The Waterco Baker Vertilever valve piston assembly is designed for compatible valve applications where the main moving piston section needs replacement. A piston assembly is useful because it is one of the central functional parts responsible for the valve’s controlled movement and flow-routing behavior.This replacement is especially useful when the original piston is worn, damaged, sticking, or no longer moving with the precision the valve needs. Replacing the full piston assembly can often restore more confidence in valve operation than trying to salvage worn internal components individually.The 31B0005 is a strong service part when a compatible Baker Vertilever valve needs its main internal working assembly renewed for better performance. Waterco Baker Vertilever valve piston assembly Designed for compatible internal valve movement service Helps restore proper piston-based valve operation Useful when the original piston is worn or sticking Supports a more complete internal valve rebuild