原文：
①阀体、阀板材质应采用球墨铸铁。 ②阀杆材质。闸阀应为不锈钢阀杆（2Cr13），蝶阀应为不锈钢嵌包的阀杆； ③螺母材质。其应采用铸铝黄铜或铸铝青铜，其硬度和强度均大于阀杆； ④密封面的材质 A、普通楔式闸阀。铜环应为铸铝黄铜或铸铝青铜； B、软密封蝶阀。密封面通常采用丁晴橡胶及三元乙丙橡胶等，严禁采用再生橡胶。密封材质必须满足卫生指标要求，并且要标明抗老化实验和耐磨性实验的有关数据； ⑤阀轴填料。应以V型 橡胶圈或碳素纤维浸聚四氟乙烯填料，应保证密封性能良好，不渗漏；在启闭频繁时要求填料不活动，不老化，长期保持密封效果，应保证至少十年不换或更长时间。 2、变速传动箱的技术要求 ①箱体材质应与阀体材质一致； ②传动箱要求密封、能承受不低于3米水深的浸泡而不漏； ③箱体内无杂物，齿轮交合部位应有润滑脂保护。 3、软密封蝶阀的结构技术要求： ①阀门关闭一律应为顺时针方向转动； ②阀体上应设有蝶板限位块，其强度须大于阀门的开启扭矩； ③密封圈应固定在阀体上，密封圈压板应燕尾压板并带可靠防松脱措施； ④阀门启闭操作端应为方榫，且尺寸标准化，并面向地面； ⑤阀门启闭程度的刻度线，应铸造在变速箱盖上或转换方向后的显示盘外壳上，一律面，刻度线刷上荧光粉，以示醒目。 4、阀体内接触水流部分及阀板应有防腐措施，如清砂除锈后喷涂粉状xx环氧树脂。 5、对阀门标牌的要求 阀门出厂时阀门厂应给每个阀门一个固定的编号，其编号和阀门型号、口径、公称压力、阀门编号、生产厂家、生产日期等阀门标牌内容应固定在阀体上。

“ Valve material requirements ”是由提供的阀门行业新闻，译文仅供参考。另外，中国气动阀门网还提供相关产品搜索： 、 、 、 、 、 、 、 、 、 等。

译文：
① body, ductile iron disc material to be used. ② stem material. Valve should be stainless steel stem (2Cr13), butterfly valve of stainless steel embedded in the package should stem; ③ nut material. It should be brass or cast aluminum cast aluminum bronze, its hardness and strength are greater than the stem; ④ sealing surface of the material A, normal wedge gate valve. Copper ring should be brass or cast aluminum and cast aluminum bronze; B, soft seal butterfly valve. Sealing surface usually NBR and EPDM rubber, recycled rubber is strictly prohibited. Sealing material must meet the requirements of health indicators, and to identify anti-aging test and wear test of the data; ⑤ valve shaft packing. Should be V-type rubber ring or a carbon fiber soaked PTFE packing, should ensure good sealing performance, are not leaking; the frequent opening and closing inactive filler when required, not aging, long-term effects remain sealed, should ensure that at least ten years no change or more. 2 speed gear box of the technical requirements ① box material should be consistent with the body material; ② gearbox sealing requirements, withstand not less than 3 m depth of immersion without leakage; ③ cabinets without debris, gear lubricant oral sex should be co-location protection. 3, soft seal butterfly valve structure technical requirements: ① valve should be closed clockwise rotation; ② body should have the disc stopper block, the strength of torque to be greater than the valve opening; ③ should be fixed in the valve seal, the seal plate and the plate should dovetail with reliable anti-loosening measures; ④ valves open and close operation should end mortise and tenon, and the size standard, and for the ground; Valves open and close levels of scale ⑤ line, should be cast in the gearbox cover or change the direction of the cover plate after the show, all surface, scale wire brush on the phosphor, to show eye-catching. 4, valve body parts and the valve plate contact with water should be corrosion measures, such as sand rust after spraying non-toxic powder epoxy. 5, on signs demand valve Valve factory valves valves to each plant should be a fixed number, the number and valve type, diameter, nominal pressure, valve number, manufacturer, production date of the contents of the valve plate to be fixed to the body .