... 2011 Best Steady ppr check valve green With German Standard Green, gray,blue.etc Standard:DIN ... OEM acceptable 2011 Best Steady ppr check valve green With German Standard1, raw material: ppr and brass2 ... , pressure rating:2.5mpa3, color: white, green, grey, blue4, size:20mm to 32mm5, sanitary, ... D25,D32 2, ISO9001:2000 quality system certification 4.Competitive price, superior quality, best service 5 ...