The T&S 009178-40 24" Knuckle Riser Assembly is the essential structural component for commercial kitchen pre-rinse systems, providing stability and durability to pipework. Designed to secure to the wall behind your sink, this riser features a swivel end that allows the sprayer head to move freely between sinks, improving efficiency in high-volume kitchens. Its 23 3⁄4" length and 3/8-18 NPT male threading ensure precise compatibility with standard pre-rinse assemblies. Built with a plated tube, spring, and set screws, this part is engineered to withstand the demands of professional kitchen environments. Whether you're maintaining an existing system or upgrading your restaurant equipment, this riser is a reliable choice for durability and performance.