国产精品三级在线观看无码,作爱小说,性瘾欲女系统hh,国产精品无码一区二区三级

Applications：

The DLM Stop Log Gate is suitable for cutting off flows during the maintenance works of channels and pump stations,can also serve as permanent gate.

Principles & Features：

1.Very low leakage (less than 1.0L/min.m):The gate is sealed by hollow p-shaped rubber and compressed by hydraulic forces.

2.The gate is made of aluminum alloy,highly resistant tocorro-sive,acidic,and alkaline flows.

3.The gate body obtains module design,low weight on each part,easy to handle &operate.