Data Sheet

Tank Blanketing, or padding, is the process and
practice of covering the surface of a stored
commodity, usually a liquid, with an inert gas. If
that commodity is volatile or toxic, tank blanketing
can prevent it from harming workers, equipment,
and the environment. When the commodity is a
food or other substance, blanketing protects it from
oxidation or contamination through exposure to air
or moisture. In most cases, tank blanketing gas is
pure, dry nitrogen.
Blanketing can prevent liquids from vaporizing into
the atmosphere and can maintain the tank’s vapor
space above a flammable or combustible liquid to
reduce potential ignition while pumping. It can
make up the volume of liquid displaced in or out of
a tank, or it can make up volume caused by thermal
changes of the tank’s contents, preventing the
creation of a vacuum or excess operating pressure
that could damage the tank.
Vapor recovery systems are mainly used to prevent
toxic vapors from escaping into the atmosphere.
When adding liquid to the tank or when the outside
temperature rises, causing the vapor inside the tank
to expand, the vapor recovery system senses the
increase in tank pressure and vents the excessive
tank pressure to a vapor recovery system.
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• Fully Balanced System
• High-Capacity
• High Sensitivity
• Tight Shutoff
• Low Setpoints
• In-line Maintenance
• Broad Material Selection
Tank Blanketing
T205 Series
Body Size
NPS 3/4 and 1 /
DN 20 and 25
Control Pressure Range
1-inch w.c. to 7 psig /
2 mbar to 0.48 bar
Maximum Inlet Pressure 200 psig / 13.8 bar
Flow up to
12,919 SCFH /
346.2 Nm
3
/h of Nitrogen
Operation Method Direct-Operated
Body Material
Cast Iron, Steel, and
Stainless Steel
Bulletin No. 74.1:T205
The T205 Series is a compact tank blanketing regulator ideal for blanketing small tanks
and vessels. The unit is easy to install and to maintain.
For larger applications, the Type Y692 is available in NPS 1-1/2 and 2 / DN 40 and 50 sizes.
Tank Blanketing
Type T205B
Body Size
NPS 3/4 and 1 /
DN 20 and 25
Control Pressure Range
2-inches w.c. to 7 psig /
5 mbar to 0.48 bar
Maximum Inlet
Pressure
200 psig / 13.8 bar
Flow up to
18,568 SCFH /
498 Nm
3
/h of Nitrogen
Operation Method Direct-Operated
Body Material
Cast Iron, Steel, and
Stainless Steel
Bulletin No. 74.1:T205B
The Type T205B balanced tank blanketing regulator is a direct-operated regulator with
fully balanced plug design to reduce inlet pressure sensitivity and with a large diaphragm
to accurately control tank pressure at low pressure settings on tank blanketing systems.
Vapor Recovery
T208 Series
Body Size
NPS 3/4 and 1
DN 20 and 25
Control Pressure Range
2-inches w.c. to 7 psig /
5 mbar to 0.48 bar
Maximum Inlet Pressure 75 psig / 5.2 bar
Flow up to
2286 SCFH /
61.3 Nm
3
/h of Nitrogen
Operation Method Direct-Operated
Body Material
Cast Iron, Steel, and
Stainless Steel
Bulletin No. 74.2:T208
The T208 Series is ideal for small vapor recovery systems. The unit may also be utilized as
a backpressure or relief valve. A larger NPS 1-1/2 and 2 DN 40 and 50 units are available in
the Type Y696.
Tank Blanketing