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浙江省瑞安永固机电厂生产的ST系列可调恒温疏水阀曾荣获第36届布鲁塞尔尤里卡世界发明一级骑士勋章,1990年获国家新产品称号,被列入国家火炬计划并向全国推广。该技术已获中国专利（87203764）。1987-1989年经机电部疏水阀检测定,超CVA9.5-83,CVA9.6-83的各项技术指标。 该产品与热动力型、波纹管型等各种疏水阀相比,具有如下优点: 1、漏气率低于0.1％,同国家规定漏气率3％相比,每只每年可节约原煤10吨。 2、温度可根据生产需要任意选择、调节,提高蒸汽利用率10％左右。 3、连续排水、无噪声、无气雾、不怕冻,可省去旁通装置。特别适合于严寒地区间歇供汽场合。
ST series adjustable thermostatic steam traps produced by Zhejiang Ruian Yonggu Mechanical and Electrical Equipment Factory won the 36th Brussels Eureka Invention Class 1 Knight Medal and won the title of National New Product in 1990. It was included in the National Torch Plan and promoted to the whole country . The technology has been China’s patent (87203764). 1987-1989 by the Electrical and Mechanical Services Department trap detection, super CVA9.5-83, CVA9.6-83 of the technical indicators. Compared with other types of steam traps such as thermodynamic type and bellows type, the product has the following advantages: 1, the air leakage rate is less than 0.1%, compared with the national 3% air leakage rate, each year can save raw coal 10 Ton. 2, the temperature can be arbitrarily selected according to production needs, regulation, improve steam utilization about 10%. 3, continuous drainage, no noise, no fog, not afraid of freezing, can bypass the bypass device. Particularly suitable for intermittent supply of cold places occasions.