CNC 121 Series of Emergency Relief Manways
Emergency Relief Manways
Motherwell Tank Protection CNC 121 Series are manufactured in our UK manufacturing plant to exacting quality standards and backed by over 40 years experience. They are avalaible with a variety of options which include
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Sizes range from 10″ (250mm) to 36″ (900mm).
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Made from Carbon Steel and Stainless Steel, Aluminium covers also available
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Manufactured to clients flange requirements
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Non flanged option available
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All manways are set and tested to the clients requirement up to 90Mbarg
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Various designs available to suit your requirements
CNC 121 Series non-sparking emergency relief manhole covers permit access to low pressure storage tanks and provide emergency venting capacity in the event of fire. They are used extensively on bulk storage tanks, including floating roof tanks.
| Table 1. Emergency Relief Vent Options | |
| Description | Materials / Options |
| Size Range | 10", 12", 18", 20", 24", 26", 28", 30", 32", 34", 36" |
| Process Connections | API 650 (20" and 24"), ANSI 150#, Special at no extra cost |
| Materials | Aluminium, Cast Iron, Carbon Steel, Stainless Steel, Special |
| Diaphragm & Insert | PTFE |
| Weights | Lead Plate (standard), Stainless Plate (special) |