The fuel pumping that supplies the vehicles at the Petrol Stations can be accomplished in two ways: by a pump located in the supplying unit that get the fuel from the Storage Tank, or with a pump installed inside the Tank that directs the fuel pressurized.
It is important to note that the equipment used in the underground system installation will suffer changes according to the type of the pumping system selected.
One of the differences is on the HDPE Pipes, while suction systems can work with single-wall or double-wall Pipes, in pressure systems it is essential to use of double-wall pipes. When replacing the Pipes, Entry Boots with Test Valve also must be used .
Another difference is the valve installed in the dispenser. In suction systems it is possible to use both, Check Valve and Shut-off Valve, while in pressured systems must be used the Shut-off Valve, necessarily fixed in a Stabilizer Bar.
In Petrol Stations that commercialize Diesel, the Diesel Press Filters normally used in suction systems, must be replaced by Line Filters in the pressure systems.
Another point of attention in pressure systems are the Flexible Connector, which must be tested to withstand the working pressures of this type of system, ensuring the life of equipment.
For more information on submersible pump installations or to clarify other questions about installation and maintenance, contact the Zeppini Ecoflex team.