To replace a valve core in a vegetable sink, begin by shutting off the water supply and draining excess water. Use pliers to loosen and remove the old valve stem, then clear debris from the seat. Insert a new valve core, ensuring it aligns properly with the seat. Tighten the stem and test for leaks by running water. Always use a wrench for the supply lines to avoid damage.

Replacing the valve core prevents water leaks and ensures efficient operation. According to the Environmental Protection Agency (EPA), household leaks can waste over 1 trillion gallons of water annually in the U.S., equivalent to the annual water use of 11 million homes. A faulty valve core contributes significantly to this waste, with a single dripping faucet losing 3,000 gallons per year (EPA, 2022). Additionally, the U.S. League of Savings estimates that water leaks account for 10% of household water bills, costing homeowners an average of $100 annually. Regular valve core maintenance reduces repair costs, as a damaged core can lead to $200–$500 in replacement expenses if ignored. Data from the American Water Works Association (AWWA) shows that 30% of water main breaks stem from aging infrastructure, including valve failures. Upgrading the valve core extends sink lifespan and aligns with sustainability goals, as proper maintenance lowers energy and water consumption. For vegetable sinks, which require frequent water use, a functional valve core minimizes downtime and operational inefficiencies, ensuring consistent performance in commercial or heavy-duty settings.