manual valve 1.EN215 2.CE,ISO9001:2000 is available 3.Nickle ... TRV Co.,Ltd.specialized in the manufacture of thermostatic radiator valve.We have produced this kind of products for ten years ... ,Croatia,Turkey, Poland, Ukraine, England, New Zealand and so on.manual valve:EN215CE,ISO9001:2000 is availableNickle platedMaterial :brass ...