OPERATION AND MAINTENANCE MANUAL
09-2015
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3.4 TRANSPORT
Transport the gate valves on sheltered vehicles. Heavy gate valves (DN350 and larger) shall be handled
with the integrated handling pieces made of eye bolts; the gate valves from DN40 to DN300 shall be handled on
slings. Never suspend the valve by its pneumatic actuator when handling.
4 ASSEMBLY AND INSTALLATION
4.1 ASSEMBLY GUIDELINES
Type 2901 and 2903 flange-to-flange wedge gate valves with soft seals and a pneumatic linear actuator
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.
Note that the system must not expose the valve to bending or tensile stress from loading with the unsupported
pipeline sections.
It is recommended to perform installation works considering pipeline compensation due to temperature
and pressure. The valve assembled and adjusted by the manufacturer is ready for installation. Any dismantling of
the valve components may result in loss of seal. When installing the gate valve with its actuator, follow the OHS
requirements specified in the actuator operation and maintenance manuals.
