PRODUCT DATA SHEET F0512| 20” MANHOLE COVER F0512 FEATURES & BENEFITS Pressure and vacuum vent fitted as standard for tank breathing. Various ratings are available to suit operational requirements. Two vents may be fitted if required. Spring-loaded fill cap provides emergency fire engulfment venting to NTTC DOT 406, required in the event of the tank being exposed to a fire. Emergency venting capacity 7000 m3/ h air at 350 mb. Automatic sealing of the P/V vent in a roll over situation prevents dangerous and costly spillage. Cover arm available in aluminium or steel. Steel cover arm exceeds the requirements of the Australian DROP tests (AS 2809-2-1990). 20” baseplate for ease of access. 250 mm (10”) fill hole for easy drop pipe insertion when top loading. Self-aligning seal ensures pressure tight operation at all times. Two-stage opening allows safe release of residual compartment pressure before fully opening fill cap. Secure 24-bolt fixing. Lightweight aluminium baseplate for increased payloads. Low profile design minimises roll over protection requirements. Security facility for padlock, wire or plastic seal. Left hand and right hand variants available. Accessory ports for high flow compartment vent (F0592), over-spill prevention probe and additional P/V vent. * * * * * * * * * * * * * * * * | Steel cover arm | Aluminium cover arm Steel cover arm exceeds Australian DROP test ( AS 2809-2-1990) Emergency fire engulfment venting to NTTC DOT 406 CEN * * * APPROVALS Internationally accepted, and specified, by oil companies around the world to assist with the safe conveyance of petroleumbased products, the Emco Wheaton range of manhole covers offers unrivalled safety features and operational benefits.
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