VAILLANT safety group with pressure reducer and pipe set R 1/2, concealed installation Pressure reducing valve with screw-out dirt filter, diaphragm safety valve (type-tested, 6 bar) with test connection for pressure gauge, valve block with shut-off valve, check valve with test device, drain funnel and connecting pipe. Sound insulation mark PA- IX 1261/l for mains overpressure above 6 to 12 bar Order no. 0020174067
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