DR30-4-5X/200Y
Manufacturer: Bosch Rexroth
Material #: R900508498
Model : DR30-4-5X/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 DR30-4-5X/200Y (R900508498) is a sophisticated pressure reducing valve, designed for secondary circuit control. This valve is a pilot-operated device, featuring a main valve with a spool insert and a pilot control valve equipped with an adjustable pressure element. It operates on the principle that in its rest position, the valve allows unrestricted hydraulic fluid flow from channel B to channel A through the main spool insert. The pressure in channel A is balanced against the force of an adjustable spring in the pilot control valve, which controls the opening and closing of the ball to maintain desired pressure levels.
The DR30-4-5X/200Y provides precise pressure reduction by achieving equilibrium between the channel A pressure and the spring setting. The external pilot oil return ensures consistent operation by directing oil back into the tank via a control line. For situations requiring free return flow from channel A to channel B, an optional check valve can be installed when subplate mounting.
This model also includes a pressure gauge connection for monitoring reduced pressure in channel A, ensuring operational accuracy and safety. The DR30-4-5X/200Y is versatile with several adjustment types available: rotary knob, sleeve with hexagon and protective cap, lockable rotary knob with scale, or rotary knob with scale. It supports various mounting options such as subplate mounting according to ISO standards or threaded connections and can be used as a cartridge valve.
With its maximum operating pressure of 315 bar and maximum flow rate capabilities up to 120 l/min (depending on size), this component is suitable for high-performance hydraulic systems requiring precise pressure regulation. The DR series comes in different sizes and component series X designations to cater to diverse application needs while maintaining robust performance under demanding conditions.
$1,806.00 USD
More are expected on October 21, 2024
Status: This product is temporarily out of stock.
Qty: Delivered as early as October 21, 2024 when ordered in
This product is eligible for factory repair.
Pressure valves type DR are pilot-operated pressure reducing valves controlled from the secondary circuit.
The pressure reducing valves basically consist of the main valve (1) with main spool insert (3) and pilot control valve (2) with pressure adjustment element.
Basic principle:
In rest position, the valves are open. Hydraulic fluid can flow via the main spool insert (3) from channel B to channel A without restrictions. The pressure applied in channel A acts on the bottom of the main spool. Simultaneously, pressure is applied via the nozzle (4) to the spring-loaded side of the main spool (3) and via channel (5) to ball (6) in the pilot control valve (2). Similarly, it acts via nozzle (7), control line (8), check valve (9) and nozzle (10) on the ball (6). Depending on the setting of the spring (11), pressure builds up upstream of the ball (6), in channel (5) and in the spring chamber (12) holding the control spool (13) in open position. The hydraulic fluid in channel B can flow via the main spool insert (3) to channel A without restrictions until a pressure builds up in channel A exceeding the value set at the spring (11) and opening the ball (6). The control spool (13) is moved into closing direction.
The desired reduced pressure is reached if there is a balance between the pressure in channel A and the pressure set at the spring (11).
The pilot oil return from the spring chamber (14) is always realized externally via the control line (15) into the tank.
For the free return flow from channel A to channel B, a check valve (16) can optionally be installed.
A pressure gauge connection (17) enables control of the reduced pressure in channel A.
Type DR..-4-5X/...Y...
(measured with HLP46, ϑOil = 40 ±5 °C)
Outlet pressure pA dependent on the flow qV (B to A)
Minimum set pressure pAmin dependent on the flow qV (B to A)
The characteristic curves apply to the pressure at the valve outlet pT = 0 bar across the entire flow range.
Δp-qV characteristic curve (B to A; minimum adjustable pressure differential)
Pilot flow dependent on flow (B to A) and pressure differential
Δp-qV characteristic curves via check valve (A to B)
Type DR…YM
Type DR…Y
Type DRC…; cartridge valve
Dimensions in mm
|
1 |
Name plate |
|
2.1 |
Y port for pilot oil return, external |
|
2.2 |
Port Y optionally for external pilot oil return |
|
3 |
Adjustment type "4" |
|
4 |
Adjustment type "5" |
|
5 |
Adjustment type "6" |
|
6 |
Adjustment type "7" |
|
7 |
Hexagon SW10 |
|
8 |
Space required to remove the key |
|
9 |
Valve mounting bores |
|
10 |
Seal rings |
|
11 |
Main spool insert |
|
12 |
Seal ring |
|
13 |
Seal ring |
|
14 |
Seal ring |
|
15 |
Support ring |
|
16 |
Support ring |
Valve mounting screws (separate order)
4 hexagon socket head cap screws, metric
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
Type DR…; threaded connection
Dimensions in mm
|
1 |
Name plate |
|
2.1 |
Y port for pilot oil return, external |
|
3 |
Adjustment type "4" |
|
4 |
Adjustment type "5" |
|
5 |
Adjustment type "6" |
|
6 |
Adjustment type "7" |
|
7 |
Hexagon SW10 |
|
8 |
Space required to remove the key |
|
9 |
Valve mounting bores |
|
17 |
Pressure gauge connection |
|
NG |
D1 |
ØD2 |
T1 |
|
mm |
mm |
||
| 10 | G1/2 | 34 | 14 |
| 16 (Typ DR...15) | G3/4 | 42 | 16 |
| 25 (Typ DR..20) | G1 | 47 | 18 |
| 25 (Typ DR...25) | G1 1/4 | 58 | 20 |
| 32 (Typ DR...30) | G1 1/2 | 65 | 22 |
Type DR…; subplate mounting
Dimensions in mm
|
1 |
Name plate |
|
2.1 |
Y port for pilot oil return, external |
|
2.2 |
Port Y optionally for external pilot oil return |
|
3 |
Adjustment type "4" |
|
4 |
Adjustment type "5" |
|
5 |
Adjustment type "6" |
|
6 |
Adjustment type "7" |
|
7 |
Hexagon SW10 |
|
8 |
Space required to remove the key |
|
9 |
Valve mounting bores |
|
17 |
Pressure gauge connection |
|
18 |
Identical seal rings for ports A and B |
|
Identical seal rings for ports X and Y |
|
|
19 |
Port X without function (blind bore) |
|
20 |
Locking pin |
Subplate mounting:
Subplates (separate order)
Size 10G 460/01 (G3/8)
G 461/01 (G1/2)
Size 20G 412/01 (G3/4)
G 413/01 (G1)
Size 30G 414/01 (G1 1/4)
G 415/01 (G1 1/2)
|
1 |
Notice! Bore Ø32 can cut into Ø45 at any position. However, it must be observed that the connection bores and valve mounting bore are not damaged! |
|
2 |
Support ring and seal rings are to be inserted into this bore before assembly of the main spool! |
|
3 |
Nozzle, separate order |
Valve mounting screws (separate order)
Size 104 hexagon socket head cap screws, metric
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
Size 204 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
Size 306 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
|
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 |
| 16 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 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 |
| 25 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 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 |
Valve mounting screws (separate order)
4 hexagon socket head cap screws, metric
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
Installation bore
Dimensions in mm
Dimensions in mm
|
1 |
Notice! Bore Ø32 can cut into Ø45 at any position. However, it must be observed that the connection bores and valve mounting bore are not damaged! |
|
2 |
Support ring and seal rings are to be inserted into this bore before assembly of the main spool! |
|
3 |
Nozzle, separate order |
Valve mounting screws (separate order)
Size 104 hexagon socket head cap screws, metric
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
Size 204 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
Size 306 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
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