OPERATION AND MAINTENANCE MANUAL
01-2016
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1. Coupling, 2. Pipeline flange, 3. Seal, 4. Fastening bolt, 5. Nut, 6. Washer
4.3 OPERATION
Inspection couplings with hydrant valve type 8890 shall be used in accordance with the requirements for
isolating valves. It is recommended to periodically purge the coupling with fresh water (once a year) to assure
full performance.
For servicing, shutoff valves shall be installed upstream and downstream the coupling. The installation
location shall enable free access to the coupling for servicing and maintenance on the system.
The coupling cannot be situated in a location subject to flooding. The device shall not be subject to
temperatures exceeding the allowable scope of work.
Exceeding the operating limits of the fitting may result in damage that will not be covered by the
suretyship granted by the manufacturer.
4.4 OH&S REGULATIONS
The inspection couplings are eligible for the OHS guidelines and recommendation concerning installation of
pipelines and devices for: water supply stations, heat power plants, water treatment plants, sewage treatment
plants, pumping stations and other facilities, and eligible for the Polish Regulation concerning general OHS laws
(use of personal protective equipment for hands, legs and head, and safety garment), especially at work with low
or high temperature hazard.
Misuse of this product is prohibited.
5 GUARANTEE CONDITIONS
The manufacturer grants guarantee for the product being installed and operated according to this O&MM.
The conditions and period of the guarantee is specified in the guarantee sheet.
