上海精正阀门止回阀系列：进口止回阀，对夹式止回阀H71F-16，法兰止回阀H44H-16，日标止回阀(10K)，德标止回阀H44H-16，美标止回阀H44H-150Lb，日标不锈钢止回阀，德标不锈钢止回阀，美标不锈钢止回阀H44H-150LB，高温止回阀H42W-16I，高压止回阀H61W-160，静音止回阀H2T/X/H(DRVZ)，橡胶瓣止回阀HH44X(SFCV)，球形止回阀HQ41X,HQ44X,HQ45X，消声止回阀H1X-16，对夹式双瓣止回阀H76X/H,H71H,H72H微阻缓闭蝶形止回阀ZHYH46H/W,HH48H/X,HH49H/X，微阻缓闭式止回阀HH44X/H/T-16，对夹圆片式止回阀H74X/H-16，旋启式止回阀H44H-16，升降式止回阀H41H-16，节能消声止回阀H41X-16，V型高压单向阀，S型高压单向阀。