The pilot operated three-way proportional pressure reducing valve 3DR16P-5X is a high-performance hydraulic control element. Huade’s proportional pressure reducing valve 3DR16P-5X is mainly used to reduce and limit system pressure to ensure that the hydraulic system can maintain a stable pressure level. 3DR16P-5X, where "3DR" represents the three-way pressure reducing valve series, "16" represents the size, "P" represents pressure control, and "5X" represents a configuration code. Huade’s 3DR16P-5X proportional valve can replace the same model offered by Rexroth.
Proportional Pressure Reducing Valve 3DR16P-5X
TECHNICAL REPLACEMENT NOTICE
This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PROPORTIONAL-PRESSURE-REDUCING-VALVE-3DR16P-5X equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.
• Product features: Sleeve with hexagon and protective cap
• Specifications:Proportional Pressure Reducing Valve 3DR16P-5X series,
• Applications: hydraulic systems
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ISO 4401 Mounting
ISO 4401 / Rexroth interchangeable
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Technical Data Sheet
- Product Overview
- Features & Applications
- Technical Parameters
Product Overview
Key Features
- Valve for reducing (P to A) and limiting (A to T) a system
- For subplate mounting
- 4 pressure ratings
- 4 adjustment elements, optional:
- ●Rotary knob
- ● Sleeve with hexagon and protective cap
- ● Lockable rotary knob with scale
- Rotary knob with scale
Industrial Applications
- Proportional pressure reducing valve 3DR16P-5X is suitable for hydraulic systems that require high-precision pressure control, such as injection molding machines, construction machinery, and high-precision manufacturing equipment.
- Pressure control valves of type 3DR are pilot operated 3-way pressure reducing valves with pressure relief function for the secondary circuit. They are used to reduce a system pressure.
- The pressure reducing valve basically consists of main valve (1) with control spool (2) and pilot control valve (3) with pressure adjustment element (10).
- In the starting position, the valve is open. Hydraulic fluid can flow from channel P to channel A without any restrictions.
- The pressure in channel A is applied via bore (4) to the spool area opposite to compression spring (9). At the same time, pressure is applied via orifice (6) to the spring-loaded side of control spool (2) and via channel (5) to ball(7) in pilot control valve (3).
- Depending on the setting of compression spring (11) pressure builds up upstream of ball (7) and in channel(5) and holds control spool (2) in the open position. Hydraulic fluid flows from channel P via control spool (2) to channel A until pressure builds up in channel A, which reaches a higher value than the pressure value set on compression spring (11) and lifts off ball (7).
- Control spool (2) moves to the closed position.The required reduced pressure is reached when the pressure in channel A and the pressure value set on compression spring (11) are in
- Balance.
- When the pressure in channel A increases further due to external forces acting on the actuator, control spool (2) is pushed further against compression spring (9). This opens a connection between channel T and channel A via control land (8) on control spool (2). The amount of hydraulic fluid discharged to tank ensures that the pressure will no longer increase.
- The pilot oil is always drained externally from spring chamber(12) via pilot line (13) at port Y. It must always be returned at zero pressure to tank.
- Pressure gauge port(14) allows the reduced pressure in channel A to be checked.
Technical Parameters
Mechanical ratings and operating limits for the Proportional Pressure Reducing Valve 3DR16P-5X:
| Parameter / Dimension Name | Value / Rating Specification |
|---|---|
| General | General |
| Weight kg - 8 | 8 |
| Installation position - Optional | Optional |
| Ambient temperature range ℃ - -30 to+50 | -30 to+50 |
| Hydraulic | Hydraulic |
| Nominal pressure bar - 315 | 315 |
| Maximum operating pressure - -Port P bar | 315 |
| - -Port A bar | 250 |
| - - Port Y bar | Separately and pressureless to tank |
| Pressure setting - -Minimum bar | Depending on flow |
| - -Maximum bar | 50; 100;200;250 |
| Maximum flow L/min - 220 | 220 |
| Hydraulic fluid - Mineral oil(HL, HLP) to DIN 51524 1); fast bio-degradable hydraulic fluids to VDMA 24568(see also RE 90221); HETG (rape seed oil) 1); HEPG (polyglycols) 2); HEES (synthetic esters) 2); other hydraulic fluids on request | Mineral oil(HL, HLP) to DIN 51524 1); fast bio-degradable hydraulic fluids to VDMA 24568(see also RE 90221); HETG (rape seed oil) 1); HEPG (polyglycols) 2); HEES (synthetic esters) 2); other hydraulic fluids on request |
| Hydraulic fluid temperature range ℃ - -30 to +80(NBR seals) -20 to +80(FKM seals) | -30 to +80(NBR seals) -20 to +80(FKM seals) |
| Viscosity range mm2/s - 10 to 800 | 10 to 800 |
| Permissible max. degree of contamination of the hydraulic fluid- cleanliness class to ISO 4406(C) - Class 20/18/15 3 | Class 20/18/15 3 |
