CHECK VALVE FOR DISPLAYING AN OPERATION STATE CAPABLE OF SAVE THE TIME FOR MAINTENANCE TASK BY EASILY OBSERVING THE OPERATION STATE OF A CHECK VALVE IN OUTSIDE

摘要

PURPOSE: A check valve for displaying an operation state is provided to easily observe the normal operation state of a spool portion in the outside of a body portion by transferring a rod member to the outside of a body portion according to the movement of a spool portion.;CONSTITUTION: A check valve for displaying an operation state comprises a body portion(10), a spool portion(30) and a rod member(50). The supply flow passage(18) and exhaust flow passage(19) of the body portion are communicated with an inside space(12). The spool portion is transferred according to the inside space. The spool portion permits only the fluid flow of one direction from the supply passage toward the exhaust passage. According to the operation of the spool portion, the rod member is projected to the outside of the body portion.;COPYRIGHT KIPO 2012