一、德标止回阀产品结构特点德标止回阀适用于公称压PN1.6-4.0MPa,工作温度-20℃-350℃的石油、化工、制药、化肥、电力工业等各种工况的管路上，切断或接通管路介质。二、德标止回阀其主要结构特点1、产品结构合理、密封可靠、性能优良、造型美观；2、密封面堆焊Co硬质合金、耐磨、耐腐、抗磨擦性能好、使用寿命长；3、阀杆调质及表面氮化处理，有良好的抗腐和抗磨擦性能；4、双重密封，性能更可靠；5、阀杆升降位置指示更直观；6、零件材料，法兰和对焊尺寸可根据实际工况或用户要求合理选配，满足各种工程需要。三、德标止回阀技术规范结构形式ConstructionDIN3356结构长度facetofacedimensionDIN3202连接法兰flangedendsDIN2543-2546试验和检验test&inspectionDIN3230-75四、德标止回阀产品性能规范公称压力(MPa)壳体试验压力(MPa)密封试验压力(MPa)适用温度(℃)适用介质1.62.41.76-20℃-350℃水、蒸汽、油品等2.53.752.754.06.04.4五、德标止回阀主要零部件材质序号NO.名称partname材质material1阀体bodyGS-C25、CF8、CF32阀瓣disc2CR13、F304、F3163金属垫片Metalspiralwoundgasket石棉+不锈钢Asbestos+stainlesssteel、PTFE4阀盖bonnetGS-C25、CF8、CF35六角螺母HexagonnutASTMA1932H、A193-8、A193-8M6双头螺栓boltASTMA193B7、A193-B8、A193-B8M六、德标止回阀H41H-16尺寸及重量压力等级PN16口径size1520253240506580100125150200250300L130150160180200230290310350400480600730850H707080808595110130155165215285325365Kv5.77.811.817.927.948.577.610916825138966410171446重量(kg)Weight2.43.03.85.77.410.315.220.4314969132198278七、德标止回阀H41H-25尺寸及重量压力等级PN16口径size1520253240506580100125150200250300L130150160180200230290310350400480600730850H707080808595110130155165215285325365Kv5.77.811.817.927.948.577.610916825138966410171446重量(kg)Weight2.43.03.868111621325170136318330八、德标止回阀H41H-40尺寸及重量压力等级PN16口径size1520253240506580100125150200250300L130150160180200230290310350400480600730850H707080808595110130155165215285325365Kv5.77.811.817.927.948.577.610916825138966410171446重量(kg)Weight2.43.03.87.110.412.722.528406490170240370)