PREFILL VALVE SFA25G0-1X/M/01
Manufacturer: Bosch Rexroth
Material #: R901100835
Model : SFA25G0-1X/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 SFA25G0-1X/M/01 (R901100835) is a high-performance industrial hydraulic valve designed for reliable blocking of oil flow at selected ports. This seat valve is pilot-operated and belongs to component series X, featuring spool symbol A B. It is capable of handling a maximum pressure with a specified number of ports for connection. The type of actuation is hydraulic, ensuring precise control and operation.
This model comes in a size suitable for various applications and allows a max flow rate to meet system requirements. It features threaded connections for secure and easy installation, along with a designated number of switching positions. The weight of the valve has been optimized to contribute to the overall efficiency and ease of integration into hydraulic systems.
Equipped with NBR seals, the SFA25G0-1X/M/01 is compatible with a range of hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, and HFC types. This ensures versatility across different operating environments and compliance with industry standards.
The SFA25G0-1X/M/01 can be ordered in two types: Type SFAGTXM without predecompression and Type SFAFTXM with predecompression. Both options cater to different system requirements offering flexibility in application design. This pilot-operated check valve is available for both threaded connection NG and flange connection according to ISO standards from NG size onwards.
Additionally, it offers the possibility for direct attachment to the working cylinder which enhances its application scope. The integrated high-pressure port further extends its capabilities, making it suitable for demanding industrial applications where performance and reliability are critical.
In summary, the Bosch Rexroth SFA25G0-1X/M/01 hydraulic valve presents an efficient solution for controlling oil flow within industrial hydraulic systems while ensuring adaptability through its various configurations and specifications.
$1,472.00 USD
More are expected on February 24, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as February 24, 2025 when ordered in
This product is eligible for factory repair.
Size 25, A → B, hydraulically actuated
Industrial hydraulic valve in a high performance range. Reliable blocking of the oil flow at selected ports.
Unpacked Weight: 4.400 kg
Pilot operated check valve For threaded connection (NG25 and 32) For flange connection according to ISO 6162-1 (from NG40) For direct attachment to the working cylinder With or without pre-decompression, optional Integrated high-pressure port
Type SFA…GT0-1X/M/01 (without pre-decompression)
Type SFA…FT1-X/M/01 (with pre-decompression)
general
|
Nenngröße |
25 | 32 | 40 | 50 | 63 | 80 | |
|
Weight (approx.) |
kg |
4.5 | 6 | 7 | 10.5 | 16 | 23 |
|
Installation position |
any | ||||||
|
Ambient temperature range |
°C |
-30 … +80 | |||||
hydraulic
|
Size |
25 | 32 | 40 | 50 | 63 | 80 | ||
|
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 | ||||||
|
Maximum flow 2) |
Case of application 1 |
l/min |
125 | 200 | 300 | 500 | 800 | 1200 |
|
Case of application 2 |
l/min |
90 | 170 | 250 | 400 | 650 | 1000 | |
|
Case of application 3 |
l/min |
60 | 140 | 220 | 360 | 560 | 900 | |
|
Case of application 4 |
l/min |
40 | 100 | 150 | 240 | 380 | 620 | |
|
Case of application 5 |
l/min |
20 | 70 | 110 | 170 | 280 | 450 | |
|
Druckflüssigkeit |
see table | |||||||
|
Hydraulic fluid temperature range 3) |
°C |
-30 … +80 | ||||||
|
Viscosity range |
mm²/s |
10 … 800 | ||||||
|
Maximum admissible degree of contamination of the hydraulic fluid 4) |
Class 20/18/15 according to ISO 4406 (c) | |||||||
| 1) | Pressure differential at the main poppet for overcoming the spring force |
| 2) | A to B |
| 3) | At the valve working ports |
| 4) | 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 |
|
|
Mineral oils and related hydrocarbons |
HL, HLP, HVLP |
NBR, FKM 3) |
DIN 51524 |
|
|
Bio-degradable |
Insoluble in water |
HETG |
NBR, FKM 3) |
VDMA 24568 |
|
HEES |
FKM 3) |
|||
|
Soluble in water |
HEPG |
FKM 3) |
VDMA 24568 |
|
|
Flame-resistant |
Water-free |
HFDU, HFDR |
FKM 3) |
ISO 12922 |
|
HFC |
NBR |
ISO 12922 |
||
Important information on hydraulic fluids!Flame-resistant and bio-degradable: |
||||
| 3) Upon request |
Flow ‒ case of application 1 (A to B)
Flow ‒ case of application 2 (A to B)
Flow ‒ case of application 3 (A to B)
Size of the filling tank at least 1.5 x cylinder content
Flow ‒ case of application 4 (A to B)
Flow ‒ case of application 5 (A to B)
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.
Attention!
An underdimensioned prefill valve and/or an underdimensioned line leads to gas leaks from the hydraulic fluid with corresponding consequences and often to long-term damage at the cylinder seals.
|
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 ‑ differs depending on the size! |
|
a |
min. 300 mm with extended cylinder |
|
b |
max. 1000 mm with the specified maximum flows |
|
c |
≥ 500 mm |
|
h |
~ 300 mm to max. 500 mm |
For applications outside these parameters, please consult us!
