Opening cartridge valve
The 2/2-way cartridge valve is a 2/2-way valve. It is fitted with two working ports and the two switch positions
open. Whether or not the cartridge valve is open or closed depends on the effective areas A, B and X, the adjacent pressures pA, pB and pX, as well as the spring force. A+B=X is valid.
If pA*A + pB*B > pX*X + F, then the valve opens, otherwise it is closed.
The valve therefore operates purely pressure dependent and can, with the appropriate control, assume directional-, flow- and pressure functions. The spring force is specified by means of the nominal pressure. This is the minimum pressure, with pressureless connections at B and X, necessary at connection A to open the valve.
Whether the valve has one (A=B) or two (A <> B) effective areas can be specified in the properties window. The relevant symbol is automatically depicted.
The hydraulic resistance relates to the completely opened valve.
|Type||Without stroke limiter, With stroke limiter||Without stroke limiter|
|Maximum stroke||0 ... 100 %||100|
|Opening pressure||0 ... 40 MPa||0.5|
|Area A||0.1 ... 100 cm2||6|
|Area B||0.1 ... 100 cm2||3|
|Pressure regulation range||0.01 ... 10 MPa||0.05|
|Hydraulic resistance||1e-6 ... 1000 bar.min2/l2||0.01|