HC44X-16C软密封水用止回阀

H71X-16P304对夹止回阀

H76W-16P304蝶形止回阀

H71W-10T升降式黄铜止回阀

H41H-40C高压升降式止回阀

H44H-64C碳钢法兰止回阀

H44W-300LB304美标止回阀

H14W-16P304内螺纹止回阀

HH48X-16C法兰式消声止回阀

H11W-100P锻钢内螺纹止回阀

H42H-16C铸钢立式止回阀

HY41W-16T黄铜氧气止回阀