EMERSON Guide Globe Valves, Fasani-EN Manual

FASANI Globe Val Ves Cast Globe Val Ves, Y and t pattern

operating and safety Instructions

WARNING! INSt All At ION 11. all valves must be partially opened prior to For safety reasons, it is important to take the welding. following precautions before you start to work on 1. Install the valve so that the arrow applied 12. Pipeline flushing: valve materials are the valve: on the valve body corresponds to the flow usually resistant against pickling fluids 1. Before installing, operating or maintaining the direction of the line (consult the general (as the pipe material is). If required, check valve, read all labels fitted to the valve and the drawing). resistance to pickling with the pickling present document. 2. Unless differently stated on the valve company.If necessary, disassemble valve 2. Use valves only for the intended purpose General arrangement Drawing, installation internal parts and replace them with special (according to contract). may be carried out with the stem oriented at pickling inserts. Protect sensitive places 3. Any additional modifications and/or an angle between +/- 40° from vertical. with paint or cover plates. accessories mounting on valves are not 3. Globe valves can be installed on horizontal allowed without approval from our technical or vertical pipelines. NOt E department. 4. Remove protective covers from valve end Damage may occur to the valve (i.e. to the valve 4. Personnel making any adjustments to the faces and any transportation protection seats) during high speed flushing operation, caused valve should use equipment and clothing applied to the valve stem (if applicable). by particles that could be present in the line. For this normally used to work with the process where 5. It is responsibility of the customer, reason, it is recommended to arrange the valve in the valve is installed. depending on the installation, to arrange open position and not to perform any other actions 5. The line must be depressurized, drained, for a proper support for the valves and/or during pickling and flushing. The pickling process vented and cooled down before installing the the actuator, in particular for valves with must take place without interruptions to prevent valve. pneumatic actuators. unnecessary impingement due to the pickling fluid. at 6. Handling and installing of valves, operators 6. For flanged valves ensure that coupling the end, remove pickling fluid completely. Check with and actuators must be carried out by qualified flanges and gaskets are clean and particular care the dead spaces in the valves and the personnel. undamaged. For buttweld valves ensure interstices between pipe sections (perform inspection 7. Ensure the valve materials of construction and that the weld profile is clean and in suitable if necessary). pressure/temperature limitations marked on condition for welding. Replace gaskets and gland packing which have been the identification label are above or equal to 7. should there be any possibility of abrasive in contact with the pickling fluid. Carefully clean service conditions for which the valve has been particles (welding residues, sand, chemical sealing areas before replacement. designed. cleaning residues etc.) within the piping 8. It is possible that some cavities within the system, this could damage valve seating. 13. Check gland/pressure bolts before valve body may contain some water pockets, The system needs to be thoroughly flushed operating the valve(during start up, or even for example after hydrostatic test. If the and cleaned prior to operation. in service, the bolt tension may decrease). water pockets are not drained and the valve 8. If valve ends are flanged, ensure that the 14. In case of operating temperatures above is subject to a temperature gradient, it is valve flanges and pipe flanges are aligned 200°C (392°F), thermal insulation of the possible that the internal pressure may correctly; bolting should be easily inserted valve body is recommended. exceed the valve allowable pressure rating. through mating flange holes. Tighten the 15. In case of insulation the valve bonnet/gland Where such a condition is possible, it is the flange bolts using the crossover method. must be maintainable. responsibility of the purchaser to provide, 9. Install the valve in the pipework ensuring or require to be provided for any design, easy access to the operating mechanism installation, or operating procedure to assure (Handwheel, actuator) if applicable, and that the pressure in the valve will not exceed ensure a stress-free installation at the valve that allowed by the pressure rating of the ends. valve. 10. Welding and thermic treatment temperature 9. Check correct electric connection of actuator if limitations for the valve will be stated any. Wrong connection may cause danger and on the general arrangement drawing (if heavily damage the valve. applicable). Consideration must be given to 10. If the actuator is required to be repositioned on both these limitations and those indicated the valve, it is necessary after this operation to on the valve nameplate. Preheat / local recalibrate the limit switches (this operation thermic treatments must be performed in is described in the actuator maintenance accordance with the relevant WPs/PQR and manual). Non-calibrated actuators may they are under complete responsibility of become dangerous and may cause irreparable the customer. damage to the valve.

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