Description
Flow is blocked from 1 to 2 until pressure increases to meet the selected valve setting, lifting the conical, pilot-stage poppet from its seat. This action exhausts oil above the main-stage piston (spool type), allowing it to shift and provide relief flow through 2 to tank. Pressure at 2 is additive to the reliefsetting of the valve. With port 3 fully drained to tank, the minimum relief setting of 2 bar (30 psi) is attained. To use the remote control feature, pressure at 3 may be varied externally in control of the main relief setting up to the selected maximum spring adjustment.
¹) Measured at 200 bar (2900 psi)
