OPERATION AND MAINTENANCE MANUAL
12-2016
8
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 (see the example diagram below) and
secured from turning.
Never suspend the valve by its drive actuator when handling.
DN350>
DN40 to DN300
4 ASSEMBLY AND INSTALLATION
4.1 ASSEMBLY GUIDELINES
The TYPE 2902 and TYPE 2911 drive-ready flanged gate valves with soft seals can be installed in
underground or surface 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 (gate) valve to bending or tensile stress from loading with the weight of 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 drive actuator, follow the OHS requirements specified in the actuator
operation and maintenance manuals.
4.2 ASSEMBLY INSTRUCTIONS
Before attempting to install the valve, check the technical and commercial documents delivered with the
product to verify that the media and pipeline operating parameters comply with the manufacturer's declaration.
Any change in the operating conditions must be consulted with the valve manufacturer beforehand.
Before attempting to assemble the valve, remove the main bore plugs, check the inner surfaces of the
valve and thoroughly flush with water, if necessary.
CAUTION! If the product is damaged mechanically, do not install it in the pipeline.
Before commissioning the valve with the drive actuator and during the connection and adjustment of the
drive unit, verify the electric connections and fire protection according to the technical manual from the
drive actuator manufacturer.
