H64Y-250C焊接式高温高压电站止回阀

H42X-2.5P不锈钢底阀

H42F-16*式止回阀

H42F46-16CH42F46-16C衬氟立式止回阀

HC41X-16消声止回阀

H42H-25C铸钢立式止回阀

H42W-16P不锈钢立式止回阀

H76W-16P不锈钢对夹双瓣旋启式止回阀

H44Y-100I铬钼钢旋启式止回阀

H44W-16P不锈钢旋启式止回阀

H44T-16铸铁旋启式止回阀

H44H-16C碳钢旋启式止回阀