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Design and principle of operation
Bypass and shut-off valves
We recommend installing a shut-off valve (1)
both upstream of the strainer and down-
stream of the regulator and installing a by-
pass line. The bypass ensures that the plant
does not need to be shut down for service
and repair work on the regulator.
Insulation
Regulators can be insulated to reduce heat
energy transfer.
Refer to the instructions in the 'Installation'
section.
Note
The Types 44-0 B and 44-1 B Regulators are
not safety valves. If necessary, a suitable
overpressure protection must be installed on
site in the plant section.
3-4
3.2 Technical data
The regulator nameplate provides informa-
tion on the regulator version (see the 'Mark-
ings on the device' section).
Note
More information is available in Data Sheet
u T 2626.
Process medium and scope of application
The Type 44-0 B and Type 44-1 B Pressure
Reducing Valves are used to maintain the
pressure downstream of the valve to an ad-
justed set point.
− Type 44-0 B for vapors
− Type 44-1 B for gases and liquids
− Max. temperature of Type 44-0 B
200 °C/390 °F
− Max. temperature of Type 44-1 B
150 °C/300 °F
− Set points from 0.2 to 20 bar/3 to
290 psi
− Valve sizes G ½ to 1/½ NPT to 1 NPT
and DN 15 to 25/NPS ½ to 1
− Pressure ratings PN 25/Class 150
and 300/JIS 20K
The regulator is open when relieved of pres-
sure. The valve closes when the downstream
pressure rises.
Leakage class
The regulators have the leakage class I ac-
cording to IEC 60534-4.
EB 2626-1 EN
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