H72Y对夹式高压止回阀对夹式高压止回阀概述：本逆止阀“C”碳钢材质型，系供安装在溶液、液氨、25%氨水、氮氨混合气的管道上用的。“R”316材质型系供安装在尿素装置管道上，输送尿素及甲胺液用的。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：尿素及甲胺液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*6280670180.00尼威止回阀相关产品:175H48Y/H空排止回阀H83H/Y卡箍角式止回阀H44X-10S塑料旋启式止回阀H41H/W美标止回阀H11H/H61H内螺纹锻钢止回阀H42X底阀H44F46旋启式衬氟止回阀H41F46升降式衬氟止回阀H12H/W不锈钢立式内螺纹止回阀H14W不锈钢内螺纹旋启式止回阀H40F46衬氟升降式止回阀H42H/W不锈钢立式止回阀H41H升降式止回阀H44H旋启式止回阀H72Y对夹式高压止回阀H41X全铜消声止回阀H76X软密封蝶型止回阀H76H对夹式蝶形止回阀H74H对夹圆型止回阀H74I型对夹式薄型止回阀H71H不锈钢对夹升降式止回阀H71H对夹式全铜止回阀HQ45X微阻球形止回阀HQ44X微阻球形止回阀HQ41X滚球式止回阀H44X（SFCV）橡胶瓣止回阀H41X消声止回阀HH44X微阻缓闭止回阀HH46X、HH48X、HH49X微阻缓闭止回阀H42X（DRVZ）静音式止回阀CVKR静音止回阀（大口径静音式止回阀）H77H对夹单瓣蝶型止回阀)