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