DH6/10
DH6/10 DH6/10
Pressure reducing valve – Balanced piston type pilot operated PRB Primary pressure pilot type Overview This balanced piston type pilot operated pressure reducing valve is used for reducing the pressure of the hydraulic circuit partly. Even if the pressure of the main circuit on the primary side fluctuates, it is possible to keep the circuit pressure on the secondary side (low pressure side) at the specified pressure. Type indication PRB Features 1. As nominal dimension #10 leads the pilot pressure from the secondary side, the structure is compact. 2. As nominal dimension #20 and 30 lead the pilot pressure from the primary side, the maximum flow rate is large and besides they can control the secondary pressure stably. 3. When the remote control valve is connected to the drain port, the secondary pressure can be controlled by remote control. Pressure reducing valve – Balanced piston type pilot operated Pressure reducing valve – Balanced piston type pilot operated Nominal dimension 10, 20, 30 Connection method P = Gasket connection type Series number: 10 Shape of pressure adjusting part 1 = Handle adjustment 2 = Thread adjustment (with cap) 3 = Handle with key adjustment Hydraulic symbols Without check valve With check valve Specifications Type of hydraulic oil No symbol V W No symbol C = = = Drain system Y = External drain Mineral based hydraulic oil Phosphate ester based hydraulic oil Fatty ester based hydraulic oil Water-glycol based hydraulic oil Check valve provided or not = Without check valve = With check valve Highest adjustment pressure 100 = 9.8MPa100kgf/cm 2 315 = 30.9MPa315kgf/cm 2 Nominal dimension Maximum working pressure (port A, B, Y)MPa (kgf/cm 2 ) Maximum flow rate L/min Highest adjustment pressure MPa (kgf/cm 2 ) Mass kg (Note) As the minimum adjustment pressure varies depending on the flow rate, refer to “Minimum adjustment pressure characteristics on the secondary side”. 2-51
Pressure override characteristics (viscosity 36 mm 2 /s (cSt)) PRB10 PRB 20 30 Secondary side pressure MPa Secondary side pressure MPa Flow rate (L/min) Flow rate (L/min) Pressure reducing valve – balanced piston type pilot operated Pressure drop characteristics (viscosity 36 mm 2 /s (cSt)) in the case of check valve free flow Pressure drop amountMPa Pilot valve The pilot valve used for the pressure reducing valve – balanced piston type pilot operated is as follows. If you need the pilot valve only, please specify “pilot valve type” and contact us. Flow rate (L/min) Nominal dimension Pilot valve type * (Note) * Same as the pilot relief valve for RB10, 20 and 30 (Note) The pressure adjusting system is shown. 1 = Handle adjusting type 2 = Thread adjusting type (with cap) 3 = Handle with key adjusting type PRB20X Pilot valve For PRB20, 30 Series number: 10 Shape of pressure adjusting part 1 = Handle adjustment 2 = Thread adjustment (with cap) 3 = Handle with key adjustment Type of hydraulic oil No symbol V W = = = Mineral based hydraulic oil Phosphate ester based hydraulic oil Fatty ester based hydraulic oil Water-glycol based hydraulic oil Highest adjustment pressure 100 = 9.8MPa100kgf/cm 2 315 = 30.9MPa315kgf/cm 2 2-52
- Page 88 and 89: Page Relief valve - Direct operated
- Page 90 and 91: Hydraulic symbols Pressure increase
- Page 92 and 93: Pressure override characteristics (
- Page 94 and 95: Dimension drawing RD*G/R RDV6G/R L2
- Page 96 and 97: RDV1M6R A 62 Maximum of 152 61 14.5
- Page 98 and 99: Type indication RBE Relief valve -
- Page 100 and 101: Pilot valve The type indication of
- Page 102 and 103: Dimension drawing RB*P B1 B2 X P T
- Page 104 and 105: Relief valve - Balanced piston type
- Page 106 and 107: Type indication RB35X Pilot relief
- Page 108 and 109: RB35F 38 19 110 Y port G1/4 screw d
- Page 110 and 111: Type indication RB52 Relief valve-
- Page 112 and 113: Pilot valve The type indication of
- Page 114 and 115: Three stage pressure relief valve 3
- Page 116 and 117: Dimension drawing 3RBE L10 L1 L8 L3
- Page 118 and 119: Pressure override characteristics (
- Page 120 and 121: PUE Pilot operated unloading relief
