H72H对夹式高压止回阀概述：H72H型对夹高压止回阀“C”型，系供安装在溶液、液氨25%氨水、氮氨混合气的管道上用的。“R”型系供安装在尿素装置管道上，输送尿素及***液用的。【H72H对夹式高压止回阀详细说明】H72H高压对夹式止回阀适用于公称压力PN1.0MPa～42.0MPa、Class150～2500mm;公称通径DN15～1200mm、NPS1/2～48;工作温度196～540℃的各种管路上，用于防止介质倒流。通过选用不同的材质，H72H型对夹高压止回阀可适用于水、蒸汽，油品、硝酸、醋酸、强氧化性介质用尿素等多种介质。H72H对夹式高压止回阀性能规范：型号公称压力（MPa）试验压（MPa）工作压力（MPa）工作工作介质强度密封H72Y-160C320C1632244817.635.2≤-30-260C：氮、氢、氨H72Y-220R320R2232334824.235.2≤-200-260R：尿素及***液H72H对夹式高压止回阀主要外形尺寸：H72Y-160CH72W-220R公称通径DD1DMLL1重量（kg）15954212M24＊2601584.1251055015M33＊2651636.9321156225M42＊2801808.0401658832M52＊29023015.0501658839M64＊311526527.06520011653M80＊314031549.08022513860M100＊316036088.010026016076M120＊418042091.012530019590M155＊4200460115.0150330212120M175＊4220500145.0200425265176M240＊6240570160.0H72Y-220CH72W-320R公称通径DD1DMLL1重量（kg）10954210M24＊2601553.4151055012M33＊2651584.5251156223M42＊2801807.3321357029M48＊2902008.7401658834M64＊311525517.05020011653M80＊314030030.06522513860M100＊316034556.08026016068M125＊418041092.010030019585M155＊4200470109.0125330212120M175＊4220510135.0150400250135M215＊6240570160.0200480320176M265＊6280670180.00H72H对夹式高压止回阀主要零部件材料：零件名称材料名称用标准牌号材料名称用标准牌号阀体合金钢GB3077-8840Cr尿素级不锈钢GB1220-9200Cr17Ni14Mo2阀座、阀瓣不锈钢GB1220-922Cr13尿素级不锈钢GB1220-9200Cr17Ni14Mo2透镜垫优质碳钢GB699-8820尿素级不锈钢GB1220-9200Cr17Ni14Mo2法兰优质碳钢GB699-8835优质碳素钢GB699-8835双头螺栓优质碳钢GB699-8840优质碳钢GB699-8840