行业新闻

原文
Security of supply Choice does not affect the water quality is an important indicator of the valve. Valve parts in contact directly with the water main inside the valve body, sealing parts, valve plates, at present, many manufacturers use the valve sealing part of the rubber material. Commonly used material is Nitrile rubber (NBR), chloroprene rubber (CR) or ethylene-propylene rubber (EPDM). The rubber is synthetic rubber. In the synthesis process, to add a dozen natural rubber materials and additives, anti-aging agent. Whether the final synthetic rubber sealing valve for water supply, must see that the rubber is non-toxic, meets drinking water health standards. The inside of the valve and valve plate and other parts, many paint manufacturers in the past using the method, only consider the rust problem, regardless of whether toxic. In practice, we found that: the water supply pipe network, pipe lined with corrosion problems are resolved, while the pipe is not lined valves, due to the precipitation of water and iron bacteria in water valve cavity and the valve plate erosion and deposition , resulting in some of the body wall appear like hills accumulation phenomenon. Not only affects the quality of water supplies, but also some of the loose one of the main valve off. Therefore, we request that these parts in direct contact with water, should be non-toxic spray paint, the best method is the use of electrostatic spraying non-toxic epoxy powder coating. We choose the valve, first check whether the non-toxic rubber and paint inspection certificate and proof that only the valve with the above conditions, in order to ensure water quality from pollution, to ensure water supply security.
原文来自：http://www.xuansaifa.org

是由上海赛泰泵阀有限公司提供的阀门新闻，中文译文仅供参考，以下提供站内导航搜索：

中国旋塞阀网旋塞阀产品旋塞阀知识旋塞阀厂商旋塞阀博客旋塞阀行业新闻

译文：
不影响水质是阀门选择的一个重要指标。阀门直接与水接触的部分主要是阀体内侧，密封部分，阀板等，目前许多厂家生产的阀门的密封部分采用橡胶材料。常用的橡胶材料是丁腈橡胶(NBR)，氯丁橡胶(CR)或乙丙橡胶 (EPDM)。这些橡胶都是合成橡胶。在合成过程中，要在天然胶内加入十多种原料和防老化剂等添加剂。最终合成的橡胶能否用于供水阀门的密封，必须看这种橡胶是否无毒，是否符合饮用水卫生标准。至于阀门内侧及阀板等部位，许多厂家过去采用涂漆的方法，只考虑防锈问题，而不考虑是否有毒。在实践中我们发现：供水管网中，管道的内衬防腐问题解决了，而管网阀门没有内衬，由于水的沉淀现象和水中的铁细菌对阀内腔和阀板的侵蚀与沉积，造成一些阀体内壁出现丘陵状的堆积现象。不仅影响了供水水质，同时也是一些阀门关不严的主要原因之一。因此，我们要求，这些与水直接接触的部位，都应喷涂无毒涂料，最好是采用静电喷涂的方法喷涂无毒环氧粉末。我们在选择阀门时，首先应检查是否具有橡胶和涂料的无毒证明和检验合格证，只有具备上述条件的阀门，才能保证水质不受污染，保证供水的安全性。

更多新闻：