What are the main functions of valves? What are the selection principles?

In heating engineering, polyurethane insulated pipes are an essential component. Among the auxiliary equipment, valves are also an indispensable and critical part, with a wide range of applications and a controlling function. Improper use can lead to leaks and drips, which may affect production lightly or cause accidents severely.

Valves are an essential component of industrial pipeline systems, playing a crucial role in the production process. The primary functions of valves include: connecting and disconnecting media—options include gate valves, butterfly valves, and ball valves; preventing reverse flow of media—check valves are available; regulating media pressure and flow—cut-off valves and regulating valves are options; separating, mixing, or distributing media—options include plug valves, gate valves, and regulating valves; and preventing media pressure from exceeding specified values to ensure the safe operation of polyurethane insulated pipes or equipment.

Operation -- Optional safety valve. The choice of valve is primarily based on the device's faultless operation and economic considerations.

Principles for selecting valves: Nature of the fluid being conveyed; Function of the valve; Valve size; Valve pressure loss; Working temperature and pressure of the valve; (May be two items) Material of the valve.