Springvalve

Springvalve is a term used for valves that use a compression or tension spring to apply the closing force on the valve closure element. The spring provides a restoring force and, in many designs, acts in opposition to the process pressure, creating a self-contained actuation. Springvalves are used across hydraulic, pneumatic, and fluid handling systems and come in several configurations.

Construction and operation: typical components include a valve body with inlet and outlet, a closure element (such as a poppet, plunger, or ball), a seat, and a spring housed in a bonnet. The valve remains closed while the process pressure is below the spring force; once pressure exceeds the cracking pressure, the spring is compressed and the valve opens, allowing flow. When pressure decreases, the spring closes the valve again.

Common variants: spring-loaded check valves, pressure relief valves, and pilot-operated spring valves. Some designs integrate spring force with an additional pilot signal to achieve precise control or to handle large pressures.

Design considerations include material compatibility, temperature and pressure ratings, spring fatigue and wear, seat leakage, response time, and the required leakage class. Selection depends on intended medium, required cracking pressure, flow coefficient, and environmental conditions.

Applications include hydraulic and pneumatic circuits, water distribution, boiler safety relief, fuel systems, medical devices, and consumer appliances. The term "springvalve" is sometimes used interchangeably with "spring-loaded valve" or specific subtypes such as "spring check valve" or "relief valve" depending on function.