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The plunger pumps of the SEKO E
Exacta Series are the ideal choice
for applications with harmless liquids.
They are simple, easy to maintain,
highly accurate and very reliable.
The plunger and packing are wetted
by the medium. It is this very
important to select suitable materials
to ensure the best performances.
Should a special execution nonstandard
model be required, our
experience of more than 40 years
gives us the know-how to design a
customized solution.
2 process & systems division > plunger piston pumps with mechanical return mechanism
Mechanism EXACTA®
E Exacta Series
The mechanisms of the E Exacta Series have been designed
conforming to API 675 Standards. Three sizes of increasing
power are available. Oil bath lubricated, very compact and
rugged, designed for continuous and heavy-duty operations.
The stroke length is adjustable from zero to the maximum
manually or, on request, by means of an electric servomotor
or pneumatic positioner; the set adjustment can be read on a
dial indicator. Multiheaded units can be assembled by
combining mechanism of the same or different sizes.
Gearboxes are available with different reduction ratios for an
accurate selection of the performances.
Steady state accuracy, repeatibilty and
linearity:
in accordance with API 675 standards.
Flexibility:
Assembling of mechanisms of the same or different sizes.
Drive
The standard execution includes the coupling to an electric
motor at fixed or variable speed or flame proof execution.
Other options: NEMA Standards motors, D.C. motors,
mechanical speed variators, frequency converters (VCD).
Stroke length
adjustment
It operates at pump running or at rest
and includes a blocking device suitable to
fix the selected flow rate.
Manual adjustment:
The clockwise allows the continuous
stroke adjustment with the pump running
or at rest. A blockage system fixes the
rated flowrate.
Actuator:
Control signal: IN/OUT signal 4÷20 mA.
Profibus® signal available.
It includes include few non common
characteristics such as: stroke limiters,
overload protection, feed back signal,
position indicator, flame proof execution;
any component to be installed inside the
control panel.
Pneumatic positioners:
Control signal: 0,2÷1 bar (3÷15 p.s.i.)
Profibus® signal available.
Option: I/P converter from 4÷20 mA to
0,2÷1 bar (3÷15 p.s.i.)
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