The McAlpine SMP10V 50mm Water Seal Anti-Syphon (Silentrap) with 1½" Multifit Outlet Bath Trap is a plumbing fitting designed for bath installations. It features a 50mm water seal and an anti-syphon valve to prevent water from being siphoned out of the trap. The trap also includes a 1½" multifit outlet compatible with various pipe sizes and types. This trap captures debris before it enters the main drainage system, and the anti-syphon valve ensures water remains in the trap, preventing gurgling. It is suitable for use with McAlpine Bath Wastes. Manufactured in polypropylene.