ZDR6DB3-4X/80YMV/60
Manufacturer: Bosch Rexroth
Material #: R901137854
Model : ZDR6DB3-4X/80YMV/60
***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 ZDR6DB3-4X/80YMV/60 (R901137854) is a high-performance direct operated pressure reducing valve designed for sandwich plate mounting with the capability to limit secondary circuit pressure. This valve is engineered to precisely reduce system pressure through its robust construction, which includes a housing, control spool, compression spring, and an adjustment mechanism. It offers versatility through various versions; version A permits free flow from channel A to A with an integrated check valve for reverse flow.
This model features internal control signal and pilot oil supply from channel A in version A and from channel P in versions P and B. The secondary pressure can be conveniently set via the adjustable component, ensuring constant pressure levels are maintained despite external force effects. The valve's initial position allows unrestricted flow of hydraulic fluid, while any excess pressure is directed back into the tank to prevent further increases.
Additionally, the ZDR6DB3-4X/80YMV/60 provides external leakage oil drainage from the spring chamber and includes a pressure gauge connection for monitoring secondary pressure directly at the valve. It adheres to ISO porting patterns and comes in various adjustment types such as rotary knob and sleeve with hexagon, some of which feature protective caps or scales for precise adjustments.
The unit is available in different sizes and component series with maximum operating pressures and flow rates specified per model. Its corrosion-protected design ensures longevity even in demanding operational environments. Overall, this Bosch Rexroth valve stands out for its reliability in maintaining desired system pressures across a range of hydraulic applications.
$798.00 USD
More are expected on April 21, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 21, 2025 when ordered in
This product is eligible for factory repair.
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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