This standard specifies the identification symbols for valves, subplates, manifold block ports, and solenoids used in hydraulic systems. This standard applies to the future development of valves with two or three ports that currently have different valve port markings.
JIS B 8669:2006 Referenced Document
JIS B 8355:1997 Hydraulic fluid power -- Subplate type solenoid operated four-port valves
JIS B 8357:2000 Hydraulic fluid power -- Compensated flow-control valves -- Mounting surfaces
JIS B 8664:2001 Hydraulic fluid power -- Pressure-control valves (excluding pressure-relief valves), sequence valves, unloading valves, throttle valves and check valves -- Mounting surfaces
JIS B 8666:2001 Hydraulic fluid power -- Pressure-relief valves -- Mounting surfaces
JIS B 8669:2006 history
2006JIS B 8669:2006 Hydraulic fluid power -- Identification of valve ports, subplates, control devices and solenoids