The h638_192 circular road manhole cover is a crowning device in GJS-500-7 ductile iron designed for installation in public spaces and carriageways subject to heavy traffic. Thanks to the D400 load class, the product effectively solves the problem of rocking and mechanical noise thanks to the integration of an elastomer gasket in the “U” seat. The bolt closure system ensures a watertight seal and superior security against unauthorized opening, making it ideal for the protection of critical inspection manholes located in urban and road contexts.
Technical features
Material: Ductile iron GJS-500-7 compliant with the EN 1563 standard.
Resistance class: D400 according to UNI EN 124 (breaking load 400 kN).
Outer frame dimensions: Ø 850 mm.
Clear opening: Ø 600 mm.
Height: 100 mm.
Weight: 84 kg.
Configuration: Circular frame and cover.
Sealing system: Double “U” seat with anti-noise and anti-rocking elastomer gasket.
Fixing: 3 recessed hexagonal head bolts on external closed-bottom compartments.
Structural features: Continuous outer perimeter flange with slots for anchoring via anchor bolts.
Surface: Anti-slip patterns designed for water drainage.
* Images are purely indicative
User Benefits
Acoustic comfort: The elastomer gasket inserted in the "U" seat absorbs vibrations, eliminating metallic noises when vehicles pass.
Watertight protection: The double-seat system and gasket prevent liquids and debris from entering the manhole, preserving the integrity of the underlying networks.
Tamper-proof security: Fixing via three recessed head bolts prevents accidental openings or acts of vandalism in public spaces.
Structural stability: The shaped perimeter flange and the slots for anchor bolts ensure solid anchoring to the foundation, preventing road surface subsidence.
Ease of lifting: The closed-bottom slots are sized for the use of standard lifting keys, facilitating periodic inspections.
Scope of Application
The use of the h638_192 manhole cover is recommended for main roads, parking areas and lay-bys where the transit of heavy vehicles requires a certified D400 resistance. Thanks to its circular shape and the 600 mm clear opening, it is perfect for access to inspection manholes of sewer, water or technological networks located in public spaces. The watertight seal makes it particularly suitable in areas where it is necessary to limit the escape of odors or the infiltration of rainwater.
Why Choose It
This model is the correct choice when stability and the absence of noise are priority decision requirements. The integration of the elastomer gasket makes it superior to traditional manhole covers in terms of urban environmental comfort. It is recommended for technical specifications that provide for the mechanical locking of the cover for security reasons or to avoid the lifting of the cover in case of high internal pressures in the network, ensuring an airtight and stable closure over time.
FAQ
What ensures the watertight seal in this manhole cover?
The watertight seal is guaranteed by the combination of a double mechanical seat on the cover and an elastomer gasket housed in a specific "U" seat in the frame, which is compressed by the tightening of the bolts.
Can the manhole cover be installed in high-speed traffic zones?
Yes, the D400 class is designed specifically for road carriageways and parking areas. The bolt fixing system prevents the cover from moving or jumping out of its seat due to dynamic stresses.
What are the three external compartments with threaded holes used for?
These compartments house the hexagonal head bolts needed to tighten the cover to the frame. The closed-bottom design prevents the accumulation of dirt in the threads, facilitating unscrewing operations over time.
Holity uses PayPal and credit transfer as methods of payment.
Credit Transfer
Paying by credit transfer the order will be handled only after a bank credit receiving confirmation. Payment must be made within 7 days from date of order. Go past the deadline, the order will be automatically canceled. The bank transfer purpose must necessarily bring the order number, the order date and client name. The products availability has to be judged only from the credited. The payment must 'be made payable to: ' NAMITI SRL '
PayPal
Selecting the type of PayPal payment, you will be redirected to a page on the PayPal site where in you can enter with your email address and password and make payment. Your financial data will not be shared with Holity but they will be handled directly by PayPal. In case of order cancellation or rejection by Holity, the amount will be refunded to your PayPal account and Holity will be not responsible for delays and / or damage during repayment.
Upon delivery of the goods the customer is required to inspect:
The number of packages delivered is as indicated in the transport document
The packaging is intact and not altered even in the closing strip
In case of tampering and / or breaks the customer will immediately challenge the shipment and / or delivery putting the word "SUBJECT TO INSPECTION FOR GOODS ....." (give reasons) on the delivery receipt from the courier.
The customer then must report any damage within 7 (seven) days of receipt of goods in the manner prescribed by the operator chosen for the expedition. In case the customer fails to collect within 2 (two) working days of the goods ordered and present in storage at the warehouses of courier and / or the Company due to the repeated inability to deliver to the address specified by the customer with the order, will return the goods to stores in Namiti Ltd., with charge to the account of charges for transport and storage of goods, the customer may request a new shipment of the goods, upon payment of these expenses and the new shipping cost.
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