DZ20-3-5X/200Y
Manufacturer: Bosch Rexroth
Material #: R900597508
Model : DZ20-3-5X/200Y
***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 DZ20-3-5X/200Y (R900597508) is a sophisticated pilot-operated pressure sequence valve designed for the pressure-dependent connection of secondary hydraulic systems. This valve is notable for its versatility and can function as a preload, sequencing, or changeover valve, suitable for subplate mounting with a porting pattern according to ISO standards. It includes a main valve with a spool insert and a pilot control valve equipped with an adjustment type, along with an optional check valve for enhanced functionality.
The DZ20-3-5X/200Y operates by utilizing the pressure in channel A to act on the pilot spool in the pilot control valve. When the pressure in channel P surpasses the set value on the spring, it triggers the pilot spool to move against this spring force. This action allows hydraulic fluid from the main spool's spring-loaded side to flow into channel B, causing a pressure drop that moves the main spool and opens connections from channel A to B. The design ensures that any leakage at the pilot spool is internally directed into channel B.
Bosch Rexroth has engineered this valve with different configurations denoted by X and Y variants—each signifying external control line inputs or requirements for directing leakage to a tank via depressurized connections. The valve's size and component series are optimized for maximum operating pressures and flow rates, ensuring reliable performance in demanding applications.
Additionally, users can select from various adjustment types including rotary knobs (with or without scales), sleeves with hexagons and protective caps, or lockable rotary knobs with scales—providing flexibility and precision during operation. An optional check valve can be installed for free return flow when higher pressures are encountered in secondary circuits.
In summary, Bosch Rexroth's DZ20-3-5X/200Y offers robust construction and precise control for complex hydraulic systems requiring reliable sequencing operations.
$1,488.00 USD
More are expected on April 25, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 25, 2025 when ordered in
This product is eligible for factory repair.
The valve type DZ is a pilot-operated pressure sequence valve.
It is applied for pressure-dependent connection of a second system.
The pressure sequence valve basically consists of main valve (1) with main spool insert (7) and pilot control valve (2) with adjustment type and optional check valve (3).
According to the pilot oil supply and return and the respective function, the following differentiation is made:
Preload valve type DZ. . -.-5X/… (control lines 4.1, 12 and 13 open; control lines 4.2, 14 and 15 closed)
The pressure applied in channel A acts via the control line (4.1) on the pilot spool (5) in the pilot control valve (2). Simultaneously, the pressure in channel A acts via the nozzle (6) on the spring-loaded side of the main spool (7). If the pressure in channel P exceeds the value set at the spring (8), the pilot spool (5) is moved against the spring (8). The hydraulic fluid on the spring-loaded side of the main spool (7) now flows via the nozzle (9), the control edge (10) and control lines (11) and (12) into channel B. Due to this, a pressure drop occurs at the main spool (7). The main spool (7) is moved upwards and opens the connections from channel A to B. The pressure in channel A exceeds the value in channel B by the value set at the spring (8). The leakage occurring at the pilot spool (5) is directed internally via the spring chamber (17) of the pilot control valve and the control line (13) into channel B. If the pressure in the secondary circuit (channel B) exceeds the pressure in channel A, a check valve (3) may be optionally installed for free return flow.
Preload valve type DZ. . -.-5X/.X… (control lines 4.2, 12 and 13 open; control lines 4.1, 14 and 15 closed)
In principle, the function of this valve corresponds to the function of type DZ. . -.-5X/…. With version "X", however, the opening signal is received externally via control line X (4.2).
Sequence valve type DZ. . -.-5X/.Y… (control lines 4.1, 12 and 14 or 15 open; control lines 4.2 and 13 closed)
In principle, the function of this valve corresponds to the function of type DZ. . -.-5X/…. At version "Y", however, the leakage occurring at the pilot spool (5) has to be directed via line (14) or (15) to the tank by means of a depressurized connection. The pilot oil is directed via line (11) and (12) into channel B.
Circulation valve type DZ. . -.-5X/.XY… (control lines 4.2, 14 or 15 open; control lines 4.1, 12 and 13 closed)
In principle, the function of this valve corresponds to the function of type DZ. . -.-5X/…. With version "XY", however, the opening signal is received externally via control line X (4.2). The pilot oil at the pilot spool (16) bore and occurring leakage have to be directed via line (14) or (15) to the tank by means of a depressurized connection.
(measured with HLP46, ϑOil = 40 ±5 °C)
Inlet pressure dependent on the flow (A → B)
Minimum inlet pressure 1) dependent on the flow (A → B)
| 1) Circulation pressure with version "X" |
The characteristic curves apply to the pressure at the valve outlet pT = 0 bar across the entire flow range.
