What type of filter element is used to separate particles from fluids?

The type of filter element specifically designed to separate particles from fluids is the edge filter element. Edge filters use a series of edges or small gaps to trap particles as fluid flows through, effectively removing contaminants from the system. This mechanism is particularly useful in applications where maintaining fluid purity is critical.

Cartridge filters typically use a cylindrical design where contaminants are trapped within the filter material, while strainers often use a mesh design to physically filter larger particles from the fluid, allowing for more substantial flow without clogging. Diaphragm elements, on the other hand, generally serve a different purpose, often used in control systems to regulate fluid flow rather than for separating particles. Hence, the edge filter is the correct answer due to its design and functionality in particle separation.