
| 产品分类 | 止回阀 | 
| 口 径 | DN50 - 300 mm | 
| 压 力 | PN2 - 4 Map | 
| 备 注 | 适用于介质单向流动的管路上,阻止介质回流,以防发生事故 | 
【产品说明】
 DH44Y 型150(Lb)~600(Lb)低温旋启式止回阀性能参数:
| 
             型号  | 
            
             公称压力  | 
            
             常温试验压力(MPa)  | 
            
             低温试验压力(MPa)  | 
            
             工作温度及适用介质  | 
        ||||
| 
             壳体  | 
            
             密封(气)  | 
            
             上密封  | 
        ||||||
| 
             DH44Y-150Lb  | 
            
             150  | 
            
             3  | 
            
             0.6  | 
            
             2.2  | 
            
             0.6  | 
            
             -46℃氨液、氨、丙烷  | 
            
             -101℃乙烯、二氧化碳  | 
            
             -196℃甲烷、氮气、液化天然气  | 
        
| 
             DH44Y-300Lb  | 
            
             300  | 
            
             7.5  | 
            
             0.6  | 
            
             5.5  | 
            
             0.6  | 
        |||
| 
             DH44Y-600Lb  | 
            
             600  | 
            
             15  | 
            
             0.6  | 
            
             11  | 
            
             0.6  | 
        |||
 DH44Y 型150(Lb)~600(Lb)低温旋启式止回阀零部件材料:
| 
             零部件材质  | 
        |||
| 
             零件名称  | 
            
             阀体、阀盖  | 
            
             闸板、阀座、阀杆  | 
            
             填料  | 
        
| 
             材料  | 
            
             A352-LCB  | 
            
             A182-F304  | 
            
             聚四氟乙烯  | 
        
| 
             A352-LC3  | 
        |||
| 
             A351-CF8  | 
        |||
 DH44Y 型150(Lb)~600(Lb)低温旋启式止回阀外形及结构尺寸:
| 
             公称通径  | 
            
             尺寸  | 
        ||||||||
| 
             mm  | 
            
             in  | 
            
             L  | 
            
             D  | 
            
             D1  | 
            
             D2  | 
            
             b  | 
            
             f  | 
            
             n-Φd  | 
            
             H  | 
        
| 
             DH44Y-150Lb  | 
        |||||||||
| 
             50  | 
            
             2  | 
            
             203  | 
            
             152  | 
            
             120.5  | 
            
             92  | 
            
             16  | 
            
             1.6  | 
            
             4-19  | 
            
             180  | 
        
| 
             80  | 
            
             3  | 
            
             241  | 
            
             192  | 
            
             152.5  | 
            
             127  | 
            
             19  | 
            
             1.6  | 
            
             4-19  | 
            
             190  | 
        
| 
             100  | 
            
             4  | 
            
             297  | 
            
             229  | 
            
             190.5  | 
            
             157  | 
            
             24  | 
            
             1.6  | 
            
             8-19  | 
            
             203  | 
        
| 
             125  | 
            
             5  | 
            
             330  | 
            
             254  | 
            
             216  | 
            
             186  | 
            
             24  | 
            
             1.6  | 
            
             8-22  | 
            
             229  | 
        
| 
             150  | 
            
             6  | 
            
             356  | 
            
             279  | 
            
             241.5  | 
            
             216  | 
            
             26  | 
            
             1.6  | 
            
             8-22  | 
            
             257  | 
        
| 
             200  | 
            
             8  | 
            
             495  | 
            
             342  | 
            
             298.5  | 
            
             270  | 
            
             29  | 
            
             1.6  | 
            
             8-22  | 
            
             292  | 
        
| 
             250  | 
            
             10  | 
            
             622  | 
            
             406  | 
            
             362  | 
            
             324  | 
            
             31  | 
            
             1.6  | 
            
             12-25  | 
            
             355  | 
        
| 
             300  | 
            
             12  | 
            
             698  | 
            
             483  | 
            
             432  | 
            
             381  | 
            
             32  | 
            
             1.6  | 
            
             12-25  | 
            
             396  | 
        
| 
             DH44Y-300Lb  | 
        |||||||||
| 
             50  | 
            
             2  | 
            
             267  | 
            
             165  | 
            
             127  | 
            
             92  | 
            
             23  | 
            
             1.6  | 
            
             8-19  | 
            
             178  | 
        
| 
             80  | 
            
             3  | 
            
             318  | 
            
             210  | 
            
             168.5  | 
            
             127  | 
            
             29  | 
            
             1.6  | 
            
             8-22  | 
            
             216  | 
        
| 
             100  | 
            
             4  | 
            
             356  | 
            
             254  | 
            
             200  | 
            
             157  | 
            
             32  | 
            
             1.6  | 
            
             8-22  | 
            
             241  | 
        
| 
             125  | 
            
             5  | 
            
             400  | 
            
             279  | 
            
             235  | 
            
             186  | 
            
             35  | 
            
             1.6  | 
            
             8-22  | 
            
             267  | 
        
| 
             150  | 
            
             6  | 
            
             444  | 
            
             318  | 
            
             270  | 
            
             216  | 
            
             37  | 
            
             1.6  | 
            
             12-22  | 
            
             305  | 
        
| 
             200  | 
            
             8  | 
            
             533  | 
            
             381  | 
            
             330  | 
            
             270  | 
            
             42  | 
            
             1.6  | 
            
             12-25  | 
            
             368  | 
        
| 
             250  | 
            
             10  | 
            
             622  | 
            
             445  | 
            
             387  | 
            
             324  | 
            
             48  | 
            
             1.6  | 
            
             16-29  | 
            
             394  | 
        
| 
             300  | 
            
             12  | 
            
             711  | 
            
             521  | 
            
             451  | 
            
             381  | 
            
             51  | 
            
             1.6  | 
            
             16-32  | 
            
             445  | 
        
| 
             DH44Y-600Lb  | 
        |||||||||
| 
             50  | 
            
             2  | 
            
             295  | 
            
             165  | 
            
             127  | 
            
             92  | 
            
             33  | 
            
             6.4  | 
            
             8-19  | 
            
             203  | 
        
| 
             80  | 
            
             3  | 
            
             359  | 
            
             210  | 
            
             168  | 
            
             127  | 
            
             36  | 
            
             6.4  | 
            
             8-22  | 
            
             235  | 
        
| 
             100  | 
            
             4  | 
            
             435  | 
            
             273  | 
            
             216  | 
            
             157  | 
            
             45  | 
            
             6.4  | 
            
             8-25  | 
            
             286  | 
        
| 
             125  | 
            
             5  | 
            
             511  | 
            
             330  | 
            
             266.5  | 
            
             186  | 
            
             52  | 
            
             6.4  | 
            
             8-29  | 
            
             292  | 
        
| 
             150  | 
            
             6  | 
            
             562  | 
            
             356  | 
            
             292  | 
            
             216  | 
            
             55  | 
            
             6.4  | 
            
             12-29  | 
            
             330  | 
        
| 
             200  | 
            
             8  | 
            
             664  | 
            
             419  | 
            
             349  | 
            
             270  | 
            
             63  | 
            
             6.4  | 
            
             12-32  | 
            
             381  | 
        
| 
             250  | 
            
             10  | 
            
             791  | 
            
             510  | 
            
             432  | 
            
             324  | 
            
             71  | 
            
             6.4  | 
            
             16-35  | 
            
             457  | 
        
| 
             300  | 
            
             12  | 
            
             842  | 
            
             559  | 
            
             489  | 
            
             381  | 
            
             74  | 
            
             6.4  | 
            
             20-35  | 
            
             584  | 
        
