PREFILL VALVE ZSF125F1-1-2X/M/01
Manufacturer: Bosch Rexroth
Material #: R901089756
Model : ZSF125F1-1-2X/M/01
***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 ZSF125F1-1-2X/M/01 (R901089756) is a mechanically actuated industrial hydraulic valve designed for high-performance applications. This seat valve is pilot-operated and features a high-pressure connection, with an additional port for enhanced functionality. It is constructed to allow pipe threading in accordance with ISO and DIN EN 24340 standards. The spool symbol for this model indicates the A + B configuration.
With a maximum pressure rating of up to 350 bar, this product from Bosch Rexroth's product group ID falls into the category of robust and reliable hydraulic components. It boasts two ports and is actuated mechanically. The ZSF125F1-1-2X/M/01 valve has a size designation of 10, indicating its capacity within the product range, and it supports an interim assembly type of connection.
The nominal flow rate for this valve is specified by the manufacturer, ensuring precise control in hydraulic systems. Each unit comes with its own individual connection diagram and offers two switching positions. The weight of the valve is 4.3 kg, making it substantial yet manageable for various installations.
Seals made from NBR (Nitrile Butadiene Rubber) are utilized in this model, providing compatibility with a range of hydraulic fluids such as HL, HLP, HLPD, HVLP, HVLPD, and HFC types.
Bosch Rexroth advises that for sizes 6 through 30, a separate nozzle must be ordered for channel P of the upstream directional valve. This nozzle's diameter should be matched to the prefill valve size as outlined in provided schematics to avoid increased dynamic loads that could negatively impact operating time.
This specific model falls under Type ZSF NG 10 series X and X2. It can operate at a maximum pressure of 350 bar and handles maximum flow rates up to 150 l/min. The integrated throttle check valve feature further enhances its versatility in various directional valve setups across multiple sizes including NG6, NG10, NG16, NG25 and NG32.
$4,196.00 USD
More are expected on August 11, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as August 11, 2025 when ordered in
This product is eligible for factory repair.
Size 125, A → B, mechanically actuated
Industrial hydraulic valve in a high performance range.
Unpacked Weight: 26.020 kg
Pilot operated check valve in sandwich plate design Directional valve set-up, optional High-pressure connection (NG32 … 160) Integrated throttle check valve (NG50, 63, 80 and 200)
Notice:
With size 32, 40, 100, 125, 160 a nozzle (separate order) must imperatively be provided in channel P of the upstream directional valve. The nozzle diameter is to be designed according to the prefill valve size (see "Schematics").
In case of non-compliance, increased dynamic loads may occur having detrimental effects on the operating time.
Type ZSF… (NG32, 40, 100, 125, 160)
Type ZSF… (NG200)
general
|
Size |
32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | 200 | |
|
Weight |
kg |
3.5 | 4.2 | 5.5 | 7 | 10 | 15 | 26 | 47 | 150 |
|
Installation position 1) |
any | |||||||||
|
Ambient temperature range |
°C |
-30 … +80 | ||||||||
| 1) | Working direction of the control spool |
hydraulic
|
Size |
32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | 200 | ||
|
Maximum operating pressure |
Port P |
bar |
350 | ||||||||
|
Anschluss A |
bar |
16 | |||||||||
|
Port B |
bar |
350 | |||||||||
|
Anschluss X |
bar |
150 | |||||||||
|
Cracking pressure 1) |
bar |
≈ 0.12 | |||||||||
|
Flow (Δp = 0.3 bar) |
Depending on the case of application, see below | ||||||||||
|
Druckflüssigkeit |
see table | ||||||||||
|
Hydraulic fluid temperature range |
