Tank Breather Valves / Conservation Valves

… pressure relief and vacuum relief – dead-weight, spring or pilot all available

MTP Opti-flow 380 Series direct acting Pressure Relief and Vacuum Relief Valves, or Breather Valves are special types of relief valve which are specifically designed for tank protection.

The valves are available in a number of combinations illustrated below. All combinations are available in a range of sizes  and can have flanged outlets or vent to atmosphere. They are available in a range of materials available upon request. We will also line and coat valves if this is required.

• Available in Aluminium, Cast Iron, Carbon Steel, Stainless steel & other metals upon request
• Sizes  from 50mm (2″) to 300mm (12″)
• Valve sizing available, tell us your requirements and let us recomend your requirements
• Flow curves available for all our valves,
• Full Range of Spares available
• Servicing and resetting available upon request

All valves are certified and compliant with European ATEX and PED directives where applicable.

The 380 series of breather valves are available in a variety of configurations to ensure your requirements are met, these are illustrated below showing the pressure (Red) and vacuum(Blue) flows for each configuration

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Pressure Relief to Atmosphere & Vacuum Relief to Atmosphere	Pressure Relief to Closed Line & Vacuum Relief to Atmosphere
Pressure Relief to Closed Line & Vacuum Relief to Closed Line	Pressure Relief to Atmosphere & Vacuum Relief to Closed Line
Pressure relief only valves These are available in the options illustrated below
Pressure Only Relief to Atmosphere	Pressure Only Relief to Closed Line
Vacuum relief only valves These are available in the options illustrated below
Vacuum Only Relief from Atmosphere	Vacuum Only Relief to Closed Line