Patent ID: 11927277
Assignee: FESTO SE &CO. KG
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A valve unit, having an electrofluidically pilot-operated main valve, said main valve comprising a main valve slide, said main valve slide being movable in a valve longitudinal direction and opposite to the valve longitudinal direction by a fluid impingement whilst carrying out a switch-over movement, said fluid impingement acting on opposite sides of the main valve slide, and
wherein the valve unit further comprises a pilot valve device, said pilot valve device being arranged adjacently to the main valve in the valve longitudinal direction, said valve longitudinal direction being perpendicular to a valve height direction, wherein the fluid impingement of the main valve slide is controlled by the pilot valve device with a pilot fluid via a first pilot working channel and a second pilot working channel of the valve unit,
wherein the pilot valve device comprises an electrically actuatable first pilot valve and an electrically actuatable second pilot valve wherein the first and second pilot valves are arranged in a row in the valve longitudinal direction and wherein the first pilot valve is arranged between the main valve and the second pilot valve, wherein the first pilot valve comprises a first pilot valve housing,
wherein a fluid flow of the pilot fluid in the first pilot working channel is controllable by way of the first pilot valve and a fluid flow of the pilot fluid in the second pilot working channel is controllable by way of the second pilot valve,
wherein the second pilot working channel connects the second pilot valve and the main valve, wherein the second pilot working channel passes through the first pilot valve, and
wherein the first pilot valve is provided with a hand-actuation device, said hand-actuation device comprising a hand actuation member, said hand actuation member being received at least partly in an actuation member receiving space of the first pilot valve housing and further being accessible from outside the pilot valve device for manually creating an actuation movement, wherein the actuation movement actuates the first pilot valve,
wherein the second pilot working channel with a receiving space channel section passes through the actuation member receiving space, the actuation member receiving space being formed in the first pilot valve housing, in the region of the hand actuation member.