DH6/10

Pressure reducing valve – Direct operated type
B A Y
Pressure reducing valve – Direct operated type
Overview
This direct operated type pressure
reducing valve is used for reducing the
pressure of the hydraulic circuit. Even if the
primary side pressure fluctuates, the
secondary side pressure can be kept at
the specified pressure.
Type indication
Features
1. As this is a direct operated type pressure
reducing valve, the structure is simple
and compact.
2. The interface dimension of the valve is
identical with that of the solenoid
operated directional valve (6 size).
3. Compared to the balanced piston type
pilot operated, the drain amount is very
small.
4. When the secondary side pressure is
going to increase above the specified
pressure, oil escapes to the tank side,
keeping the secondary side pressure at
the specified pressure.
Pressure reducing valve – Direct operated type
Nominal dimension
8, 10
Type of hydraulic oil
No symbol = Mineral based hydraulic oil
V = Phosphate ester based hydraulic oil
W = Fatty ester based hydraulic oil
Water-glycol based hydraulic oil
Connection method
P = Gasket connection type
Series number: 10
Check valve provided or not
No symbol = Without check valve
C =
Shape of pressure adjusting part
1 = Handle adjustment
2 = Thread adjustment (with cap)
3 = Handle with key adjustment
Drain system
Y = External drain
Pressure adjustment rangeMPa (kgf/cm 2 )
Hydraulic symbols
Symbol
Nominal dimension
6 10
PRD 10Without check valve
A
25
75
150
0.5 to 2.5 ( 5 to 25)
2.0 to 7.4 (20 to 75)
6.4 to 14.7 (65 to 150)
0.5 to 2.5 ( 5 to 25)
1.0 to 7.4 (10 to 75)
2.0 to 14.7 (20 to 150)
210
7.9 to 20.6 (80 to 210)
2.0 to 20.6 (20 to 210)
Specifications
B
Y
Nominal dimension
6 10
6
Y
PRD 10
6 With check valve
A
Maximum working
pressure MPa (kgf/cm 2 )
Port A
Port B
30.9 (315)
20.6 (210)
Port Y
5.9 (60) 1.5 (15)
Maximum flow rate
L/min
30 45
Mass
kg
1.2 3.2
B
2-48