国产自慰在线资源|国产精品亚洲中文欧美|亚洲欧美日韩精品专区|在线免费国产视频一区二区|免费一级A级高清毛片人妻|亚洲欧美在线制服丝袜国产|伊人久久大杳蕉夜夜揉夜夜爽|最新哺乳亚洲AV日韩AV二区

This accessory permits losses in different bends, a sudden contraction, sudden enlargement and a typical control valve, to be demonstrated.

• Mitre bend – 90° elbow – Swept bends (large and small radius)
• Sudden contraction and sudden enlargement
• Fully Instrumented with upstream and downstream pressure tappings.
• A bank of 12 water manometer tubes, mounted on the framework for visualisation of the pressure drop profiles.