FIELD: production of sewer hatches.
SUBSTANCE: invention relates to implementation of a cover of a hatch in the form of a single structure by pressing from a polymer-sand composition.
EFFECT: technical result is improved reliability of cover locking in hatch of well and reliability of its operation, excluding possibility of unauthorized access to well, as well as increased safety of sewage collectors due to regulation of biogas pressure in them by means of application of adjustable mechanical valves in covers of hatches.
1 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| OBSERVATION WELL HATCH | 2022 |
|
RU2789254C1 |
| INSPECTION WELL MANHOLE | 2010 |
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| ACCESS CHAMBER HATCH | 2005 |
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RU2278215C1 |
| METHOD FOR TRENCHLESS REPAIR OF SEWAGE NETWORKS | 2007 |
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| MANHOLE HATCH (VERSIONS) | 2015 |
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RU2588096C1 |
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RU2361040C1 |
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| INSPECTION WELL OF CABLE DUCT, METHODS OF INSERTING A PIPE INTO THE WELL (OPTIONS) AND AN ADAPTER FOR IMPLEMENTING THE METHOD | 2021 |
|
RU2767772C1 |
| METHOD OF LOCKING THE HATCH OF A WELL INSTALLED ON ABOVEGROUND AND UNDERGROUND NETWORKS AND STRUCTURES | 2020 |
|
RU2743982C1 |
