Execution: • heavy commercial version • DVGW-approved backflow preventer • doubly intrinsically safe against backflow and circulation • standpipe 1/2 x 1/2 male thread made of brass • standpipe holder made of brass • spring holder with drip holes, infinitely fixable • suspension spring made of stainless steel 1.4310 K surface pickled • stainless steel hose • non-return, self-closing shower • handle made of black plastic that can be infinitely dosed Dimensions: • standpipe: Ø 20.5 mm • standpipe holder: Ø 8 - L 120 mm