BT- 434 Rev.A
17
OPERATION
Withdrawing Gas
Filling by Pump Transfer
Filling for Road Transport
1.
Visually inspect the MB-450, transfer hose, and bulk tank piping. Do not attempt to fill the unit if
any components are broken or missing.
2.
Connect a transfer hose from the bulk tank to the liquid connection (CN-1).
3.
Open the liquid valve (V-1) and vent valve (V-2) to begin the fill.
4.
When liquid issues from the vent valve, the vessel is full. A 10% gas head space will remain above
the liquid. Close the liquid valve (V-1).
5.
Once liquid stops issuing from the vent valve (V-2), close the vent valve.
6.
Close the liquid source supply valve and open the transfer hose dump valve.
7.
Disconnect the transfer hose from the liquid connection (CN-1).
When a pump is used to fill the container, the pump / top fill connection (CN-3) should be used. Closely
monitor the vessel pressure during the fill. If the vessel pressure approaches the relief valve setting
or the pump pressure rating, shut down the pump. Open the vent valve (V-2) to reduce pressure as
needed.
When filling using the Taylor-Wharton Express truck in automatic mode, the fill is stopped at a level
providing an adequate gas head space.
When using a traditional pumping system, the vent valve (V-2) should remain open during the fill. Moni
-
tor the product exiting the vent valve closely. When liquid issues from the vent valve (V-2) immediately
stop the pump. Once liquid stops issuing from the vent valve, close the vent valve.
The DOT-4L design vessels may be transported over the road while containing product. When filling
these vessels for transport, it is recommended that they be placed on a scale during the fill. The
weight of the contents should not exceed the maximum weight allowed by the DOT (Department of
Transportation).The weight of contents can be found on the Specifications page.
The vessel tare weight, labeled TW, can be found on the nameplate located on the upper head of the
vessel jacket. Add the weight of contents for the appropriate vessel design and gas service to the
tare weight of the vessel. The weight of the full vessel must not exceed the sum of the tare weight
and weight of contents.
To withdraw gas from the MB-450 connect a suitable line regulator to the gas withdrawal connection
(CN-4). Connect the outlet of the regulator to the application. Follow these steps:
1.
Close the isolation valve (V-5) for the 22 psig relief valve (SV-2) if so equipped.
2.
Open the pressure building valve (V-4). Monitor the pressure gauge (PI-1). When the pressure
exceeds the desired delivery pressure, continue.
3.
Open the gas withdrawal valve (V-3).
4. Adjust the line regulator to desired delivery pressure.