°C |
-30 … +70 | |||||||||
|
Viscosity range |
mm²/s |
10 … 800 | |||||||||
|
Maximum admissible degree of contamination of the hydraulic fluid 2) |
Class 20/18/15 according to ISO 4406 (c) | ||||||||||
| 1) | Pressure differential at the main poppet for overcoming the spring force |
| 2) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter. |
|
Hydraulic fluid |
Classification |
Suitable sealing materials |
Standards |
Data sheet |
|
|
Mineral oils |
HL, HLP, HLPD, HVLP, HVLPD |
NBR, FKM |
DIN 51524 |
90220 |
|
|
Bio-degradable |
Insoluble in water |
HETG |
FKM |
ISO 15380 |
90221 |
|
HEES |
FKM |
||||
|
Soluble in water |
HEPG |
FKM |
ISO 15380 |
||
|
Flame-resistant |
Water-free |
HFDU (glycol base) |
FKM |
ISO 12922 |
90222 |
|
HFDU (ester base) |
FKM |
||||
|
HFDR |
FKM |
||||
|
Containing water |
HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) |
NBR |
ISO 12922 |
90223 |
|
|
Important information on hydraulic fluids: For further information and data on the use of other hydraulic fluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The ignition temperature of the hydraulic fluid used must be 50 K higher than the maximum surface temperature. Flame-resistant – containing water: Maximum pressure differential 210 bar, otherwise, increased cavitation erosion Life cycle as compared to operation with mineral oil HL, HLP 30 … 100% Maximum hydraulic fluid temperature 60 °C Bio-degradable and flame-resistant: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system. |
|||||
Flow qV in l/min (A to B) for different cases of application (Δp = 0,3 bar)
|
Size |
32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | 200 | |
|
Case of application 1 |
l/min |
200 | 300 | 500 | 800 | 1200 | 1900 | 3000 | 4200 | 7000 |
|
Case of application 2 |
l/min |
170 | 250 | 400 | 650 | 1000 | 1600 | 2600 | 3900 | 6510 |
|
Case of application 3 |
l/min |
140 | 220 | 360 | 560 | 900 | 1400 | 2200 | 3400 | 5670 |
|
Case of application 4 |
l/min |
100 | 150 | 240 | 380 | 620 | 950 | 1500 | 2300 | 3850 |
|
Case of application 5 |
l/min |
70 | 110 | 170 | 280 | 450 | 700 | 1100 | 1690 | 2800 |
Case of application 1
Case of application 2
Case of application 3
Size of the filling tank at least 1.5 x cylinder content
Case of application 4
Case of application 5
Information on case of application 2 to 5
For limit areas, please contact us. It is often enough, to select a pipeline which is one size larger.
Note:
Wrong dimensioning of prefill valve and suction line may cause cavitation and consequential damage.
|
1 |
Cylinders |
|
2 |
Prefill valve |
|
3 |
This sheet is not included in the scope of delivery. With smaller tank dimensions and minimum hydraulic fluid level (a), it prevents the formation of tunnels. |
|
4 |
Observe the supply cross-section |
|
a |
at least 300 mm with extended cylinder |
|
b |
up to 1000 mm with the specified maximum flows |
|
c |
h ≤ 500 mm |
|
h |
300 mm ≤ h < 500 mm |
For applications outside these parameters, please consult us!
(measured with HLP46, ϑOil = 40 ±5 °C)
Size 32, 40, and 50
Pressure differential Δp between ports A and B dependent on the flow qV (A to B).
Size 63, 80 and 100
Pressure differential Δp between ports A and B dependent on the flow qV (A to B).
Size 125, 160, and 200
Pressure differential Δp between ports A and B dependent on the flow qV (A to B).
Without throttle check valve, NG32, 40, 100, 125, 160
Separate, external nozzle fitting required (see "Dimensions - Nozzle fitting")
With throttle check valve, NG50, 63, 80
Throttle check valve installed at the factory; no nozzle required
NG200
Throttle check valve installed at the factory; no nozzle required
NG32 … 160
Dimensions in mm
|
|
Required surface quality of the valve contact surface |
|
1 |
