A timer valve (1) relating to an aspect of the present invention includes: a housing (2) including a spool hole (5) being in communication with a drain port (9), a feeding port (6) configured to receive hydraulic oil fed thereto and a discharge port (7) configured to discharge the hydraulic oil; and a spool (3) movably provided in the spool hole (5). The spool (3) has a first connection recess (15) defined in an outer surface (3a), the first connection recess (15) being configured to establish communication between the feeding port (6) and the discharge port (7); and a liaison channel (30) establishing communication between the first connection recess (15) and the drain port (9). Within the liaison channel (30), a filter (25) is formed between the spool hole (5) and the outer surface (3a) of the spool (3) to stop foreign matter from entering into the drain port (9).
FLUID VALVE
FLUIDVENTIL
SOUPAPE DE FLUIDE
2024-05-01
Patent
Electronic Resource
English