品牌西博思种类NRVR静音式止回阀材质碳钢连接形式对夹结构形式升降式型号H71H(W)-16.25.40公称通径DN15-DN100（mm）压力环境PN简单描述该阀由阀体、阀瓣、弹簧等组成，水平或垂直安装于管路系统，防止介质倒流，具有结构短、体积小、质量轻；阀瓣关闭快速，水锤压力小；流道通畅，流体阻力小；动作灵敏，密封性能好。详细介绍主要技术参数型号公称通径试验压力工作温度适用温度壳体密封H71H-16Q1.62.41.76≤235℃水、蒸气、油品等H71H-25Q2.53.752.75≤235℃H71W-25H≤300℃H71W-25P≤200℃硝酸等腐蚀性介质H71W-40H4.06.04.4≤300℃H71W-40P≤200℃水、蒸气型号阀门阀瓣弹簧H71H-16QH71H-25QQT400-152550CrVAH71W-25HH71W-40H2Cr131Cr131Cr18Ni9H71W-25PH71W-40PZG1Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni9Ti主要外形尺寸公称通径LD公称通径LD1.62.54.01.62.54.0152548484880711401401402031.5585858100801601651652535.568686812511019019519532408080870150125215225225404590909020016090909020016027028539050561051051052502003303403506563125125125300250385400415法兰连接尺寸:铁制阀门按GB4216.4(5)-84标准,钢制阀门按GB/T9113.1-2000标准。)