Pressure relief valve
The valve restricts the pressure at port P to the set value compared with the pressure at T.
If the differential pressure (dp=pP-pT) times the cross-sectional area of the sealing cone exceeds the spring force, the sealing cone lifts out of the seat and allows oil through to port T. The valve closes again once the pressure in port P drops again. The cushioning piston acts like a shock absorber to increase stability during the control response. The spring pretension can be adjusted at the hand wheel. Oil flows through the non-return valve if the pressure at port T is greater than at P.
|Opening pressure||0 ... 40 MPa||3|
|Pressure regulation range||0.01 ... 10 MPa||3.5|
|Hydraulic resistance||1e-6 ... 1000 bar.min2/l2||0.08|
|Hydraulic resistance||1e-6 ... 1000 bar.min2/l2||0.06|
|Check valve always closed||The check valve is always closed.|
|Check valve always open||The check valve is always open.|
|Linear scaling||Instead of the nominal value u the lineal scaling y = slope_err*u+ offset_err is used.|
|Offset||-40 ... 40 MPa||0|
|Slope||0 ... 10||0.5|