Circulation pressure dependent on the flow (A → B) (only version "XY")
Δp-qV characteristic curves via check valve (B → A)
Type DZ. . -.-5X/.M…
Type DZ. . -.-5X/.XM…
Type DZ. . -.-5X/.YM…
Type DZ. . -.-5X/.XYM…
Type DZ. . -.-5X/…
Type DZ. . -.-5X/.X…
Type DZ. . -.-5X/.Y…
Type DZ. . -.-5X/.XY…
Subplate mounting
Dimensions in mm
|
1 |
Name plate |
|
2.1 |
Port Y for external pilot oil return at version "XY" or spring chamber discharge at version "Y" |
|
2.2 |
Port Y (G1/4) optionally for external pilot oil return at version "XY" or spring chamber discharge at version "Y" |
|
4 |
Adjustment type "1" |
|
5 |
Adjustment type "2" |
|
6 |
Adjustment type "3" |
|
7 |
Adjustment type "7" |
|
8 |
Hexagon SW10 |
|
9 |
Space required to remove the key |
|
10 |
Identical seal rings for ports A and B |
|
11 |
Identical seal rings for ports X, Y, Y1 and Y2 |
|
12 |
Valve mounting bores |
|
13 |
Locking pin |
Cartridge valve
Dimensions in mm
|
1 |
Name plate |
|
2.2 |
Port Y (G1/4) optionally for external pilot oil return at version "XY" or spring chamber discharge at version "Y" |
|
3.1 |
Port Y1 at cartridge valve for pilot oil return at version "XY" or spring chamber discharge at version "no code", "X" and "Y" |
|
3.2 |
Port Y2 at cartridge valve for pilot oil return at version "no code", "X" and "Y" |
|
4 |
Adjustment type "1" |
|
5 |
Adjustment type "2" |
|
6 |
Adjustment type "3" |
|
7 |
Adjustment type "7" |
|
8 |
Hexagon SW10 |
|
9 |
Space required to remove the key |
|
11 |
Identical seal rings for ports X, Y, Y1 and Y2 |
|
12 |
Valve mounting bores |
|
14 |
Main spool insert with nozzle |
|
15 |
Seal ring (main spool) |
|
16 |
Support ring (main spool) |
Installation bore
Dimensions in mm
Dimensions in mm
|
17 |
Versions "X" and "XY" without bore |
|
18 |
Notice! |
|
19 |
Support ring and seal ring are to be inserted into this bore before assembly of the main spool. |
Subplates (separate order)
NG10G 460/01 (G3/8)
G 461/01 (G1/2)
NG25G 412/01 (G3/4)
G 413/01 (G1)
NG32G 414/01 (G1 1/4)
G 415/01 (G1 1/2)
Valve mounting screws (separate order)
For reasons of stability, exclusively the following valve mounting screws may be used:
Subplate mounting:
NG104 x ISO 4762 - M10 x 50 - 10.9-flZn-240h-L
at friction coefficient μtotal = 0.09 to 0.14,
Tightening torque MA = 60 Nm ±10 %,
material no. R913000471
NG254 x ISO 4762 - M10 x 60 - 10.9-flZn-240h-L
at friction coefficient μtotal = 0.09 to 0.14,
Tightening torque MA = 60 Nm ±10 %,
material no. R913000116
NG326 x ISO 4762 - M10 x 70 - 10.9-flZn-240h-L
at friction coefficient μtotal = 0.09 to 0.14,
Tightening torque MA = 60 Nm ±10 %,
material no. R913000126
Cartridge valve:
4 x ISO 4762 - M8 x 40 - 10.9-flZn-240h-L
at friction coefficient μtotal = 0.09 to 0.14,
Tightening torque MA = 31 Nm ±10 %,
material no. R913000205
The tightening torques are guidelines when using screws with the specified friction coefficients and when using a manual torque wrench (tolerance ±10 %).
|
NG |
L1 |
L2 |
L3 |
L4 |
L5 |
L6 |
L7 |
L8 |
L9 |
L10 |
B1 |
B2 |
B3 |
B4 |
B5 |
H1 |
H2 |
H3 |
|
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
|
| 10 | 96 | 35.5 | 33 | 42.9 | 21.5 | - | 7.2 | 21.5 | 31.8 | 35.8 | 85 | 50 | 66.7 | 58.8 | 7.9 | 112 | 92 | 28 |
| 25 | 116 | 37.5 | 35.4 | 60.3 | 39.7 | - | 11.1 | 20.6 | 44.5 | 49.2 | 102 | 59.5 | 79.4 | 73 | 6.4 | 122 | 102 | 38 |
| 32 | 145 | 33 | 29.8 | 84.2 | 59.5 | 42.1 | 16.7 | 24.6 | 62.7 | 67.5 | 120 | 76 | 96.8 | 92.8 | 3.8 | 130 | 110 | 46 |
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