概述：本逆止阀“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，输送尿素及甲胺液用的。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：尿素及甲胺液主要外形尺寸：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*6280670180.00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螺母优质碳钢GB699-8825优质碳钢GB699-8825弹簧弹簧钢GB1222-8465Mn尿素级不锈钢GB1220-9200CR17Ni10Mo2O型密封圈四氟乙烯日华尔卡7010四氟乙烯日华尔卡7010)