H11H高温高压止回阀

BH44H保温旋启式止回阀

H44H-150LB美标法兰止回阀

H41H-16C升降式铸钢止回阀

H44H旋启式铸钢止回阀

H42H-16C立式法兰止回阀

H74H-16P不锈钢对夹式止回阀

H76H对夹式双瓣止回阀

H71H-16C对夹升降式止回阀

H44T-10铸铁法兰止回阀

H44X铸铁软密封止回阀

H72Y-200高压对夹式止回阀