IHI 9NX - Control Valve

Relief valve assembly drawing cross sedion
MPa (kgf/cm2) MPa (kgf/cmz)
No.
1
2
3
4
STRUCTURE 8 FUNCTION
9NY
MR2
Maln
relief valve
5-1
- -
6 Adjustment valve 1.
7 Adjustment spring 1
8 Nut 1
9 Adjustment valve spring 1
10 Super pressure valve spring 1
11 O-ring 1
12 O-ring
1
13 O-ring 2
14 Backup ring 2
15 O-ring 1
Description
Socket
Super pressure valve
Piston
Adjustment section body
Upon assembling the
valve block
Q'ty
1
1
1
1
CONTROL VALVE (1)
0783 767 UA
OR1
Boom up
MR1
Overload Main
relief valve relief valve
Notes on damages due to over-tightening
0 Piping adapter on PIT port marked %
Tightening torque: 69aN . m (7ilkgf. m)-
0 Other piping adapters
Tightening torque:
344N . m (3.5-4.5kgf. m)