铸钢法兰止回阀(H44H、H44W)
铸钢升降式止回阀(H41H、H41W)
铸钢旋启式止回阀(H44H、H44W)
铸钢止回阀(H44H、H44W)
锻钢旋启式止回阀(H64Y、H44Y)
锻钢自密封止回阀(H61Y、H64Y)
自密封止回阀(H61Y、H64Y)
高压自密封止回阀(H61Y、H64Y)
内螺纹锻钢止回阀(H11Y、H11H)
承插焊锻钢止回阀(H61Y、H61H)
锻钢高压止回阀(H41Y、H41H)
锻钢法兰端止回阀(H41Y、H41H)