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LPG Transfer Pumps, as the
name implies, are used to transfer LPG from the storage tanks to the
vaporizer. In systems with venturi LPG/air mixing systems, they are also
responsible for maintaining the pressure needed for optimum and efficient
function of the venturi tubes.
All pumps are mounted on steel skids, and are primed
and painted. They are equipped with constant pressure regulator, strainer,
isolation valves, by-pass loops ("Summer-Bypass"), liquid filled pressure gauges, and any
other components required for safe operation.
Smaller pumps up to 16 GPM are for single phase AC 115/230 V service.
Larger pumps are for 3-phase AC 230/460 V and require external motor
starters. Pumps up to 29 GPM are direct-drive pumps (electric motor
directly coupled to pump). Larger pumps are belt driven.
All pumps are of "positive displacement" design and use rotary vane pumps with a built-in over-pressure relief valve, designed for continuous use with high reliability.
A back pressure regulator provides stable delivery pressure by returning excess pump capacity to the storage tank.
All systems are supplied with an explosion proof motor to meet Class I, Division 1, Group D requirements.
Magnetic motor starters can be supplied either as a separate component,
installed on the pump skid, or integrated with the system controls. If
integrated with the system controls, a Start/Stop station at the pump
skid is provided for local pump control. When sizing a
pump system, the nominal pump capacity should be approximately twice the
nominal capacity of the LP or LP/Air system. All AES
pump systems are available with Blackmer pumps or with Corken pumps, and
can be configured for various voltages and for 50 Hz or 60 Hz.
Dual Pump Systems are manufactured with
bypass and isolation valves that allow to use pumps in any combination:
Pump 1, Pump 2, or Pump 1 and Pump 2 together. |
