Maeda MK0003, Service Manual, Page: 172 / 348

2-144
16.3 DOUBLE PILOT CHECK VALVE
Specifications
Rated pressure 20.6 MPa (210 kgf/cm
2
)
Test pressure 41.2 MPa (420 kgf/cm
2
)
Max. flow rate 10L/min
Allowable leak amount 0.05 L/min (pressurizing 17.2 MPa [175 kgf/cm
2
] from A2 and B2 ports)
Check cracking pressure 0.49 MPa (5 kgf/cm
2
)
Pilot area ratio 6.2:1
Test oil temperature range 50 ± 5°C
Operating temperature range − 10 to +80°C
3-6.5 through
12 counter sinking, depth 6
2 - G1/4 (JIS O-ring type)
Circuit diagram