ThePipingMart Blog other Types of Vent Valve and Their Uses

Types of Vent Valve and Their Uses

Vent Valve

Vent valves are important components used in different industries, including the petrochemical, pharmaceutical, and food and beverage industries, to release pressure in sealed containers. They’re designed to maintain the required pressure inside the containers, extending their lifespan and preventing them from bursting. This blog post will delve into different types of vent valves and their uses, giving readers insights into the selection process and when they’re appropriate to use. Whether you’re a novice or an expert, this post will provide the information you need to make informed decisions.

Pressure Relief Valve (PRV)

A pressure relief valve is a vent valve commonly used in steam and gas equipment. Its primary purpose is to protect the equipment and the stored products in a pressure vessel from overpressure situations resulting from mechanical or thermal sources. For example, PRVs are used in boilers to prevent equipment damage and human injuries that can occur when excessive pressure builds up within the system.

Vacuum Relief Valve (VRV)

Vacuum relief valves relieve pressure in storage tanks subjected to vacuum conditions. In a vacuum situation, the stored products may vaporize, creating a vacuum, which can cause tank damage. The VRV releases air into the tank, creating a pressure balance. Typically, these valves are used in food and beverage, chemical processing, and pharmaceuticals.

Breather Valve

Breather valves are commonly used in storage tanks containing liquid products. They allow for the free flow of air in and out of the tank while maintaining a sealed environment. They are commonly used in the oil and gas industry, chemical processing, and pharmaceuticals. Breather valves prevent air from entering the tank, which can cause contamination, and also prevent overpressure and vacuum conditions, which can damage the equipment.

Emergency Relief Valve (ERV)

Emergency relief valves are vital components required by the environmental authorities that regulate the manufacturing industries such as petrochemical, chemical, food, and beverage to maintain safety standards. An ERV provides quick relief to the pressure building within a storage tank. They’re designed to open fully and rapidly to release pressure in high-risk situations. They’re also equipped with a closing mechanism activated once the pressure stabilizes.

Sanitary Pressure Relief Valve

Sanitary pressure relief valves are designed for the food and beverage industry as they provide a hygienic seal. They’re commonly used in equipment and piping systems to maintain the required pressure and prevent overpressure and vacuum conditions, which can interfere with production. Sanitation is essential in the food and beverage industry, so the valves are designed to meet the required standards and be easily cleaned.


Vent valves are essential components in different industries, and the selection process should be done carefully to avoid costly maintenance and repairs. Understanding the various types of vent valves available in the market, including their uses, is critical in making informed decisions. This post has provided an overview of the commonly used vent valves and their applications in different industries. After reading this post, you should be able to choose the appropriate valves that fit your industry’s needs.

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