- Page 122 and 123: Dimension drawing PU10 47.1 85 66.7
- Page 124 and 125: Pilot operated unloading relief val
- Page 126 and 127: Dimension drawing PU35P (Gasket con
- Page 128 and 129: Specifications SD6P SD10P P-DE6R14-
- Page 130 and 131: Sequence valve — Balanced piston
- Page 132 and 133: Minimum adjustment pressure charac
- Page 134 and 135: Dimension drawing SB L5 L3 L2 6 13
- Page 136 and 137: Pressure override characteristics (
- Page 140 and 141: Secondary side minimum adjustment p
- Page 142 and 143: The direct operated type relief val
- Page 144 and 145: ●B*G/GT*・3 ●Handle adjusting
- Page 146 and 147: ●B*P*・1 ●Handle adjusting typ
- Page 148 and 149: Counterbalance valve CBD Overview
- Page 150 and 151: Dimension drawing CBD*G/R Handle ad
- Page 152 and 153: Pressure drop characteristics (visc
- Page 154 and 155: Variable throttle valve T1M 3-2 Th
- Page 156 and 157: ■Dimension drawing ●T1M*P C (wh
- Page 158 and 159: ■Pressure - Flow rate characteris
- Page 160 and 161: ■Dimension drawing ●T1M*P L1 L2
- Page 162 and 163: ■Pressure - Flow rate characteris
- Page 164 and 165: ■Pressure drop characteristics (v
- Page 166 and 167: 3-13 ■Dimension drawing ●TC1M*P
- Page 168 and 169: Pressure - Flow rate characteristic
- Page 170 and 171: ■Pressure drop characteristics (v
- Page 172 and 173: Pressure - Flow rate characteristic
- Page 174 and 175: 8 ●F*G/R 4-φ5.5 through hole Cou
- Page 176 and 177: Specifications Nominal dimension Ma
- Page 178 and 179: Temperature and pressure compensate
- Page 180 and 181: Three-way flow regulating valve
- Page 182 and 183: ■Dimension drawing ●FK10 6 10 9
- Page 184 and 185: Check valve S-(2)C Type indicat
- Page 186 and 187: ■Dimension drawing ●S-(2)C6 2 T
Pressure reducing valve – Balanced piston type pilot operated<br />
PRB<br />
Primary pressure pilot type<br />
<br />
<br />
Overview<br />
This balanced piston type pilot operated pressure<br />
reducing valve is used for reducing the pressure<br />
of the hydraulic circuit partly. Even if the pressure<br />
of the main circuit on the primary side fluctuates,<br />
it is possible to keep the circuit pressure on the<br />
secondary side (low pressure side) at the<br />
specified pressure.<br />
Type indication<br />
PRB<br />
Features<br />
1. As nominal dimension #<strong>10</strong> leads the pilot<br />
pressure from the secondary side, the structure<br />
is compact.<br />
2. As nominal dimension #20 and 30 lead the<br />
pilot pressure from the primary side, the<br />
maximum flow rate is large and besides they<br />
can control the secondary pressure stably.<br />
3. When the remote control valve is<br />
connected to the drain port, the secondary<br />
pressure can be controlled by remote<br />
control.<br />
Pressure reducing valve – Balanced piston type pilot operated<br />
Pressure reducing valve<br />
– Balanced piston type pilot operated<br />
Nominal dimension<br />
<strong>10</strong>, 20, 30<br />
Connection method<br />
P = Gasket connection 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 />
Hydraulic symbols<br />
Without check valve<br />
<br />
With check valve<br />
<br />
Specifications<br />
Type of hydraulic oil<br />
No symbol<br />
V<br />
W<br />
No symbol<br />
C<br />
=<br />
=<br />
=<br />
Drain system<br />
Y = External drain<br />
Mineral based hydraulic oil<br />
Phosphate ester based hydraulic oil<br />
Fatty ester based hydraulic oil<br />
Water-glycol based hydraulic oil<br />
Check valve provided or not<br />
= Without check valve<br />
= With check valve<br />
Highest adjustment pressure<br />
<strong>10</strong>0 = 9.8MPa<strong>10</strong>0kgf/cm 2 <br />
315 = 30.9MPa315kgf/cm 2 <br />
Nominal dimension <br />
Maximum working pressure (port A, B, Y)MPa (kgf/cm 2 )<br />
Maximum flow rate L/min<br />
<br />
<br />
Highest adjustment pressure MPa (kgf/cm 2 )<br />
<br />
Mass kg<br />
<br />
<br />
<br />
<br />
<br />
(Note) As the minimum adjustment pressure varies depending on the flow rate, refer to “Minimum adjustment<br />
pressure characteristics on the secondary side”.<br />
2-51