The Waterco Micron SM 1-1/2 inch bulkhead assembly is designed for compatible Micron SM applications where the main pass-through plumbing connection needs replacement. A bulkhead assembly is useful because it creates a secure interface through a tank or housing wall while supporting proper fit and sealing at one of the assembly’s most important connection points.This replacement is especially useful when the original bulkhead is cracked, leaking, worn, or no longer trustworthy during normal service. Replacing the full assembly can often deliver a cleaner and more dependable result than attempting to reuse compromised components.The W04005BLK is a strong service part when a compatible Waterco Micron SM system needs its 1-1/2 inch bulkhead connection restored correctly. Waterco Micron SM 1-1/2 inch bulkhead assembly Designed for compatible vessel-wall plumbing connections Helps restore secure fit and sealing at the bulkhead point Useful when the original bulkhead is cracked or leaking Supports a more complete structural repair