Pipe flap, frog flap, backflow flap for HT KG pipes, diameter DN 150/160 Flap is completely equipped with a stainless steel flap on the outside. Quality product made of stainless steel and high-strength polypropylene. Polypropylene is a very durable and environmentally friendly raw material. It is resistant to aggressive chemicals and hot water up to 95 degrees Made in the EU. TÜV-Süd and ISO certified: EN ISO 9001-2009CE, Manufacturer: Capricorn