Taylor-Wharton XL-55HP User Manual
TW-288
1
Instructions for
XL-45HP, XL-50HP, XL-55HP and XL-50VHP
with Dual Regulator
Do not attempt to use or maintain this
unit until you read and understand these
instructions. Do not permit untrained
persons to use or maintain this unit. If
you do not fully understand these
instructions, contact your supplier for
further information.
CONTAINER
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SAFETY
NOTE:
For detailed
information on the
handling of cryogenic
liquids, refer to the
Compressed Gas
Association
publication: P-12
Safe Handling of
Cryogenic Liquids
available from the
Compressed Gas
Association, Inc. 1235
Jefferson Davis
Highway, Arlington,
VA 22202.
Pressure Hazard The containers covered by this literature may contain pressures up to
350 psig (24 bar/2413 kPa) for the XL-45HP/50HP/55HP and pressures up to 500 psig (34
bar/3447 kPa) for the XL-50VHP. Sudden release of this pressure may cause personal
injury by issuing cold gas or liquid, or by expelling parts during servicing. Do not attempt
any repairs on these containers until all pressure is released, and the contents have been
allowed to vaporize to ensure no pressure build-up can occur.
Extreme Cold-Cover Eyes and Exposed Skin Accidental contact of the skin or eyes
with any cryogenic liquid or cold issuing gas may cause a freezing injury similar to frostbite. Protect your eyes and over your skin when handling the container or transferring
liquid, or in any instance where the possibility of contact with liquid, cold popes and cold
gas may exist. Safety goggles or a face shield should be worn when withdrawing liquid or
gas. Long-sleeved clothing and gloves that can be easily removed are recommended for
skin protection. Cryogenic liquids are extremely cold and will be at temperatures below 300°F (-184°C) under normal atmospheric pressure.
Keep Equipment Well Ventilated Although some of the gases used in these containers are non-toxic and non-flammable, they can cause asphyxiation in a confined area
without adequate ventilation. An atmosphere that does not contain enough oxygen for
breathing will cause dizziness, unconsciousness, or even death. These gasses cannot
be detected by the human senses and will be inhaled normally as if they were air. Ensure
there is adequate ventilation where these gasses are used and store liquid containers
outdoors or only in well ventilated are.
Replacement Parts Must be Cleaned for Oxygen Service Some materials, especially non-metallic gaskets and seals, can be a combustion hazard if used in oxygen or
nitrous oxide service, although they may be acceptable for use with other cryogenic liquids. Use only Taylor-Wharton recommended spare parts, and be certain parts used on
oxygen or nitrous oxide equipment marked cleaned for oxygen service. For information
on cleaning, consult the Compressed Gas Association (CGA) pamphlet G-4.1, Cleaning
for Oxygen Service or equivalent industrial cleaning specifications.
GENERAL
INFORMATION
NOTE:
The Xl-50VHP is not
designed to store or
transport cryogenic
liquid nitrous oxide.
Install Relief Valves in Cryogenic Liquid Lines - When installing piping of fill hose
assemblies, make certain a suitable safety relief valve is installed in each section of
plumbing between shut-off valves. Trapped liquefied gas will expand as it warms and may
burst hoses or piping causing damage or personal injury.
The XL-45HP, XL-50HP, XL-55HP and XL50VHP are vacuum insulated, stainless steel
containers designed to store and transport cryogenic liquid oxygen, nitrogen, argon, carbon dioxide, and nitrous oxide. Built to DOT 4L standards, these containers may be used
for over the road transportation of cryogenic fluids, as well as on-site storage and supply
in a wide range of applications.
