DH6/10
DH6/10 DH6/10
Pressure override characteristics (viscosity 36mm 2 /s (cSt)) RB1M6C RB1M10C 30 30 Pressure (MPa) 20 10 0 10 20 30 40 50 60 Flow rate (L/min) Pressure (MPa) 20 10 0 20 40 60 80 100 Flow rate (L/min) Relief valve – Balanced piston cartridge type pilot operated Dimension drawing RB1MC Machining dimension of manifold 0.02 A B Width across flat 6 1.6 0.1 C Width across flat 19 Width across flat 22 D1 D2 D3 D A B L8 D8 D4 C 3.2 D5 L9 In the case of external drain 0.9x30 L6 L7 L5 D6 In the case of internal drain D7 T P Y R0.4 P 0.5x45 4 L5 L4 1.6 L3 L2 D D5 L1 P 0.02 Nominal dimension D1 H7 D2 D3 H8 D4 ±0.1 D5 D6 (maximum) (maximum) D7 D8 L1 +0.3 0 +0.1 L2 0 +0.2 L3 0 L4 (finish range) L5 +0.2 L6 0 L7 ±0.1 L8 L9 (maximum) (maximum) 6 20.5 M20x1 19 16.5 11 6 3 25 36 32 30 24 14 4.8 26 47 79 10 24.5 M24x1 23 16.5 11 10.5 3 25 40 36 34 24 15 5.2 29.7 43 79 2-31
Pilot operated unloading relief valve (1) PU PUE - with shock damping valve A P T A P T Pilot operated unloading relief valve (1) Overview The pilot operated unloading relief valve is used with either an accumulator or a two pump high-low circuit. One state being high flow low pressure and the other low flow high pressure. In the case of the accumulator circuit, when the pump discharge pressure reaches the cut-out pressure, the valve opens and the pump is unloaded. When the pressure on the accumulator side reaches the cut-in pressure, the valve is closed and the pump is loaded, pumping out the discharged oil to the accumulator side. In the case of the high-low circuit that uses two pumps, when pressure reaches the set pressure (cut-out pressure), the valve opens, pressure oil from the pumps is automatically returned to the tank and the pump is unloaded. When the pressure falls below the set pressure, the valve is closed and the pumps become automatically loaded. Features 1. The main valve part is of special shape and a shock when unloaded is very small. 2. An pilot operated unloading relief valve with a solenoid operated directional valve that can be unloaded and loaded with electrical signals is also available. Type indication PU Pilot operated unloading relief valve 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 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 Check valve provided or not C Pressure adjustment range 80 160 315 = 2.0 to 7.9MPa (20 to 80kgf/cm 2 ) = 7.9 to 15.7MPa (80 to 160kgf/cm 2 ) = 15.7 to 30.9MPa (160 to 315kgf/cm 2 ) Hydraulic symbols PU PUE PUE (with shock damping valve) P P P A A A T T Pressure increase value per turn (clockwise) of adjust thread MPa (kgf/cm 2 ) Nominal Highest dimension adjustment pressure 100 315 10, 20, 30 80 1.96 (20.0) 3.53 (36.0) 7.35 (75.0) (Note) As the above value is a calculated value, there are slight variations in the product. T 2-32
- Page 68 and 69: Manual selector valve (2) ■Dimens
- Page 70 and 71: Manual selector valve - KLA type Ma
- Page 72 and 73: Check valve (1) ■Specifications N
- Page 74 and 75: Check valve (1) ●C (cartridge typ
- Page 76 and 77: Amount of pressure drop (MPa Check
- Page 78 and 79: 45° Check valve (2) ●C (flange c
- Page 80 and 81: Pilot operated check valve (1) Sub-
- Page 82 and 83: A Y B X Pilot operated check valve
- Page 84 and 85: Pilot operated check valve (2) Flan
- Page 86 and 87: Pressure gauge valve Pressure gauge
- 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 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 138 and 139: Pressure reducing valve - Balanced
- 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
Pressure override characteristics (viscosity 36mm 2 /s (cSt))<br />
RB1M6C<br />
RB1M<strong>10</strong>C<br />
30<br />
30<br />
Pressure (MPa)<br />
20<br />
<strong>10</strong><br />
0 <strong>10</strong> 20 30 40 50 60<br />
Flow rate (L/min)<br />
Pressure (MPa)<br />
20<br />
<strong>10</strong><br />
0 20 40 60 80 <strong>10</strong>0<br />
Flow rate (L/min)<br />
Relief valve – Balanced piston cartridge type pilot operated<br />
Dimension drawing<br />
RB1MC<br />
Machining dimension of manifold<br />
0.02<br />
A<br />
B<br />
Width across flat 6<br />
1.6<br />
0.1<br />
C<br />
Width across flat 19<br />
Width across flat 22<br />
D1<br />
D2<br />
D3<br />
D<br />
A<br />
B<br />
L8<br />
D8<br />
D4<br />
C<br />
3.2<br />
D5<br />
L9<br />
In the case of external<br />
drain<br />
0.9x30<br />
L6<br />
L7<br />
L5<br />
D6<br />
In the case of internal<br />
drain<br />
D7<br />
T<br />
P<br />
Y<br />
R0.4<br />
P<br />
0.5x45<br />
4 L5<br />
L4<br />
1.6<br />
L3<br />
L2<br />
D<br />
D5 L1<br />
P<br />
0.02<br />
Nominal<br />
dimension<br />
D1 H7<br />
D2<br />
D3 H8<br />
D4 ±0.1<br />
D5 D6<br />
(maximum) (maximum)<br />
D7<br />
D8<br />
L1 +0.3<br />
0<br />
+0.1<br />
L2 0<br />
+0.2<br />
L3 0<br />
L4<br />
(finish range)<br />
L5<br />
+0.2<br />
L6 0<br />
L7 ±0.1<br />
L8 L9<br />
(maximum) (maximum)<br />
6<br />
20.5<br />
M20x1<br />
19<br />
16.5<br />
11<br />
6<br />
3<br />
25<br />
36<br />
32<br />
30<br />
24<br />
14<br />
4.8<br />
26<br />
47<br />
79<br />
<strong>10</strong><br />
24.5<br />
M24x1<br />
23<br />
16.5<br />
11<br />
<strong>10</strong>.5<br />
3<br />
25<br />
40<br />
36<br />
34<br />
24<br />
15<br />
5.2<br />
29.7<br />
43<br />
79<br />
2-31
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