Pressure vacuum relief vents

A pressure/vacuum relief vent (PVRV) is a type of valve used to regulate or limit the pressure or vacuum that can be created inside a system or vessel due to a process disturbance, an instrument or equipment failure, or a fire. There is always a risk of a tank exploding due to overpressure or imploding due to vacuum. To prevent explosion or implosion, the tank must breathe. Because of this function, pressure and vacuum relief vents are often also called "breather valves". 

Pressure/vacuum relief vents are low pressure devices intended for use during normal venting operation (normal venting due to operational requirements or atmospheric changes). PVRVs are used for storage tank applications where the internal pressure is less than 15 psig or 1.013 bar. Pressure vacuum relief valves are also known as conservation vents.

Our pressure/vacuum valves

Ramén Valves offers high-quality pressure/vacuum relief vents from the American manufacturer Cashco Inc. With our extensive experience with the products and their areas of use, we help you find the right tank protection equipment for your needs. Feel free to contact us today. You can also book a meeting or chat with one of our product specialists.

Our pressure/vacuum valves

Ramén Valves offers high-quality pressure/vacuum relief vents from the American manufacturer Cashco Inc. With our extensive experience with the products and their areas of use, we help you find the right tank protection equipment for your needs. Feel free to contact us today. You can also book a meeting or chat with one of our product specialists.

Pressure/vacuum relief vent model 3100

The Model 3100 from Cashco is an end of line, weight-loaded pressure/vacuum relief vent. The product is designed to protect atmospheric low-pressure storage tanks from overpressure and vacuum conditions during normal venting operation in case of thermal changes or product movement in and out of the tank. 

Read more in the product data sheet.
Read more in the product IOM.

Pressure/vacuum relief vent model 3200

Model 3200 from Cashco is a weight loaded pressure/vacuum relief vent. The valve opens and closes to allow the release of steam or the intake of air, which is necessary to avoid negative and positive pressures that can lead to damage to the tank. The product is very accurate in terms of how much steam is released and how much air is taken in to avoid wastage or oxidation of the media.

Read more in the product data sheet.
Read more in the product IOM.

Pressure/vacuum relief vent model 4200

Model 4200 from Cashco is a spring-loaded pressure-vacuum relief vent that provides pressure and vacuum relief in applications where high pressures occur. The valve regulates the pressure in the tank within the specified setpoint to avoid pressure and vacuum damage that can occur in the event of, for example, thermal changes.

Read more in the product data sheet.

Pressure vacuum relief vents
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