Throttle check valve (only NG50, 63, 80, 200) |
|
2 |
Centering diameter |
|
3 |
Name plate |
|
4 |
Seal rings |
|
5 |
Counterflange (separate order, see "dimensional proposal for counterflange") |
|
6 |
Stroke of main poppet (see "Poppet geometry and determination of the minimum pilot pressure") |
|
7 |
Note: Valve contact face (e.g. pressing cylinders, bearing structures, etc.) must be sufficiently rigid. The prefill valve must not be loaded by bending. |
|
9 |
Space required to remove the mating connector |
|
10 |
Valve mounting screws (separate order) |
|
11 |
Threads for transport device (ring bolts), evenly distributed to circumference |
|
12 |
Measuring point, tightening torque MA = 30 Nm ±10% |
|
13 |
Damping nozzle M8 x 1 |
|
14 |
Additional pressure port; if not used, seal in a hydraulically tight way by means of suitable plug screws. |
|
NG |
B1 |
B2 |
B3 |
B4 |
B5 |
B6 |
ØD1 |
ØD2 |
ØD3 |
D4 |
ØD5 |
ØD6 |
H1 |
H2 |
H3 |
H4 |
P |
T1 |
T2 |
X |
|
|
mm |
mm |
mm |
mm |
mm |
max. mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
min. mm |
||||
| 32 | 65 | 110 | 40 | 55 | 7.5 | 1.5 | 46 | 93 | 110 | ± 0.2 | M16 | 42 | 49.5 | 77 | 50 | 26.5 | 26.5 | G1/2 | 8 | 30 | G1/4 |
| 40 | 70 | 115 | 40 | 55 | 7.5 | 1.5 | 58 | 108 | 125 | ± 0.2 | M16 | 52 | 61.5 | 80 | 50 | 26.5 | 26.5 | G1/2 | 10 | 35 | G1/4 |
| 50 | 110 | 140 | 40 | 55 | 7.5 | 1.5 | 71 | 128 | 145 | ± 0.2 | M16 | 70 | 75.7 | 97 | 50 | 26.5 | 26.5 | G1/2 | 12 | 30 | G1/4 |
| 63 | 115 | 145 | 45 | 55 | 7.5 | 1.5 | 90 | 143 | 160 | ± 0.2 | M16 | 83 | 97.7 | 110 | 55 | 27.5 | 27.5 | G3/4 | 14 | 35 | G1/4 |
| 80 | 125 | 160 | 45 | 55 | 7.5 | 1.5 | 107 | 169 | 190 | ± 0.2 | M20 | 100 | 112 | 123 | 60 | 30 | 30 | G3/4 | 16 | 30 | G1/4 |
| 100 | 140 | 190 | 55 | 55 | 7.5 | 1.5 | 132 | 212 | 240 | ± 0.2 | M27 | 124 | 138.5 | 145 | 65 | 32.5 | 40 | G1 | 25 | 55 | G3/8 |
| 125 | 180 | 210 | 65 | 60 | 0 | 1.5 | 170 | 248 | 280 | ± 0.2 | M30 | 148 | 176 | 215 | 75 | 37.5 | 50 | G1 | 33 | 50 | G3/8 |
| 160 | 220 | 255 | 70 | 60 | 0 | 1.5 | 220 | 310 | 345 | ± 0.2 | M33 | 200 | 233 | 279 | 95 | 48.5 | 68 | G1 1/4 | 55 | 50 | G1/2 |
| 200 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
NG200
Dimensions in mm
|
|
|
Required surface quality of the valve contact surface |
|
1 |
Throttle check valve (only NG50, 63, 80, 200) |
|
3 |
Name plate |
|
4 |
Seal rings |
|
5 |
Counterflange (separate order, see "dimensional proposal for counterflange") |
|
6 |
Stroke of main poppet (see "Poppet geometry and determination of the minimum pilot pressure") |
|
7 |
Note: Valve contact face (e.g. pressing cylinders, bearing structures, etc.) must be sufficiently rigid. The prefill valve must not be loaded by bending. |
|
10 |
Valve mounting screws (separate order) |
|
11 |
Threads for transport device (ring bolts), evenly distributed to circumference |
|
12 |
Measuring point, tightening torque MA = 30 Nm ±10% |
Dimensional proposal for counterflange (pos. 5)
Dimensions in mm
|
|
Required surface quality of the valve contact surface |
|
Size |
32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | 200 | |
|
Maximum operating pressure pmax 1) |
350 bar | |||||||||
|
Recommended flange material |
C22 | S355J2G3 | ||||||||
| 1) | When using other counterflanges than the ones specified here, it may be necessary to reduce the operating pressure. |
Form of the welding gap (15):
Standard version s ≤ 16 gap form 22 DIN 2559 s > 16 gap form 3 DIN 2559 special version see DIN 2559|
NG |
Flange |
Neck |
Raised face |
||||||||||
|
Ød1 |
Ød2 |
ØD |
ØD5+2 |
b |
Øk |
h1 |
Ød3 |
s |
r |
h2 |
Ød4 |
f |
|
|
mm 1) |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm 1) |
mm |
mm |
mm |
mm |
|
| 32 | 48.3 | 18 | 150 | 42 | 22 | 110 | 49 | 64 | 3.2 | 6 | 7 | 88 | 3 |
