ES238906A1 - Improvements in valves for fluids (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in fluid valves characterized by an emergency relay valve for braking operation in combination with a service pipeline; an emergency pipeline; a main source of pressurized fluid, and an emergency source of pressurized fluid and comprising a body provided with a passage for connecting the source of emergency fluid pressure to a braking chamber; an inlet valve with a mobile element to open and close said passage; an exhaust valve integrally connected to the inlet valve for simultaneous movement therewith; a relay element linked to the variation in the pressure of the fluid in the service pipe and provided with an exhaust passage to s or through; the relay element can be moved against the exhaust valve to close the exhaust passage and then open the inlet valve; an emergency piston in the mentioned body, with one side exposed to a force under pressure, and with the other side exposed to a pressure force from the emergency source of fluid under pressure; the pressure force of the main origin is normally higher than the strength of the emergency source, to keep the emergency piston in a first norm position; the piston is movable to a second emergency position when the pressing force of the emergency source is greater than the pressing force of the main origin, and means for automatically closing the exhaust valve and then opening the inlet valve independently of the means of relief, when the emergency piston moves to its emergency position. (Machine-translation by Google Translate, not legally binding)