Types of Safety Valves（https://www.huibo-valve.com/product/safety-valve/） There are two main types of safety valves - relief valves and poppet valves. Relief valves are designed to open proportionately as the system pressure increases, while poppet valves, also called safety relief valves, pop open fully once a certain level of pressure is attained. Applications of Safety Valves Safety valves find wide-ranging applications in various industries such as oil and gas, chemical, power generation, food and beverage, pharmaceuticals - essentially anywhere where there are pressure systems at play. They are most commonly used in boiler systems, pressure vessels, and piping systems. Selecting the Right Safety Valve Selecting the correct safety valve for your application is crucial to ensure effective protection.