The McAlpine A10V Water Seal Anti-Syphon Bottle Trap is a plumbing component designed to prevent backflow of foul gases and odors from the drainage system into your living or working space. It is commonly used in bathrooms, kitchens, and laundry rooms to connect sink or basin waste pipes to the main waste system. The A10V Bottle Trap has a 75mm water seal, which means that it traps a certain amount of water in its U-shaped bend, creating a barrier that prevents gases from passing through. The trap also features an anti-syphon valve that stops the negative pressure in the waste pipe from sucking out the water seal, which could allow gases to escape into your property. This particular model, the McAlpine A10V, also comes with a Silentrap feature, which reduces the noise of water draining by up to 20 decibels, making it ideal for use in areas where noise pollution is a concern. The trap has a multifit outlet, which means it can be connected to a variety of pipe sizes and materials, including copper, plastic, and iron. Overall, the McAlpine A10V Water Seal Anti-Syphon Bottle Trap with Multifit Outlet is a reliable and efficient plumbing solution that offers excellent protection against foul odors and noise pollution. This is the adjustable version Available in 1.25" and 1.5" sizes 75mm Water Seal Multifit Compression Outlet suits all plastic, copper and lead pipe Anti-Syphon Valve neutralises negative syphonic pressure and eliminates gurgling Manufactured in polypropylene McAlpine A10V 75mm Water Seal Anti-Syphon (Silentrap) Bottle Trap with Multifit Outlet 1.25" in White