Patent ID: 11933419
Assignee: DANFOSS A/S
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 3:
4. The hydraulic valve of claim 3, wherein when the main-poppet is in the closed position and the pressure in the main-poppet chamber is pressurized to the predetermined level by pressure from the side port, the pressure within the main-poppet chamber forces the pilot-poppet in the second direction to open the pilot port and relieve pressure from the main-poppet chamber through the passage to the axial port, and wherein when the pressure in the main-poppet chamber is relieved, the pressure from the side port acting on the exterior of the main-poppet moves the main-poppet from the closed position to the open position against the bias of the main-poppet spring such that pressure at the side port is relieved to the axial port.