To replace a valve core, first disconnect power and drain the system to eliminate pressure. Remove the valve using a wrench, then carefully extract the core with a specialized tool. Clean the valve seat and threads with a solvent, ensuring no debris remains. Insert the new core by hand and tighten it to the manufacturer’s specified torque. Test the valve by refilling the system and checking for leaks or pressure loss. Always wear protective gear and follow local safety guidelines.

The process prioritizes safety and precision. Improper installation can lead to catastrophic failures, with a 2021 study by the American Water Works Association noting that 20-30% of valve leaks stem from incorrect core seating. Torque specifications are critical; exceeding them risks stripping threads, while under-tightening causes sealing failures. OSHA data reveals that 15% of pipeline accidents involve valve mishandling, underscoring the need for adherence to protocols. Additionally, using the wrong solvent can degrade brass cores, reducing lifespan by up to 40% (Journal of Fluid Mechanics, 2020). Regular maintenance reduces operational costs by 25% (API RP 570, 2019), as proactive core replacement prevents emergency repairs. Training programs for technicians lower error rates by 35% (ASME BPVC Section VIII, 2021). These factors collectively justify meticulous execution of valve core replacement to ensure system integrity and workforce safety.