PROTEGO®
Pressure and Vacuum Relief Valves
Reliable Tank Protection and Emission Reduction
PROTEGO® Pressure and Vacuum Vacuum Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. Relief Valves are designed to protect tanks, vessels, and process equipment Equipment Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion. from both pressure and vacuum conditions. During normal operation, storage tanks and process systems are exposed to pressure fluctuations caused by filling, emptying, thermal expansion, or operational changes. Without controlled venting, these fluctuations can lead to structural damage, product Product Includes equipment, protective systems, devices, components and combinations of these. loss, or safety risks. PROTEGO® Valves are available as pressure relief valves, vacuum relief valves, or as combined pressure/vacuum relief valves.
Highlights of PROTEGO® Breather Valves
10% Technology
Extreme tightness
ZETOP
Lifecycle confidence
Stable operation
Very high flow capacity
PROTEGO® 10% Technology and Tight Sealing
During normal operation, the valve pallet Valve pallet Valve pallet is the generic term for the assembly that rests on the valve seat. stays closed and seals the system. Pressure Relief Valves prevent vapor loss until shortly before the set pressure Set pressure Set pressure is the gauge pressure at the device inlet at which the relief device is set to start opening under service conditions. is reached, while Vacuum Relief Valves prevent air from entering until the defined vacuum level is reached.
Once the set pressure is exceeded, the valve begins to open. PROTEGO® Valves reach full lift Lift Lift is the actual travel of the valve pallet from the main valve out of the closed position. within 10% overpressure Overpressure Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. . This allows the valve to be set close to the allowable tank pressure Tank pressure Tank pressure is the pressure within a tank. while still releasing the required flow safely. This reduces unnecessary emissions compared to conventional valves that require significantly higher overpressure to fully open.
The sealing between the valve pallet and the valve seat Valve seat The valve seat is a component on which the valve pallet rests when the valve is closed. is provided by an FEP air cushion seal Seal A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements. , a metal to metal sealing, or a PTFE flat sealing, depending on the set pressure or on the application. The tightness of the PROTEGO® Valves is far above the normal standard (API 2000 or EN ISO 28300) and meets the stringent demands of emission control regulations.
The PROTEGO® valves demonstrated outstanding zero-emission performance and helped us achieve the environmental standards required for our site.
We provide engineered safety solutions.
Since 1954, PROTEGO® has built and provided Flame Arresters Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. , Pressure and Vacuum Relief Valves and Tank Equipment, now with the help of more than 750 employees worldwide.
Key Features and Design Characteristics
The valve reaches full lift within 10% overpressure. This enables set pressure close to opening pressure, improving pressure control and reducing product losses compared to conventional designs.
The sealing system maintains tightness above normal standards. This minimizes vapor loss and helps maintain system pressure up to the point of opening.
The valve opens later and re-seats earlier than conventional valves. This improves pressure stability and reduces loss of product or inert gas Inert gas Non-flammable gas which will not support combustion and does not react to produce a flammable gas. .
Large volume flows are achieved with only a small pressure difference. This supports efficient venting and can reduce the need for larger valve sizes.
The valve pallet is guided within the housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. . This protects internal components from environmental exposure and supports consistent operation.
The valve design allows for straightforward maintenance Maintenance Combination of all technical and administrative actions, including supervision actions, intended to maintain or restore a unit in working order. , supporting long-term operation.
The valves are suitable for use in explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. hazardous areas, supporting installation in regulated environments.
Engineering and Compliance
PROTEGO® Deflagration Flame Arresters Deflagration flame arrester Flame arrester designed to prevent the transmission of a deflagration. It can be an end-of-line flame arrester or an in-line flame arrester. are type-tested and certified according to ATEX and other international standards. Each device Device A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow. is supplied with a statement of conformity defining its approved operating conditions.
Additional installation considerations include:
Pipe diameter
Installation orientation
Custom approvals can be developed for specific regulatory or operating requirements.
Sizing is based on the relationship between flow rate and pressure drop using the p/V performance diagram.
Nominal diameter
Pressure drop
Where there is a risk of clogging, a safety factor must be applied. For non-standard applications, technical data should be submitted during specification.
Operational Benefits
Reduced emissions
Validated protection for OEM equipment
Flexibility for complex applications
Lower maintenance impact
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