H64Y-1500LB对焊止回阀SPH64Y-1500LB止回阀

H64Y-250C焊接式电站止回阀SPH64Y-250C电站止回阀

H61H-320C焊接升降式止回阀SPH61H-320C焊接止回阀

H47X-2.5C风道止回阀 SPH47X-2.5C风道止回阀

H44Y-100I铬钼钢旋启式止回阀SPH44Y-100I止回阀

H44W-150Lb不锈钢美标止回阀SPH44W-150Lb止回阀

H44W-16P不锈钢旋启式止回阀SPH44W-16P旋启式止回阀

H44T-16铸铁旋启式止回阀 SPH44T-16铸铁旋启式止回阀

H44H-150LB铸钢美标止回阀 SPH44H-150LB止回阀

H44H-16C碳钢旋启式止回阀 SPH44H-16C旋启式止回阀

H42X-2.5P不锈钢底阀 SPH42X-2.5P不锈钢底阀

H42W-16P不锈钢立式止回阀 SPH42W-16P不锈钢止回阀

H42W-16P不锈钢立式止回阀 SPH42W-16P不锈钢止回阀

H42H-25铸钢立式止回阀 SPH42H-25铸钢立式止回阀

H42F-16C静音式止回阀 SPH42F-16C静音式止回阀