As rugged, long holding time, self-contained gas supply systems, these cylinders are
capable of providing continuous flow rates of up to 150 cfh (3.9 cu.m/h) in carbon dioxide
service, up to 110 cfh (2.9 cu.m/h) in nitrous oxide service, up to 350 cfh (9.2 cu.m/h) in
other gas services. The XL-45HP/50HP/55HP are designed to hold liquid with a relief valve
setting of 350 psig (24 bar/2413 kPa) and the XL-50VHP with a relief valve setting of 500
psig (34 bar/3447 kPa), which provides greater holding times than lower pressure cryogenic containers
SPECIFICATIONS
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XL-45HP XL-50HP XL-55HP XL-50VHP
Dimensions
Diameter 20 in. (508 mm) 20 in. (508 mm) 20 in. (508 mm) 20 in. (508 mm)
Height 61 3/8 in. (1559 mm) 64 5/8 in. (1641 mm) 69 7/16 in. (1764 mm) 64 3/4 in. (1645 mm)
Weight
Empty (Nominal) 272 lb. (123 kg) 284 lb. (129 kg) 287 lb. (130 kg) 310 lb. (141 kg)
Capacity, Gross 176 liters 188 liters 208 liters 188 liters
Capacity, Useable Liquid 165 liters 176 liters 198 liters 176 liters
Weight of Contents Maximum
Based on DOT Rated Service Pressure
Carbon Dioxide 387 lb. (176 kg) 414 lb. (188 kg) 458 (208 kg) 381 (173 kg)
Oxygen 360 lb. (163 lb.) 385 lb. (175 kg) 426 (193 kg) 364 lb. (165 kg)
Nitrogen 252 lb. (114 kg) 269 lb. (122 kg) 298 lb. (135 kg) 240 lb. (109 kg)
Argon 438 lb. (199 kg) 467 lb. (212 kg) 518 lb. (235 kg) 443 lb. (201 kg)
Nitrous Oxide 368 lb. (167 kg) 393 lb. (178 kg) 435 lb. (197 kg) N/A
Normal Evaporation Rate*
(% Capacity per Day)
Carbon Dioxide 0.75%0.75% 0.75% 0.80%
Oxygen 1.4% 1.2% 1.2% 1.5%
Nitrogen 2.2% 2.0% 1.9% 2.2%
Argon 1.4% 1.2% 1.2% 1.5%
Nitrous Oxide 0.75% 0.75% 0.75% N/A
Gas Flow Rate @ NTP (STP)**
Carbon Dioxide 150 cfh (3.9 cu.m/h) 150 cfh (3.9 cu.m/h) 150 cfh (3.9 cu.m/h) 150 cfh (3.9 cu.m/h)
Oxygen, Nitrogen, Argon 350 cfh (9.2 cu.m/h) 350 cfh (9.2 cu.m/h) 350 cfh (9.2 cu.m/h) 350 cfh (9.2 cu.m/h)
Nitrous Oxide 110 cfh (2.9 cu.m/h) 110 cfh (2.9 cu.m/h) 110 cfh (2.9 cu.m/h) N/A
Relief Valve Setting 350 psig 350 psig 350 psig 500 psig
(24 bar/2413 kPa) (24 bar/2413 kPa) (24 bar/2413 kPa) (34 bar/3447 kPa)
Inner Container Bursting Disc 525 psig 525 psig 525 psig 750 psig
(36 bar/3620 kPa) (36 bar/3620 kPa) (36 bar/3620 kPa) (52 bar/5171 kPa)
Dual Pressure Building/
Economizer Regulator***
Pressure Building Setting 300 psig 300 psig 300 psig 400 psig
(20.7 bar/2068 kPa) (20.7 bar/2068 kPa) (20.7 bar/2068 kPa) (28 bar/2758 kPa)
Economizer Setting 320 psig 320 psig 320 psig 420 psig
(22 bar/2206 kPa) (22 bar/2206 kPa) (22 bar/2206 kPa) (29 bar/2896 kPa)
Design Specifications
TC 4LM 4LM N/A N/A
DOT 4LM 4LM 4LM 4LM
Gaseous Capacity
Based on DOT Rated Service Pressure
@ NTP (STP)
Carbon Dioxide 3383 cu.ft. (89 cu.m) 3619 cu.ft. (95cu.m) 4003 cu.ft. (108 cu.m) 3330 cu.ft. (88 cu.m)
Oxygen 4350 cu.ft. (114 cu.m) 4651 cu.ft. (122 cu.m) 5146 cu.ft. (135 cu.m) 4397 cu.ft. (116 cu.m)
Nitrogen 3478 cu.ft. (91 cu.m) 3712 cu.ft. (98 cu.m) 4112 cu.ft. (108 cu.m) 3312 cu.ft. (87 cu.m)
Argon 4236 cu.ft. (111 cu.m) 4516 cu.ft. (119 cu.m) 5012 cu.ft. (132 cu.m) 4285 cu.ft. (113 cu.m)
Nitrous Oxide 3211 cu.ft. (84 cu.m) 3429 cu.ft. (90 cu.m) 3796 cu.ft. (106 cu.m) N/A
Specifications are subject to change without notice.
* Vented N.E.R. based on Useable Liquid Capacity.
** Container pressure at or above factory Dual Pressure Building/Economizer Regulator setting.
*** Regulator has a pressure delta of 20 psig (1.4 bar/138 kPa).
XL-45HP, XL-50HP
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XL-55HP, XL-50VHP
Containers
Handling the Container
The XL Series containers are very rugged liquid cylinders. All cryogenic liquid containers
have an inner container and an outer container with an insulated vacuum space between
them. Any abuse (dents, dropping, tip-over, etc.) can effect the integrity of the containers
insulation system.
