... acceptable 2011 Best Steady ppr check valve green With German Standard1, raw material: ppr and brass2, pressure rating:2.5mpa3, color: white, green ... Spec:D20,D25,D32 2, ISO9001:2000 quality system certification 4.Competitive price, superior quality, best service 5.We have a strong ability ... not hesitate to contact us. OEM is also welcomed. 2011 Best Steady ppr check valve green With German Standard