| 40 | 60.3 | 18 | 165 | 52 | 29 | 125 | 57 | 75 | 3.6 | 6 | 8 | 102 | 3 |
| 50 | 76.1 | 18 | 185 | 70 | 34 | 145 | 64 | 90 | 3.6 | 6 | 10 | 122 | 3 |
| 63 | 88.9 | 18 | 200 | 83 | 43 | 160 | 77 | 105 | 3.6 | 8 | 12 | 138 | 3 |
| 80 | 114.3 | 22 | 235 | 100 | 51 | 190 | 95 | 134 | 3.6 | 8 | 12 | 162 | 3 |
| 100 | 139.7 | 30 | 295 | 124 | 62 | 240 | 116 | 168 | 4 | 8 | 12 | 188 | 3 |
| 125 | 168.3 | 33 | 345 | 148 | 79 | 280 | 138 | 202 | 4.5 | 10 | 12 | 218 | 3 |
| 160 | 219.1 | 36 | 415 | 200 | 118 | 345 | 186 | 256 | 5.9 | 10 | 16 | 285 | 3 |
| 200 | 273 | 39 | 420 | 270 | 100 | 355 | 140 | 292 | 6.5 | 6 | 16 | - | - |
| 1) | For seamless steel pipes, wall thickness 16 according to DIN EN 10220 |
Valve mounting screws, counterflange (separate order)
|
Hexagon socket head cap screw ISO 4762 - 10.9-flZn (or DIN 912 - 10.9-flZn) |
Counterflange |
||||
|
Size |
Dimensions |
Quantity |
Tightening torque MA in Nm (±5 %) 1) |
Material number |
Material number |
|
32 |
M16 x 100 |
4 |
240 |
R913015640 |
R900842693 |
|
40 |
M16 x 110 |
4 |
240 |
R913015642 |
R900825610 |
|
50 |
M16 x 110 |
8 |
240 |
R913015642 |
R900826441 |
|
63 |
M16 x 130 |
8 |
240 |
R913014713 |
R900849622 |
|
80 |
M20 x 140 |
8 |
460 |
R913015675 |
R900862915 |
|
100 |
M27 x 180 |
8 |
1150 |
R913059494 |
R900834583 |
|
125 |
M30 x 200 |
8 |
1600 |
R913015753 |
R900861508 |
|
160 |
M33 x 260 |
12 |
2200 |
R913001904 |
R900846478 |
|
200 |
M36 x 320 |
16 |
2600 |
R913050473 |
R901205467 |
| 1) | Friction coefficient μtotal = 0.09 … 0.14; please adjust in case of changed surfaces; use a manual torque wrench. |
Notice:
The information on the hexagon socket head cap screws (type, length, tightening torque) refers exclusively to the use with the counterflanges listed above.
Poppet geometry and determination of the minimum pilot pressure
Dimensions in mm
|
A1 |
Effective area of the main poppet |
|
A2 |
Effective area of the pilot poppet |
|
A3 |
Effective area of the control spool |
|
s1 |
Stroke of the main poppet |
|
s2 |
Stroke of the control spool |
|
F1 |
Spring force of the valve spring |
|
F2 |
Spring force of the compression spring of the control spool |
|
Vst |
Pilot volume for opening the valve |
|
pÖ |
Cracking pressure (pressure differential at the main poppet for overcoming the spring force F1) |
|
pSt |
Pilot pressure at port X |
|
pB |
System pressure at port B |
|
NG |
A1 |
A2 1) |
A3 |
s1 |
s2 |
F1 |
F2 |
VstX |
Unchecking ratio |
|
|
cm² |
cm² |
cm² |
mm |
mm |
N |
N |
cm³ |
Without pre-decompression |
With pre-decompression 2) |
|
| 32 | 8.04 | 0.5 | 2.01 | 8.5 | 6.5 | 9 … 22 | 58 … 109 | 1.3 | 4 | 0.3 |
| 40 | 13.52 | 0.79 | 3.14 | 10 | 7 | 14 … 29 | 93 … 162 | 2.2 | 4.3 | 0.3 |
| 50 | 21.24 | 1.13 | 4.71 | 12.5 | 9 | 23 … 49 | 149 … 261 | 4.2 | 4.5 | 0.3 |
| 63 | 32.67 | 1.77 | 7.07 | 14.5 | 11 | 35 … 63 | 206 … 348 | 7.8 | 4.6 | 0.3 |
| 80 | 49.02 | 2.54 | 10.18 | 17 | 13 | 57 … 127 | 310 … 579 | 13.2 | 4.8 | 0.3 |
| 100 | 73.13 | 3.8 | 15.9 | 22 | 15 | 81 … 193 | 476 … 952 | 25.5 | 4.6 | 0.2 |
| 125 | 120.76 | 5.72 | 28.27 | 30 | 22.5 | 135 … 319 | 878 … 1,667 | 59.4 | 4.3 | 0.2 |
| 160 | 196.07 | 9.08 | 45.36 | 40 | 27 | 241 … 516 | 1,335 … 2,395 | 122 | 4.3 | 0.2 |
| 200 | 314.16 | - | 78.54 | 48 | 34 | 425 … 850 | 2,389 … 3,822 | 267 | 4 | - |
| 1) | Is omitted for version "without pre-decompression" (ZSF...0...) |
| 2) | Upon request |
Example: Type ZSF32...
pB = 30 bar ;
pSt = 4.0 x 30 bar = 120 bar
Nozzle fitting
|
Size |
32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | 200 | |
|
Nozzle Ø |
mm |
0.8 | 0.8 1) | 1 1) | 1 | 1.2 | 1.5 | 4 1) | ||
| 1) | Throttle check valve installed at the factory (not version “00”); no nozzle required |
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