Specifications

Subject to change – 2015/03
28
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Valve terminals MPA-L
Key features – Assembly
Tie rod – Components and design
Tie rod (threaded rod) Tie rod extender Sleeve Screw
The threaded rod is used to create a
cost-optimised fixed-grid tie rod. The
threaded rod is required with valve
terminal lengths exceeding
42.45 mm, for example at least four
sub-bases (10.7 mm each), since only
the combination of a threaded rod
and sleeve offers the optimum
compensation of tolerances (by
compressing the seals between the
sub-bases).
The valve terminal can be extended
almost infinitely using tie rod
extenders.
The tie rod extenders are inserted
between the threaded rod and sleeve
and are available in appropriate
lengths for sub-bases and supply
modules.
The primary purpose of the sleeve is
to compensate tolerances that occur,
for example, when the seals are
compressed between the sub-bases
during assembly.
The sleeves come in different lengths,
tailored to the use of a tie rod in a
fixed grid as well as generally for the
modular tie rods.
The entire valve terminal is clamped
via the tie rod using screws.
Tolerances that occur, for example,
when the seals are compressed
between the sub-bases during
assembly, are compensated by the
interaction of the screws and sleeve.
Individual modular tie rod
Tie rods can be made entirely using tie
rod extenders. The threaded rod and
sleeve are required to compensate
tolerances that occur, for example,
when the seals are compressed
between the sub-bases during
assembly.
Fixed-grid tie rod with extension
The tie rod extenders are inserted
between the threaded rod and sleeve.
They are available in suitable lengths
for sub-bases and supply modules.
Fixed-grid tie rod
The fixed-grid tie rod minimises
assembly costs when assembling
previously defined valve terminals.
These valve terminals can be
extended at any time.
The threaded rod (and if applicable
also the sleeve) must be replaced if
the valve terminal length is reduced.
Short valve terminal
Valve terminals with a small number
of valve positions are created by
means of the following combinations:
Width 10 mm
 Valve terminals with two valve
positions and without a supply
module are connected solely using
screws
 Valve terminals with three valve
positions and without a supply
module (or with one valve position
and one supply module) are
connected using a 10 mm tie rod
extender and screw
Width 14 mm
 Valve terminals with two valve
positions and without a supply
module are connected using a
10 mm tie rod extender and screw