Attack-proof and weatherproof manhole cover SD4/RC3, security tested, round type

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

In accordance with DIN 1239:2018-4, security tested to resistance class RC3 (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 lock as recommended by criminal investigation departments and in accordance with the normative standards; the profile cylinder in accordance with DIN 18252 to be provided by the customer. A connection for potential equalisation is provided.

The frame consists of an angle section, 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.