OPERATING MANUAL
07-2021
7/11
4.
STORAGE & TRANSPORT
The products are packed
on EURO pallets (1200x800 mm) or in custom containers, as applicable. Store the valves
in
clean indoor rooms
without bacteriological
or chemical contaminants and at a room temperature between -20
°
C
and 70
°
C. Protect the paint coat and rubber parts from
prolonged exposure to UV radiation. Protect the filters
against mechanical damage.
Do not compress any rubber parts. Keep the valve closure plate halfway open. Secure the products against shifting
during shipping and handling. Heavy valves (DN350 and larger) shall be handled with dedicated eye bolts; valve
sizes from DN80 to DN300 shall be handled on slings and secured from rotating. Do not handle by the lever, the
gearbox handwheel, or the operator/gearbox housing.
5.
INSTALLATION
P/N 4495 and 4497 flange-to-flange cast iron valves and P/N 4496 flange valves can be installed in underground
or overground pipelines both in horizontal or vertical orientation. The listed products are suitable for joining with
the flanged ends of pipelines with the size equal to that of the valve flanges. P/N 4495 and 4497 do not require
additional gaskets between the piping valve flanges, while P/N 4496 requires additional gaskets between the
flanges.
Note that the completed installation must not expose the valve to bending or tensile stress from loading with the
unsupported pipeline sections. Install the product properly aligned with the piping centreline and with proper
parallelism and flatness of the mating connection flanges, with prevention of hydraulic shock, and with due
compensation of the pipeline dimensional changes from temperature and pressure. A valve is ready for installation
in the system as assembled and adjusted by the manufacturer. Any dismantling of the valve components (e.g. the
shaft, the closure panel, or sleeves) may result in loss of seal.
The requirements for correct quality of the mating flanges have to be satisfied, that is flatness and parallelism,
during the installation process. During the installation process, do not leave any installation tools, bolts, nuts, or
welding wire inside of the piping or they can stop at the end seal (the rubber insert) or within the closure panel of
the valve. This may lead to damage during closing of the valve and loss of seal across the valve. The valve sealing
is provided by an elastomer liner all over the inside of the body, and respectively:
•
At the closure panel, by compression of the liner between the closure rim and the valve body;
•
At the shaft(s), by compression of the closure panel faces and the snug fitting of the shaft(s) to the holes
in the liner;
•
At the flanges, by compression of the liner by the piping flanges.
The manufacturing tolerance of the valves and their components are large enough to ensure full interchangeability.
The user carries out the installation of the valve in the pipeline on his or her own accord.
Use proper intrinsically safe tools and avoid all actions which may generate sparks during all repair and
maintenance work. Before attempting to install the valve, check the technical and commercial documents delivered
with the product to verify that your media and pipeline operating parameters comply with the manufacturer's
declaration.
If the valve is installed at the end of piping, mount a steel or cast-iron stub pipe on the free end of the butterfly
valve to guard the closure panel during opening. The stub pipe is not included. The lug valves can be installed as
piping termination without any extra stub pipes.
All concentric butterfly valves in the size range of DN40 to DN250 can be installed in horizontal or vertical
orientation (of the pivot shaft relative to the piping centreline) (Fig. 2). The valve in the size range of DN300 to
DN1200 can only be installed in horizontal orientation of the pivot shaft relative to the piping centreline. The
valves in the size range of DN200-DN250 can only be installed in vertical orientation and in diagonal piping after
prior consultation with and approval from the manufacturer. The valves larger than DN250 must never be installed
with the closure pivot shafts upright in the standard version. If the valve needs to be installed with the valve closure
pivot shafts upright, specify this in the purchase order.
