PRESSURE RED.VALVE INTERMEDIATE PLATE ZDR6DA3-4X/75Y
Manufacturer: Bosch Rexroth
Material #: R900410864
Model : ZDR6DA3-4X/75Y
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth ZDR6DA3-4X/75Y (R900410864) is a high-performance industrial hydraulic valve specifically designed for reliable pressure reduction to a pre-set value. This spool valve is direct operated and features a pressure adjustment range with a lockable rotary knob that includes a scale for precise settings. It is characterized by its spool symbol A-A and is capable of handling a maximum pressure, making it suitable for demanding applications.
The ZDR6DA3-4X/75Y model offers versatility with multiple ports and mechanical actuation. It has been engineered to accommodate a substantial maximum flow rate, ensuring efficient system performance. The valve's sandwich plate connection design follows the NFPA T3.5.1 R2 D03 standard and also aligns with ISO 4401 porting patterns, allowing for straightforward integration into various hydraulic systems.
This model comes in different versions, including A, P, and B, each providing specific functionalities such as free flow back in version A through an optional check valve. The robust construction of the ZDR6DA3-4X/75Y includes NBR seals which are compatible with several types of hydraulic fluids like HL, HLP, HLPD, HVLP, HVLPD, and HFC.
Furthermore, this Bosch Rexroth valve ensures external leakage oil drainage from the spring chamber and features a pressure gauge connection for monitoring secondary pressure directly at the valve. Its corrosion-protected design adds to its durability in harsh working environments.
In summary, the Bosch Rexroth ZDR6DA3-4X/75Y (R900410864) stands out as an efficient solution for systems requiring precise pressure reduction capabilities within various hydraulic applications. Its robust design and flexible configuration options make it well-suited to meet the needs of sophisticated industrial operations.
$728.00 USD
More are expected on April 22, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 22, 2025 when ordered in
This product is eligible for factory repair.
Size 6, A2 → A1, mechanical
Industrial hydraulic valve in a high performance range. Reliable pressure reduction to setting value.
Unpacked Weight: 1.52 kg
Sandwich plate valve Porting pattern according to ISO 4401-03-02-0-05 (with or without locating hole) 4 pressure ratings 4 adjustment types:
• Rotary knob
• Sleeve with hexagon and protective cap
• Lockable rotary knob with scale
• Rotary knob with scale Pressure reduction in channel A, B or channel P Check valve, optional (version “A” only) Corrosion-protected design
The valve type ZDR is a direct operated pressure reducing valve in sandwich plate design with pressure limitation of the secondary circuit. It is used to reduce the system pressure.
The pressure reducing valve basically comprises housing (1), control spool (2), compression spring (3), adjustment type (4) and an optional check valve.
The secondary pressure is set via the adjustment type (4).
Version "A"
The valve is open in initial position. Hydraulic fluid can flow from channel A➀ to channel A➀ without restrictions. The pressure in channel A➀ is simultaneously applied via the control line (5) at the piston area opposite the compression spring (3). If the pressure in channel A➀ exceeds the value set at the compression spring (3), the control spool (2) is pushed against the compression spring (3) to control position and keeps the set pressure in channel A➀ at a constant level.
Control signal and pilot oil are supplied internally via the control line (5) from channel A➁.
If the pressure in channel A➀ increases further due to an external force effect at the actuator, it pushes the control spool (2) even further against the compression spring (3).
In this way, channel A➀ is connected to the tank via the control edge (9) at the control spool (2) and the housing (1). So much hydraulic fluid is discharged into the tank that the pressure does not increase any further.
The leakage oil drain from the spring chamber (7) is always effected externally via the bore (6) and channel T (Y).
A pressure gauge connection (8) allows for the control of the secondary pressure at the valve.
A check valve can be used for free flow back from channel A➀ to A➀ with version “A”.
Versions “P” and “B”
For version “P”, the pressure reduction is effected in channel P➀. Control signal and pilot oil are supplied internally from channel P➀.
For version “B”, the pressure is reduced in channel P➀; but the pilot oil is extracted from channel B.
Notice:
If the directional valve is in spool position P to A, the pressure in channel B may not exceed the set secondary pressure. Otherwise, there is pressure reduction in channel A.
Type ZDR 6 DA1-4X/.YM…
|
① |
component side |
|
② |
plate side |
(measured with HLP46, ϑOil = 40 ±5 °C)
pA-qV characteristic curves
Version "A"
pA-qV characteristic curves
Version "B" and "P"
Δpmin-qV characteristic curves
Version "A"
Δpmin-qV characteristic curves
Version "B" and "P"
Δp-qV characteristic curves
Notices:
The curve development is maintained if the pressure is set lower according to the pressure rating. The characteristic curves apply to the pressure at the valve output pT = 0 bar across the entire flow range.Version "P...YM"
Version "A...YM"
Version "B…YM"
Version "A...Y"
|
① |
component side |
|
② |
plate side |
Version "A"
Dimensions in mm
|
|
Required surface quality of the valve contact surface |
|
➀ |
component side – porting pattern according to ISO 4401-03-02-0-05 (with or without locating hole); (with locating hole Ø3 x 5 mm deep) |
|
➁ |
plate side – Porting pattern according to ISO 4401-03-02-0-05 (with or without locating hole); (with locating hole Ø3 x 5 mm deep for locking pin ISO 8752-3x8-St, material no. R900005694, separate order) |
|
1 |
Name plate |
|
2 |
Adjustment type "1" |
|
3 |
Adjustment type "2" |
|
4 |
Adjustment type "3" |
|
5 |
Adjustment type "7" |
|
6 |
Space required to remove the key |
|
7 |
Valve mounting bores |
|
8 |
Lock nut SW24 |
|
9 |
Hexagon SW10 |
|
10 |
Identical seal rings for ports A, B, P, T (Y) |
|
11 |
Pressure gauge connection G1/4; 12 mm deep; internal hexagon SW6 |
Valve mounting screw (separate order)
4 hexagon socket head cap screws ISO 4762-M5-10.9
Notices:
Length and tightening torque of the valve mounting screws must be calculated according to the components mounted under and over the sandwich plate valve. The dimensions are nominal dimensions which are subject to tolerances.Version "B" and "P"
Dimensions in mm
|
|
|
Required surface quality of the valve contact surface |
|
➀ |
component side – porting pattern according to ISO 4401-03-02-0-05 (with or without locating hole); (with locating hole Ø3 x 5 mm deep) |
|
➁ |
plate side – Porting pattern according to ISO 4401-03-02-0-05 (with or without locating hole); (with locating hole Ø3 x 5 mm deep for locking pin ISO 8752-3x8-St, material no. R900005694, separate order) |
|
1 |
Name plate |
|
2 |
Adjustment type "1" |
|
3 |
Adjustment type "2" |
|
4 |
Adjustment type "3" |
|
5 |
Adjustment type "7" |
|
6 |
Space required to remove the key |
|
7 |
Valve mounting bores |
|
8 |
Lock nut SW24 |
|
9 |
Hexagon SW10 |
|
10 |
Identical seal rings for ports A, B, P, T (Y) |
|
11 |
Pressure gauge connection G1/4; 12 mm deep; internal hexagon SW6 |
Valve mounting screw (separate order)
4 hexagon socket head cap screws ISO 4762-M5-10.9
Notices:
Length and tightening torque of the valve mounting screws must be calculated according to the components mounted under and over the sandwich plate valve. The dimensions are nominal dimensions which are subject to tolerances.Related Products
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