VAG Installation and Operating Instructions • 4
Picture 2: Standart Version
EROX
®
plus
Picture 3: EROX
®
plus
with
open frame
Top
traverse
Frame
Stem
Stem nut
Gate
Retainer
Wall seal
Picture 4: EROX
®
plus design
and positioning of the cables/belts must ensure that the Penstock
is in a vertical position during the entire lifting procedure.
For Penstock that have been factory-packed in transport crates
(wooden crates), the centre of gravity of the entire unit must be
taken into account.
2.2 Storage
The VAG EROX
®
plus
Penstock must be stored lying flat on its rear
side.
The elastomeric parts (seals) must be protected against direct
sunlight and/or UV radiation as otherwise their long-term sealing
function cannot be guaranteed. Store the Penstock in a dark, dry
and well-aerated place. The direct exposure of the Penstocks to
radiation heat emitted by sources of heat should be avoided. Pro-
tect any assembly units important for proper function such as the
stem, stem nut, sealing ring or gate against dust and other dirt by
adequate covering.
The Penstock can be stored in ambient temperatures ranging
from -20 °C to +50 °C (protected by adequate covers). If the Pen-
stock is stored at temperatures below 0 °C, it should be warmed
up to at least +5 °C before installation and before it is put into
operation.
3 Product features
3.1 Features and function description
The VAG EROX
®
plus
Penstock is a shut-off and modulating valve.
It seals pipelines or openings in constructions up to a pressure
(depending on the nominal diameter) of 10 m water column (1.0
bar). The pressure-rate is valid for both direction.
The following pressure ratings apply for the standard versions:
DN 150 to DN 300:
up to 10 m WC (1.0 bar)
DN 400 to DN 800:
up to 8 m WC (0.8 bar
DN 900 to DN 1200:
up to 7 m WC (0.7 bar)
above DN 1200: up to 6 m WC (0.6 bar)
As a standard, the VAG EROX
®
plus
Penstock is available in nomi-
nal diameters from DN 150 to DN 1200 in the following versions:
• for flange connection (F)
• with smooth surfaced bottom seal (G)
• The VAG EROX
®
plus
Penstock is available in two basic versi-
ons
Standard version EROX
®
plus
(Picture 2) with closed frame, com-
pact valve, ready for assembly, with non-rising stem and integra-
ted stem bearing. This version should preferably be used for non-
submerged installation as the sensitive components moving in
relation to each other (stem, stem nut and stem bearing) are ar-
ranged directly on the Penstock. In submerged installation, they
would come into direct contact with the medium and be difficult
to service. Also, the soiling of the operating components increa-
ses the operating torques and may even lead to the Penstocks
not being operable any more, which means increased wear and
tear and a shorter useful life.
Special version EROX
®
plus
-O (Picture 3) with open frame. This
version is also delivered ready for assembly and especially serves
as basic version for all solutions with rising stem. This version
should preferably be used for submerged installation, as in this
case the sensitive components moving in relation to each other
(stem, stem nut and stem bearing) are arranged at the same level
as the actuator (handwheel, electric actuator or gear box). In sub-
merged installation, these components are located outside the
medium, are therefore easily accessible at any time and can be
easily serviced. Contrary to the standard version described abo-
ve, the EROX
®
plus
-O type with rising stem has constantly low
operating torques and little wear of the actuating components.
The VAG EROX
®
plus
Penstock has a sturdy, torsion-resistant
frame construction. It remains dimensionally stable when the
Penstock is mounted to walls (of evenness within the tolerances
of DIN EN 18202).
The wide tolerance wall seal reliably compensates any permissib-
le unevenness of the wall. In the standard version shown, the
stem runs on slide bearings located in the top traverse of the
frame. When the stem is turned via the stem nut, the gate is mo-
ved up or down. The gate runs safely and backlash-free in the la-
teral frame sections.
The VAG EROX
®
plus
Penstock has some advanced technical fea-
