Page 1 INSTALLATION, OPERATING AND MAINTENANCE MANUAL UNIFLOW® 8F DOUBLE BLOCK & BLEED MO- NOFLANGE GLOBE VALVES Contents 1. GENERAL INFORMATION ON THE MANUAL ....2 5. INSTALLATION ...............3 2. NOTES ON POSSIBLE DANGERS ........2 5.1 General remarks on installation ........3 2.1 Significance of symbols ..........2 5.2 Requirements at the place of installation ....4 2.2 Explanatory notes on safety information .....2 6.
Page 2 1. GENERAL INFORMATION ON THE MANUAL - This Manual provides information on safely using the product, being binding for preservation, storage, handling, transport, installation, commissioning, operation, maintenance, repair and disposal, and must be thoroughly observed at any step. - Please contact the supplier or the manufacturer in case of issues which cannot be solved by reference to this Manual. - Any deviation from this Manual and sound engineering practice or modification on the product shall be notified to manu- facturer for advice or approval. - In addition, regional safety requirements must be always applied and observed at any step. - All the work related to the product must be carried out, supervised and inspected by specialist personnel. It is the owner’s responsibility to define areas of responsibility and competence and to ensure the proper monitoring. - This Manual is in accordance with Directive 2014/68/EU on Pressure Equipment (PED) and Machinery Directive 2006/42/EC. - For ATEX applications, please refer to ATEX Specific instructions. - The manufacturer reserves the right to make technical modifications at any time. 2. NOTES ON POSSIBLE DANGERS 2.1 Significance of symbols ATTENTION! Warning of general danger.
Page 3 psig ºF psig -Y.20VV: M ºF II 2 D - Ex h IIIC TX ºC Db II 2 G - Ex h IIB TX ºC Gb II 2 D - Ex h IIIC TX ºC Db ºC ºC -VVZZZZZ psig ºF psig ºF...
Page 4 ATTENTION! - When using the valve as an end seal, the employers’ liability insurance association of the gas and waterworks specifies the use of a safety precaution such as a plug-in disc, blind flange, etc. With a medium jet that freely exists, you must secure the exit area.
Page 5 6. COMMISSIONING & OPERATION ATTENTION! - Before commissioning the valve, check the material, pressure, temperature and other essential parameters. Always use the product within the scope of intended service and operating duties. - Before commissioning, make sure previous chapters are thoroughly followed. - Regional safety instructions should be adhered to.
Page 6 8. TROUBLESHOOTING In the event of malfunction or faulty operating performance, check that the installation and adjustment work has been ca- rried out and completed in accordance with this Manual. ATTENTION! - It is essential that the safety regulations are observed when identifying faults. 9. TROUBLESHOOTING TABLE ATTENTION! - Read the complete Manual before carrying out installation and repair work. - Read chapter 6 before recommissioning.
Page 7 10. DISMANTLING THE VALVE OR THE TOP PART ATTENTION! The following points must be observed: - Pressureless pipe system. - Medium must be cool. - Plant must be drained. - Note chapter 3 for proper handling and lifting. - Additionally, in case of toxic, corrosive, flammable or caustic media: - Purge pipe system carefully.
Page 8 13. PARS LIST UNIFLOW® 8F Nº PART Body Disc Gasket Cover Packing Stem Packing ring Gland flange Bolt Yoke Vent Plug 1/2” Updated documents on www.comeval.es COMEVAL VALVE SYSTEMS, S.L. y CIA., Soc. Comanditaria Les Rotes, 15 46540 El Puig (Valencia) España Phone +34 961 479 011 · Fax +34 961 472 799 E-mail comeval@comeval.es - www.comeval.es Page 8...

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