DH6/10

Relief valve – Balanced piston type pilot operated (3)
With shock damping valve
T
P
Relief valve – Balanced piston type pilot operated (3)
Overview
This balanced piston type pilot operated relief
valve, which is a seat type relief valve,
regulates the highest pressure of the hydraulic
circuit and at the same time prevents overload
of the hydraulic equipment and drive machines
and sets pressure for control of the hydraulic
equipment. The relief valve with unloading
function is used for loading and unloading the
circuit pressure with electrical signals.
Hydraulic symbols
RB
P (X)
(Y)
T
RBE
P (X)
Features
1. As this valve has a larger seat diameter than
that of a general balance type relief valve, it
has good responsiveness and flow
resistance when unloaded is small.
2. Pressure override is small.
3. Operation is correct and both
responsiveness and stability are good.
Specifications
Maximum working
pressure MPa (kgf/cm 2 )
Nominal dimension 52 82
Port P, X
Port T
Port Y
RB
RBE
RB
RBE
External drain
Internal drain
4. The relief valve with unloading function
can perform shockless, smooth unloading
if it is used together with the shock
damping valve (refer to the section of the
type number index “ZNS10”).
30.9 (315)
30.9 (315)
30.9 (315)
16 (163) (Note 3)
30.9 (315)
16 (163) (Note 3)
(Y)
T
RBE (with shock damping valve)
P (X)
Maximum flow rate
Highest adjustment pressure MPa(kgf/cm 2 )
Type of solenoid operated
directional valve (Note 1)
Pilot relief valve type
L/min
Cartridge type
Type of shock damping valve (Note 2)
1,500 3,500
9.8 (100) or 30.9 (315)
DE10P-20-204-W*
ZNS10-1
RDV10C
T
(Y)
Mass
kg
RB
RBE
Gasket connection type
Flange connection type
Gasket connection type
Flange connection type
(Note 1) Refer to the section of the type number index “DE10P” for the specifications.
(Note 2) Refer to the section of the type number index “ZNS10” for the specifications.
(Note 3) The maximum working pressure for port T and Y is limited by the specifications of DE10P.
37
37
41
41
88
46
92
50
100
The direct operated type relief valve RDV10C*-*/ 315-1.5 is
used for the pressure adjusting part of the pilot valve.
For the pressure increase value per turn of the adjust
thread, refer to the section of the type number index
“RD10”.
2-22