Being an important part of glass lined reactors and storage vessels, glass lined manhole cover is frequently opened and closed. The spring assisted manhole cover device can greatly save labor cost and it can be provided with a protection glass lined ring to avoid possible damage to the reactor body during manhole opening and closing.
* Labor-Saving due to application of mechanical spring assist
* Easy opening and closing reduces the risk of possible injury of operator
* Compact design, space saving
* Glass-lined protection ring is availabe which can provide maximum protection of glass lined manhole flange which is critical to glass lined vessel.
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