The McAlpine C10AV-SV is a bottle trap designed for use in plumbing systems. It features a water seal and an anti-syphon design, which helps prevent odors and harmful gases from escaping into the home. The 75mm water seal is a standard size for bottle traps, and the trap itself is adjustable to fit a range of installation requirements. The Silentrap feature refers to the silicone non-return valve, which helps prevent water from flowing back into the trap and causing siphoning or other issues. This valve also helps reduce noise and vibrations in the plumbing system. The McAlpine C10AV-SV bottle trap has a multifit outlet, meaning it can be used with a range of waste pipe sizes and materials. This makes it a versatile choice for many plumbing installations. Overall, the McAlpine C10AV-SV is a high-quality bottle trap that offers effective odor and gas prevention, as well as reliable water flow and drainage. ・ Available in 1¼" and 1½" sizes ・ 75mm Water Seal ・ Silicone Valve prevents foul odour or sewer gas entering the building if the water seal has evaporated which may occur due to lack of use through under occupancy ・ Multifit Compression Outlet suits all plastic, copper and lead pipe ・ Adjustable Inlet makes trap suitable for all domestic repair, maintenance and improvement work