When fully loaded, the XL-55HP in argon service will contain up to 518 lb (235 kg) of
product. While moving a full container, you may be handling up to 805 lb. (365 kg), and
you should treat the load accordingly. The attachment points provided on the XL-45HP/
50HP/55HP/50VHP will allow you to use a hand truck or a hoist to handle these loads
properly. Do not attempt to move these cylinders by any other means. While moving the
cylinder, the following precautions should be observed:
q Never lay the container on its side. Always ship, operate, and store the unit in a
vertical, or upright position.
q When loading or unloading the container from a truck, use a hand truck, lift gate,
crane, or parallel loading dock. Never attempt to manually lift the unit.
q To move the container over rough surfaces, or to lift the container, attach an appropri-
ate sling to the lifting points cut into the welded support posts, and use a portable
lifting device that will handle the weight of the container and its contents.
FREIGHT DAMAGE
PRECAUTIONS
ANY FREIGHT DAMAGE
CLAIMS ARE YOUR
RESPONSIBILITY. Cryogenic
liquid containers are delivered to
your carrier from Taylor-Whartons
dock in new condition. When you
receive our product you may
expect it to be in that same
condition. For your own
protection, take time to visually
inspect each shipment in the
presence of the carriers agent
before you accept delivery. If any
damage is observed, make an
appropriate notation on the freight
bill. Then ask the driver to sign
the notation before you receive
the equipment. You should
decline to accept containers that
show damage which may affect
serviceability.
OPERATION
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The XL-45HP will store up to 165 liters of product; the XL 50HP/50VHP up to 176 liters,
and 196 liters for the XL-55HP. All four cylinders can deliver either liquid or gas. The
following component and circuit descriptions are pertinent to the operation of all the containers and should be read before attempting operation. The components may be identified on the Component Location Illustration.
XL-45HP/50HP/
55HP/50VHP
Component
Locations
Internal Vaporizer A liquid container for gas service must have an internal heat exchanger that functions as a gas vaporizer coil to convert liquid product to gas continuously during withdrawal. The XL-45HP/50HP/55HP/50VHP utilize an internal heat exchanger that is inside the vacuum space attached to the containers outer casing. It
provides a mean of introducing heat from outside the containers insulated jacket, to
vaporize liquid as gaseous product is withdrawn. The capacity of this circuit is sufficient to
vaporize at flow rates up to 350 cfh @ NTP (9.2 cu.m/h @STP). If a greater continuous
demand is put on the vaporizer, an external vaporizer should be added to properly warm
the gas and avoid malfunction, or damage, to gas regulators, hoses, and other downstream components.
Pressure Building A Pressure Building circuit is used to ensure sufficient driving pressure during high withdrawal periods. This function is actuated by opening a hand valve that
creates a path from the liquid in the bottom of the container, through the Pressure Building
Regulator, to the gas space in the top. When the pressure building valve is open, and the
container pressure is below the pressure building regulator setting, liquid taken from the
inner container is vaporized in a heat exchanger which is inside
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the outer casing. The expanding gas is fed into the upper section of the container to build pressure. The resulting process will
drive either the liquid or gas delivery system.
Pressure Building is not normally required unless container pressure drops below the gas output pressure desired. If, for example, the container pressure gauge reads 250 psig (17.2 bar/
1724 kPa), and your gas pressure requirement is 270 psig (19
bar/1860 kPa), and the pressure building valve may be opened
to build container pressure to 300 psig (20.7 bar/2068 kPa).
Economizer An economizer circuit withdraws gas preferentially from the head space over the liquid container gas that
would otherwise be lost to venting. Excess pressure in the head
space of the container is relieved by allowing gas to flow from
this area directly to the USE valve outlets while gas is being
withdrawn from the container; yet normal operating pressure is
preserved to ensure uninterrupted product delivery. The economizer is automatic and requires no operator attention.
The USE Valve This valve controls the gas outlet that allows
product withdrawal through the internal vaporizer. It has the required CGA connection that matches the gas service for which
the container is configured.
XL-45HP/XL-50HP/
XL-55HP and XL50VHP Flow
Diagram
NOTE:
The economizer and
pressure building
functions are controlled
by a single dual action
regulator. The pressure
delta between the
pressure building
setpoint and the
economizer setpoint is
approximately 20 psig
(1.4 bar/138 kPa). This
delta cannot be altered.
WARNING:
Never use the Dual
Pressure Building/
Economizer Regulator
or Relief Valve for the
XL-50VHP on any other
container.
The LIQUID Valve Liquid product is added or withdrawn from the container through the
connection controlled by this valve. It has the CGA fitting that is required for liquid line
connections. The valve is opened for fill or liquid withdrawal after connecting a transfer
hose with compatible fittings to the LIQUID line connection.
