Attack-proof and Weatherproof Manhole Cover SD3/RC4, security tested, rectangular type

Manhole cover, secure to prevent forced access, weatherproof, rectangular in shape, made of 1.4307 (AISI 304 L) stainless steel.

Design based on DIN 1239:2018-4, security tested to resistance class RC4 (DIN EN 1627). According to requirements of DVGW W 1050 - Object protection for water supply structures. Suitable for use in Ex zone 1.

The cover consisting of a 4 mm thick stainless steel plate with a centrally raised profile, with stable concealed hinges, stainless steel gas assisted spring dampers, integrated arrestor which can only be undone by hand, with handle, with a replaceable circumferential, insect-proof and totally weather-proof rubber seal (frost-proof and weather-resistant) attached to the underside of the cover for low wear, including lock system with anti-drilling protection, as standard with hardened safety locks as recommended by criminal investigation departments and in accordance with the normative standards; the profile cylinders in accordance with DIN 18252 to be provided by the customer.

A connection for potential equalisation is provided.

The frame is made of bent stainless steel profile, designed for bolted fixing with clips inside the manhole as lift locks.
Manhole cover and frame shielded arc-welded, acid-treated in a pickling bath and passivated. Operating key included.