Thomas Dudley manufactures a wide range of one-piece plastic WC flushing syphons, all of which can be used with confidence. As with every Dudley product, our plastic syphons undergo exhaustive and rigorous testing, which means that when they are installed, reliability and durability come as standard. This 9-litre, 2-part syphon is WRAS approved and suitable for high and low-level use. It features a 38mm (11/2") diameter outlet and spares packs are readily available. Made in the UK.