Description
Weld ring: available in stainless steel or light aluminium alloy fixed by a wiring ring, height 90 mm.
Fill hole : in light Aluminium alloy, pressure balanced design with galvanized iron quick closure. The fill hole cover is kept in its closed
cover: position by a spring, that enables the cover to automatically open at 300 mbar to vent the over-pressure (126 cm2 equivalent to 125 (5″) cross section).
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