The Krowne Metal 21-185L is a specialized shower pattern valve designed for use with the 21-129L spray head. This valve effectively converts the knife pattern spray into a more versatile shower pattern, enhancing functionality and performance. Crafted for durability and ease of installation, it ensures a seamless integration into your pre-rinse faucet system. Ideal for commercial kitchens, this accessory improves rinsing efficiency and water coverage, making it an essential addition to your setup.