RELIEF VALVES AND RECOMMENDED REGULATOR SETTINGS
Relief Pressure Normal
Valve Building Economizer Operating
Setting Setting Setting Range
22 psig N/A N/A 0-22 psig
1.5 bar N/A N/A 0-1.5 bar
152 kPa N/A N/A 0-152 kPa
230 psig 125 psig 145 psig 75-175 psig
16 bar 8.6 bar 10 bar 5-12 bar
1586 kPa 862 kPa 1000 kPa 517-1207 kPa
350 psig 300 psig 320 psig 200-350 psig
24 bar 20.7 bar 22 bar 13.8-24 kPa
2413 kPa 2068 kPa 2206 kPa 1379-2413 kPa
500 psig 400 psig 420 psig 300-600 psig
34 bar 28 bar 29 bar 20.7-41 bar
3447 kPa 2758 kPa 2896 kPa 2068-4137 kPa
Pressure
7
Building Rates
Graph
CAUTION:
When withdrawing
liquid gas from the
cylinder, the capacity
of the internal
vaporizer can be
exceeded. If gas is
withdrawn at rates
greater than the
vaporizer capacity,
liquid or very cold gas
will be discharged.
Severe damage to
external equipment
could result from the
extreme cold.
The PRESSURE BUILDING Valve This valve isolates the liquid in the bottom of the
container to the Dual Pressure Building/Economizer Regulator. This valve must be open
to build pressure inside the container.
The VENT Valve - This valve controls a line into the headspace of the container. It is used
during the fill process. The VENT valve acts as a fill point during the pump transfer, or to
vent the head space while liquid is filling the inner container during the pressure transfer fill
through the LIQUID Valve.
The Pressure Gauge - The pressure gauge displays the internal container pressure in
pounds-per-square-inch or in kiloPascals.
The Full View Contents Gauge The container contents gauge is a float type liquid
level sensor that indicates container liquid content through a magnetic coupling to a
yellow indicator band. This gauge is an indication of approximate container contents only
and should not be used for filling; liquid cylinders should be filled by weight.
Relief Devices These cylinders have a gas service relief valve and inner container
bursting disc with settings of 350 psig (24 bar/2412 kPa) and 525 psig (36 bar/3620 kPa)
respectively for the XL-45HP/50HP/55HP and 500 psig (34 bar/3447 kPa) and 750 psig
(52 bar/5171 kPa) for the XL-50VHP. Relief valves of 230 psig (16 bar/1586 kPa) and 22
psig (1.5 bar/152 kPa) are available if medium pressure operation is desired. Alternate
pressure building regulator and economizer settings are required if medium-pressure relief valves are installed.
CAUTION:
8
Internal orifices in
pressure regulators
used with CO2 are
subject to the
formation of dry ice if
excessively cold gas
or high flow rates are
used. If this condition
occurs, an external
vaporizer should be
used to ensure the gas
is warmed before it
reaches the regulator.
WITHDRAWING GAS FROM THE CONTAINER
To withdraw gas from the XL-45HP/50HP/55HP/50VHP connect a suitable pressure regulator to the USE connection, and the output of the regulator to your external equipment.
Then open the USE connection, and the output of the regulator to your external equipment. Then open the USE and the PRESSURE BUILDING valves. When the container
pressure reaches 125 psig (8.6 bar/862 kPa), 300 psig (20.7 bar/2068 kPa) or 400 psig
(28 bar/2758 kPa) if equipped with the higher valve Dual Pressure Building/Economizer
regulator set the pressure regulator for the desired delivery pressure.
Increasing Gas Supply Capacity Two or more liquid containers may be manifolded
together. Accessory manifolds are available for use in creating a higher capacity gas
supply system. The XL-45HP/50HP/55HP/50VHP can supply gas at flow rates 1 up to
350 cfh @ NTP (9.2 cu. m/h @ STP) using only its internal vaporizer. At low flow rates, the
gas supplied will be at near ambient temperature. As the flow demand is increased, the
gas will become proportionately colder. If greater vaporizing capacity is required, an accessory external vaporizer is available. When an external vaporizer is sued, it must be
connected to the USE valve and the regulator moved to the output of the external vaporizer.
Vaporizer Performance Graph
Liquid Withdrawal
WITHDRAWING LIQUID FROM THE CONTAINER
When a container is used to supply liquid product, such as in an application as portable
distribution container for carbon dioxide, liquid may be withdrawn from the XL-45HP/50HP/
CAUTION:
To avoid
contamination, close
the LIQUID valve on
an empty container
before disconnecting
the transfer line.
55HP/50VHP.
Attach a transfer hose to the LIQUID connection and open the adjacent LIQUID valve. The
presser in the container will drive liquid product out through the valve as the container
pressure exceeds that of the receiver.
The rate of liquid withdrawal from these containers is variable depending on the gas phase
pressure and the saturation temperature of the liquid.
1
See Specifications for your application.
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