0.019 in N/A Brass N/A 0.008 N/A 200 psig N/A 0 psig N/A None
EIJLC-20-0-BR N/A 0.02 in N/A Brass N/A 0.0088 N/A 200 psig N/A 0 psig N/A None
EIJLC-21-0-BR N/A 0.021 in N/A Brass N/A 0.0096 N/A 200 psig N/A 0 psig N/A None
EIJLC-22-0-BR N/A 0.022 in N/A Brass N/A 0.011 N/A 200 psig N/A 0 psig N/A None
EIJLC-23-0-BR N/A 0.023 in N/A Brass N/A 0.012 N/A 200 psig N/A 0 psig N/A None
EIJLC-24-0-BR N/A 0.024 in N/A Brass N/A 0.013 N/A 200 psig N/A 0 psig N/A None
EIJLC-25-0-BR N/A 0.025 in N/A Brass N/A 0.014 N/A 200 psig N/A 0 psig N/A None
EIJLC-26-0-BR N/A 0.026 in N/A Brass N/A 0.016 N/A 200 psig N/A 0 psig N/A None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
EIJLC-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 None
Unit of Measure
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