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Type indication<br />
RB52<br />
Relief valve- Balanced piston type pilot operated<br />
Nominal dimension<br />
52, 82<br />
Connection method<br />
P<br />
F<br />
C<br />
<br />
<br />
<br />
Gasket connection type<br />
Flange connection type<br />
Cartridge type<br />
Series number: <strong>10</strong><br />
Shape of pressure adjusting part<br />
1 = Handle adjustment<br />
2 = Thread adjustment (with cap)<br />
3 = Handle with key adjustment<br />
RBE52<br />
Relief valve<br />
- Balanced piston type pilot operated<br />
(with solenoid valve)<br />
Nominal dimension<br />
52, 82<br />
Connection method<br />
P<br />
F<br />
C<br />
<br />
<br />
<br />
Gasket connection type<br />
Flange connection type<br />
Cartridge type<br />
Series number<br />
Vent circuit<br />
A Normal close<br />
B Normal open<br />
Shape of pressure adjusting part<br />
1 = Handle adjustment<br />
2 = Thread adjustment (with cap)<br />
3 = Handle with key adjustment<br />
Highest adjustment pressure<br />
<strong>10</strong>0 9.8MPa (<strong>10</strong>0kgf/cm 2 )<br />
315 30.9MPa (315kgf/cm 2 )<br />
Vent port<br />
No symbol<br />
Without vent port<br />
X With vent port (gasket connection type is X only)<br />
Drain system<br />
No symbol = Internal drain<br />
Y = External drain<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 />
Drain system<br />
No symbol = Internal drain<br />
Y = External drain<br />
Vent port<br />
No symbol<br />
Without vent port<br />
X With vent port<br />
(gasket connection type is X only)<br />
Highest adjustment pressure<br />
<strong>10</strong>0 9.8MPa (<strong>10</strong>0kgf/cm 2 )<br />
315 = 30.9MPa (315kgf/cm 2 )<br />
Solenoid type<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 />
Shock damping valve provided or not<br />
No symbol = Without shock damping valve<br />
S = With shock damping valve<br />
Electric connection symbol<br />
AL = Center terminal with lamp<br />
Input voltage<br />
12 12V<br />
24 24V<br />
<strong>10</strong>0 <strong>10</strong>0V<br />
200 200V<br />
* For other power supply, please contact us.<br />
Input power supply<br />
A = Alternating current<br />
D = Direct current<br />
R = AC/DC conversion<br />
W = Wet type (with standard emergency manual operation)<br />
* (For the explosion proof type, please contact us.)<br />
*For details, refer to the section of the solenoid operated<br />
directional valve “DE<strong>10</strong>”.<br />
Relief valve – Balanced piston type pilot operated (3)<br />
2-23
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