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-25-2-BR N/A 0.025 in N/A Brass N/A 0.014 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-26-2-BR N/A 0.026 in N/A Brass N/A 0.016 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-27-2-BR N/A 0.027 in N/A Brass N/A 0.017 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-28-2-BR N/A 0.028 in N/A Brass N/A 0.018 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-29-2-BR N/A 0.029 in N/A Brass N/A 0.019 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-31-2-BR N/A 0.031 in N/A Brass N/A 0.022 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-32-2-BR N/A 0.032 in N/A Brass N/A 0.024 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-33-2-BR N/A 0.033 in N/A Brass N/A 0.025 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-35-2-BR N/A 0.035 in N/A Brass N/A 0.028 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-37-2-BR N/A 0.037 in N/A Brass N/A 0.031 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-38-2-BR N/A 0.038 in N/A Brass N/A 0.032 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-39-2-BR N/A 0.039 in N/A Brass N/A 0.033 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-40-2-BR N/A 0.04 in N/A Brass N/A 0.036 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-41-2-BR N/A 0.041 in N/A Brass N/A 0.038 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-42-2-BR N/A 0.042 in N/A Brass N/A 0.039 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-43-2-BR N/A 0.043 in N/A Brass N/A 0.041 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-47-2-BR N/A 0.047 in N/A Brass N/A 0.048 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-52-2-BR N/A 0.052 in N/A Brass N/A 0.059 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-55-2-BR N/A 0.055 in N/A Brass N/A 0.068 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-60-2-BR N/A 0.06 in N/A Brass N/A 0.081 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-63-2-BR N/A 0.063 in N/A Brass N/A 0.088 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-67-2-BR N/A 0.0670 in N/A Brass N/A 0.100 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-70-2-BR N/A 0.0700 in N/A Brass N/A 0.110 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-73-2-BR N/A 0.0730 in N/A Brass N/A 0.120 N/A 2000 psig N/A 2 psig N/A None
EIJLCH-76-2-BR N/A 0.0760 in N/A Brass N/A 0.130 N/A 2000 psig N/A 2 psig N/A None
Unit of Measure
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