The spheroidal graphite cast iron manhole cover D400 h638_187 is a high-performance gully top, compliant with the UNI EN 124 standard. Made of GJS-500-7 cast iron, this model combines a square/octagonal base frame for stable installation with a circular top for the road surface. The structure includes an internal "U"-shaped seat equipped with an elastomer gasket that ensures a noise-reduction and anti-tilting function. The circular cover is hinged to the frame with a safety lock in the open position, but remains fully removable for maintenance operations. A mechanical locking system by means of a bolted rotating latch ensures the integrity of the manhole against unauthorized access.
Technical specifications
Material: Spheroidal graphite cast iron GJS-500-7 (EN 1563)
Load class: D400 (UNI EN 124 standard)
External frame dimensions: 1100 x 1100 mm
Circular clear opening: Ø 1000 mm
Height: 100 mm
Weight: 131 kg
Company Certification: ISO 9001:2015
Safety: Rotating latch locking system with spring
Frame Construction Details
Continuous external perimeter flange with slots for foundation anchoring
“U” seat with noise-reduction elastomer gasket
Closed-bottom hinge housing with cover locking at 90°
Lifting eyes for handling during installation
Cover Construction Details
Self-centering circular shape with non-slip embossing
Hinged cover and fully removable from the frame
Closed-bottom slot for opening and lifting key
Central and circumferential space for lettering customization
Frame dimensional identifier expressed in cm
* Images for illustrative purposes only
User Benefits
Traffic quietness: The elastomer gasket absorbs vibrations and prevents the metallic noise typical of traditional manhole covers when vehicles pass.
Operational Safety: The locking system in the open position prevents accidental closing of the cover while the operator works in the manhole.
Mechanical Protection: The bolted rotating latch ensures that the cover remains securely closed, discouraging vandalism or accidental openings.
Non-slip Stability: The surface with distributed embossing guarantees grip in all weather conditions, facilitating the runoff of rainwater.
Certified Installation: The flange base provided with slots ensures a superior chemical-physical bond with the road foundation, reducing maintenance interventions.
Scope of application
The h638_187 manhole cover is suitable for main road carriageways, rest areas, and parking lots open to all types of vehicles (Class D400). Thanks to the clear opening of 1 meter (Ø 1000 mm), it is perfect for inspections of large sewer collectors, technological junction chambers and wherever easy passage for operators equipped with bulky tools is required. The noise-reduction finish makes it ideal for installation in urban centers and residential areas with high traffic.
Why Choose It
Choosing this model is the correct choice when a large circular closing device is needed that offers maximum safety and acoustic comfort. The h128_187 model is the fundamental prerequisite for modern technical specifications requiring ISO 9001:2015 certification and full compliance with the UNI EN 124 standard. The combination of hinge articulation and rotating latch closure represents the state of the art for the inspection of heavy utilities.
FAQ
Is the elastomer gasket wear-resistant?
Yes, the gasket is housed in a protected seat and is made of material resistant to hydrocarbons and thermal shocks, ensuring the noise-reduction function for the entire life cycle of the product.
Can the cover be completely removed to facilitate work?
Certainly. The hinge attachment is designed to allow hinged opening but also permits the total removal of the cover from the frame if necessary.
What does "closed-bottom slot" mean?
It means that the compartment where the key is inserted does not communicate with the lower part of the manhole, preventing dirt and debris from falling inside or clogging the lock.
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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