OPERATION AND MAINTENANCE MANUAL
01-2016
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3.4 TRANSPORT
Transport the couplings on sheltered vehicles.
Use slings sized from DN80 to DN250 for transport and installation of couplings.
4. ASSEMBLY AND INSTALLATION
4.1. INSTALLATION GUIDELINES
Inspection couplings with hydrant valves type 8890 can be installed in above-ground pipelines in horizontal
orientation, configured as shown in the following figure. The couplings 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
coupling 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. A coupling
assembled and delivered by the manufacturer is ready for installation in the system. Disassembly of the coupling
components without proper care may result in loss of tightness.
4.2 INSTALLATION INSTRUCTIONS
Before installing the fittings, check the technical and commercial documentation, i.e. application for media
and operation parameters of the pipeline, in which they are to be installed. Any change in the operating
conditions must be consulted with the fitting's 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.
Note! If the product is damaged mechanically, do not install it in the pipeline.
The assembly method is shown in the following figure:
