The McAlpine SMP10V 50mm Water Seal Anti-Syphon (Silentrap) with 1½" Multifit Outlet Bath Trap is a plumbing fitting made by McAlpine that is used for bath installations. The SMP10V trap features a 50mm water seal and an anti-syphon valve, which prevents water from being siphoned out of the trap and into the drainage system. The trap also includes a 1½" multifit outlet, which can be used with a variety of different pipe sizes and types. The SMP10V trap is designed to be used in bath installations, where it is important to prevent blockages and other plumbing issues. The trap captures debris and other materials before they can enter the main drainage system, and the anti-syphon valve ensures that water remains in the trap, even during periods of high flow. Overall, the McAlpine SMP10V 50mm Water Seal Anti-Syphon (Silentrap) with 1½" Multifit Outlet Bath Trap is a specific plumbing fitting that is used in bath installations to prevent blockages and other plumbing issues. Its design features a water seal, anti-syphon valve, and multifit outlet, and its inclusion of all necessary components makes installation quick and easy. ・ 50mm Water Seal ・ 1½" Multifit Compression Outlet suits all plastic, copper and lead pipe ・ Anti-Syphon Valve neutralises negative syphonic pressure and eliminates gurgling ・ Suitable for Use with McAlpine Bath Wastes ・ Manufactured in polypropylene