HH44X/T/H型微阻缓闭止回阀

HH44X-16、HH44X/T/H型微阻缓闭止回阀

H71H、H71W型对夹升降式止回阀

H71H-25、H71H、H71W型对夹升降式止回阀

H44H型钢制旋启式止回阀

H41H、H41Y型升降式钢制止回阀

H41Y-16、H41H、H41Y型升降式钢制止回阀

H14W型内螺纹不锈钢止回阀

H14W-16、H14W型内螺纹不锈钢止回阀

DH44Y型低温旋启式止回阀

HC42X/HC42T/HC42H型*止回阀

HC42X-16、HC42X/HC42T/HC42H型*止回阀