3DREP Type Proportional Pressure Reducing Valve of 3-Way Design
- Actuated via proportional solenoids with cen-tral thread and removable coil
- Spring centred control spool
Product features
◉ Directly controlled proportional valves for the control of the pressure and direction of a flow
◉ Actuated via proportional solenoids with cen-tral thread and removable coil
◉ Spring centred control spool
Functional section
The 3-way pressure reducing valve type 3DREP 6.. is directly actuated by proportional solenoids. They con-vert an electrical input signal into a proportional pres-sure output signal.
The proportional solenoids are controlable wet pin DC solenoids with central thread and removable coil. The solenoids are controlled optionally via external control electronics
◉ Design:
The valve mainly comprises of.
- Housing (3) with mounting surface.
- Control spool (5) and(6) and (4)
- Solenoids (1 and 2 ) with control thread
◉ Function:
With the solenoids (1 and 2) de-energised the control spool (5) is held in its centre position by compression springs
The control spool (2) is directly actuated when one of the solenoids is energised
E.g. by energising solenoid "a" (1)
→ The pressure measuring spool (5) and control spool(4) move to the right in proportion to the electrical input signal
→ The connection from P to B and A to T is via orifice form cross-sections with progressive flow characteris-tics
- De-energisation of the solenoid (1)
→ The control spool (4) is retumed to its centre position by the compression springs In the middle postion the connections A and B to T are open, therefore, the pressure fluld can freely fiow to tank. An optional hand overrides makes is possible to move the control spool (4) without energising the solenoid.
◉ Attention!
Unintended use of the hand override can cause uncon-trolled machine movement！
Technical data
| Hydraulic |
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Operating pressure（MPa） |
Port P |
10.5 if excess 10.5mm reinstall the valve type ZDR6DP1 - 350/… in spool port |
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Port T |
3 |
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Max. flow（L/min |
15（△p=5MPa） |
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Degree of contamination（μm） |
Filter recommendation with a minimum retention rate of βx = 75 |
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Hysteresis（%） |
＜ 3 |
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Repeatability accuracy（%） |
＜ 1 |
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Repeatability sentivity（%） |
＜ 1 |
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Reversal span（%） |
＜ 1 |
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Pressure fluid |
Mineral oil(for NBR seal)Phosphate est(for PPM seal) |
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Viscosity range（mm²S） |
1.8 to 380 |
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Pressure fluid temperature range（°C） |
-20 to +70 |
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Installation |
optional, preferably horizontal |
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Weight（kg） |
Type C 2.6; Type A/B 1.5 |
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| Electrical, Solenoid | ||
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Voltage type |
DC24V |
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Nominal current per solenoid（A） |
0.8 |
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Max current per solenoid（A） |
＜ 0.02 |
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Solenoid coi resistance（Ω） |
Cold value at 20°C |
19.5 |
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Max. warm value |
28.8 |
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Working state |
continious |
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Condition temperature（°C） |
--- +50 |
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Coil temperature（°C） |
--- +150 |
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Protection to DIN 40 050 |
IP 65 |
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Electrical connections 3DREP |
with component plug to DIN 43 650 - plug - type connector to DIN 43 650 - AgNi(1.5) |
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Electrical connections 3DREPE |
with component plug to DIN 43 650 - plug - type connector to DIN 43 650 - AgNi(1.5) |
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Characteristic curves
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