Item 21 - Flow Control Valve Maintenance, Rehabilitation, and Replacement at City Water

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CITY OF SANTA ANA RFP NO.: 24-050 FLOW CONTROL VALVE MAINTENANCE PROGRAM Preventative maintenance should consist of, but is not limited to the following: a. Removal of lime deposits/mineral buildup from the valve stem and other metal parts b. Inspect parts (diaphragm, pilot valves, disk plate, solenoids, valve body, tubing, anti -cavitation parts (knock -outs), etc.) c. Calibrate pilot control settings (pressure and flow, altitude valves, etc.) d. Maintain and clean the strainers and valve body e. Exercise the valves f. Check the pilot tubing for leaks g. Inspect pilot disc retainers h. Confirm that the diaphragm assembly is properly functioning Preferably, preventative maintenance should be accomplished without removing the valve from the line. However, if removal of the valve is required, the Contractor shall notify City staff prior to performing the work. Upon completion of inspection and maintenance services, the Contractor shall also ensure all tags and/or reference markers on valves and appurtenances are up to date with the most accurate information such as model number, serial number, etc. In the event, the Contractor encounters outdated valves in need of replacement, the Contractor shall recommend retrofitting old valves with up to date new valves that meet or surpass industry standards. Within ten (10) business days of completing maintenance services on the City's Cla-Val's, the Contractor shall provide a service report to the City of Santa Ana. The Contractor shall follow up with City personnel and notify City staff on any issues encountered in the field regarding requiring additional parts. The Contractor shall state all findings, if any, along with a proposed scope of work and complete cost estimates for any recommended equipment repairs and/or replacement. II. REPAIR SERVICES (BID ITEMS 4-9) The Contractor shall repair or replace any parts of the valve found to be worn or otherwise in need of replacement. All internal parts of the valve shall be cleaned of mineral deposits prior to reassembly of the valve. When required (typically every 5 years), complete valve rebuilds/rehabilitations should be performed in which the main valve and its respective pilot controls are cleaned internally, all rubber parts are replaced, and all metal parts replaced where needed. All repairs and rehabilitations shall be made in accordance with Cla-Val guidelines and as directed by the City. The Contractor shall be factory trained in maintaining all piloting systems offered by Cla-Val and shall fix/repair all piloting systems in accordance with Cla-Val guidelines and as directed by the City. Work under this section shall also include full valve replacement complete with all necessary pilot systems and/or electronic controls. Valves listed in Appendix A are representative of the majority of the Cla-Val valves in use in the City but is not a complete listing. The City acknowledges that additional costs will be incurred for City of Santa Ana RFP 24-050 Flow Control Valve Maintenance and Rehabilitation Services Page 15