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Clark-Drain launches D400 manhole cover aimed at projects where a double seal is essential for controlling unwanted odours

Drainage product and access cover leader, Clark-Drain, has launched CD D600H-DSL a ductile iron ‘sealed and locking’ solid top cover for BS EN 124 D400 loading requirements.

Clark-Drain believes that the introduction of the product will provide a better, more cost effective solution in areas where foul drains can provide a public health issue.

Fash Shahidi, Key Account Manager at Clark-Drain comments, “Sealing plates have been historically used where odour control is part of the building regulations, however this type of product eliminate the need for a sealing plate because it is designed with a double seal incorporated into the cover and frame.”

When installed, the seal consists of a double ridge projecting down from the cover all the way around its edge into a corresponding groove on the frame which Clark-Drain recommends is grease-filled, providing an inexpensive alternative.

The CD D600H-DSL with a 600mm x 600mm clear opening is recommended for heavy duty traffic. Examples of its application will include, inside industrial buildings, bus depots, car parks, in some areas of petrol stations and municipal maintenance facilities.

Other features include security locking screws which are standard on the CD D600H-DSL, integral lifting keyholes enabling the cover to be removed for easy utility access and a cover and frame design engineered to provide excellent seating and minimise the load on the bedding material.

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- Uploaded 26/08/2015