Vacuum Relief Valve (CNC382 & CNC387)

Motherwell’s ATEX-approved Vacuum Relief Valves are designed specifically for tank protection, providing reliable vacuum relief where only negative pressure management is needed. Available in sizes from 2″ (50mm) to 12″ (300mm) and materials like aluminium, carbon steel, and stainless steel, these valves come with free sizing consultation, full flow capacity details, and a range of spare parts. Suitable for atmospheric or closed-line applications, meeting strict quality and safety standards.

Vacuum Relief Breather Valve is available in both dead weight and spring loaded

Looking for the right vacuum relief valve to protect your system?

Motherwell Tank Protection are manufacturers of high quality vacuum relief valves to customers worldwide. Our vacuum relief valve is specifically designed for tank protection, they are the ideal product when only vacuum relief is required. For other options see our full range of breather valves, each is designed to suit the customers specific needs.

Motherwell offer a free valve sizing service, let us recommend the right vacuum relief valve

All our vacuum relief valves are available with the following options

Vacuum relief valves are available in Aluminium, Carbon Steel, Stainless steel & other metals upon request
Valve sizes from 50mm (2″) to 300mm (12″)
Free valve sizing available, tell us your requirements and let us recommend what suits you best
Flow capacity details available for all our vacuum relief valves,
Full Range of Valve Spares available for vacuum relief valves
Valve servicing and resetting available upon request

Our vacuum only relief valves are compliant with European ATEX directives where applicable. Our breather valves are used extensively on bulk storage tanks, including floating roof tanks.

We manufacture our vacuum relief valves in our UK manufacturing plant to exacting quality standards and backed by over 40 years experience.