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Pressure and Vacuum Emergency Manway

Motherwell’s 122 Series Pressure and Vacuum Emergency Relief Manways are designed to protect storage tanks from vacuum damage using spring-loaded valves that open under negative pressure. Ideal for bulk storage applications, they are available in sizes from 18″ (450mm) to 24″ (600mm). Manufactured with over 40 years of expertise, these manways ensure safe emergency venting and meet strict quality standards, including non-sparking options.
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Pressure and Vacuum Emergency Relief Manway

The unit is fitted with an additional spring-loaded vacuum valve that will open under negative pressure, protecting the tank from any vacuum damage.

They are used extensively on bulk storage tanks.

122 Series are manufactured by Motherwell Tank Protection in our UK manufacturing plant to exacting quality standards and backed by over 40 years experience. Sizes range from 18″ (450mm) to 24″ (600mm).

MTP 122 Series non-sparking emergency relief manhole covers permit access to low pressure storage tanks and provide emergency venting capacity in the event of fire.

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