• Resistance and Load Capacity (Class D400): Suitable for the transit of cars and heavy vehicles, ensuring maximum safety on road carriageways and parking areas.
• Advanced Airtightness: The "U" seat allows creating a barrier against the escape of unpleasant odors and the infiltration of liquids, improving the hygiene of the utility service.
• Anti-noise Stability: Thanks to the high interlocking depth and the precision of the components, the manhole cover drastically reduces tilting phenomena and noise pollution.
• Ease of Installation: The frame with continuous flange and anchoring holes ensures a solid connection with the concrete foundation, preventing the manhole cover from detaching from the road surface.
• Safe Operation: The closed-bottom slots are designed to accommodate standard lifting keys, making inspections quick and safe for technical personnel.

The h638_123 model is the ideal solution for sewer networks, aqueducts and technological ducting located in high-traffic urban areas. Its configuration makes it perfect for insertion in paved squares, shopping center car parks and road embankments, where a product that integrates square aesthetics, D400 robustness and odor protection is required.

Choosing this manhole cover means focusing on the certified quality of GJS-500-7 ductile iron. Unlike cheap manhole covers, the h638_123 model offers maximum interlocking precision that extends its useful life and reduces road maintenance costs. It is the correct choice for administrations and companies looking for an airtight and self-locking product capable of withstanding constant dynamic stresses without yielding or producing annoying noises when vehicles pass.

What is meant by "unique positioning"?

The frame and the cover have coordinated beveled corners. This means that the cover can only be inserted into the frame in one correct direction, always ensuring perfect adhesion between the surfaces and the correct operation of the automatic closure.

Does the "U" seat require the use of gaskets?

The "U" system is designed to ensure mechanical airtightness. Often, to maximize odor sealing, the seat is filled with fine sand or grease, creating a hydraulic seal that prevents gases from rising from the gully.

Is the manhole cover suitable for fast extra-urban roads?

Yes, class D400 complies with regulations for installation on the carriageways of main roads. The 75 mm height and 33 kg weight ensure the critical mass necessary to remain stable even under the effect of shock waves caused by fast traffic.