(measured with HLP46, ϑOil = 40 ±5 °C)
Size 25 … 50
Pressure differential Δp between ports A and B dependent on the flow qV in suction direction A to B.
Size 63 and 80
Pressure differential Δp between ports A and B dependent on the flow qV in suction direction A to B.
Type SFA… (from NG25)
Type SFA…T… (from NG32)
Notice!
Possible circuit with directional valve and nozzle in channel P for one individual prefill valve. For the parallel connection of prefill valves, the nozzle is to be individually provided for every control line!
Threaded connection
Dimensions in mm
|
1 |
Name plate |
|
6 |
4 valve mounting bores |
Threaded connection
Dimensions in mm
| 1) | Only version "T" |
|
1 |
Name plate |
|
2 |
Seal ring |
|
3 |
Provide bore Ø6.5 x 6 deep for the valve centering in the connection surface! |
|
4 |
2 grooved dowel pins 6 x 12 |
|
5 |
Plug screw |
|
6 |
4 valve mounting bores |
Flange connection
Dimensions in mm
| 1) | Only version "T" |
|
1 |
Name plate |
|
2 |
Seal ring |
|
3 |
Provide bore Ø6.5 x 6 deep for the valve centering in the connection surface! |
|
4 |
2 grooved dowel pins 6 x 12 |
|
5 |
Plug screw (only version "T") |
|
6 |
4 valve mounting bores |
|
7 |
Flange connection according to ISO 6162-1 |
Dimensions
|
NG |
L1 |
L2 |
L3 |
L4 |
ØD1 |
ØD2 |
ØD3 |
ØD4 |
ØD5 |
D6 |
ØD7 |
D8 |
D9 |
ØD10 |
H1 |
H2 |
H3 |
H4 |
H5 |
H6 |
H7 |
H8 |
H9 |
H10 |
H11 |
H12 |
H13 |
||||||
|
max. |
max. |
||||||||||||||||||||||||||||||||
|
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
||||
| 25 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| 32 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| 40 | 35.7 | 35.7 | 88.4 | ± 0.2 mm | 58 | 62 | 10 | 15.7 | 90 | ± 0.1 | 17.5 | 58 | M16 | 10 | M12 | 38 | 40 | 85 | 69.9 | ± 0.2 | 109 | 102 | 85 | 22 | 116 | 88.4 | ± 0.2 | 10 | 26 | 92 | ± 0.1 | 54 | 18 |
| 50 | 42.9 | 42.9 | 102.5 | ± 0.2 mm | 70 | 72 | 13 | 19 | 104 | ± 0.1 | 22 | 71 | M20 | 13 | M12 | 51 | 50 | 101 | 77.8 | ± 0.2 | 132 | 124 | 101 | 22 | 141 | 102.5 | ± 0.2 | 12 | 32 | 108 | ± 0.1 | 66 | 18 |
| 63 | 50.8 | 50.8 | 113.15 | ± 0.2 mm | 80 | 82 | 13 | 19 | 120 | ± 0.1 | 26 | 90 | M24 | 13 | M12 | 64 | 63 | 125 | 88.9 | ± 0.2 | 152 | 144 | 125 | 30 | 160 | 113.15 | ± 0.2 | 14 | 38 | 130 | ± 0.1 | 83 | 18 |
| 80 | 61.9 | 61.9 | 134 | + 0.3 mm | 92 | 95 | 13 | 19 | 140 | ± 0.1 | 30 | 107 | M27 | 13 | M16 | 76 | 78.5 | 140 | 106.4 | ± 0.2 | 170 | 158 | 140 | 30 | 185 | 134 | + 0.3 | 16 | 43 | 150 | ± 0.1 | 90 | 21 |
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 x |
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 |
|
Example: Type SFA32...G0
pB = 30 bar [435 psi];
pSt = 4.0 x 30 bar [435 psi] = 120 bar [1750 psi]
|
NG |
A1 |
A2 |
A3 |
s1 |
s2 |
F1 |
F2 |
VstX |
Unchecking ratio |
|
|
cm² |
cm² |
cm² |
mm |
mm |
N |
N |
cm³ |
Without pre-decompression 2) |
With pre-decompression |
|
| 25 | 5.31 | - | 1.33 | 6.2 | 5 | 6 … 14 | 38 … 70 | 0.66 | 4 | - |
| 32 | 8.04 | 0.5 1) | 2.01 | 8.5 | 6.5 | 9 … 22 | 58 … 109 | 1.3 | 4 | 0.3 3) |
| 40 | 13.52 | 0.78 1) | 3.14 | 10 | 7 | 14 … 29 | 93 … 162 | 2.2 | 4.3 | 0.3 3) |
| 50 | 21.24 | 1.13 1) | 4.71 | 12.5 | 9 | 23 … 49 | 149 … 261 | 4.2 | 4.5 | 0.3 3) |
| 63 | 32.67 | 1.17 1) | 7.07 | 14.5 | 11 | 35 … 63 | 206 … 348 | 7.8 | 4.6 | 0.3 3) |
| 80 | 49.02 | 2.54 1) | 10.18 | 17 | 13 | 57 … 127 | 310 … 579 | 13.2 | 4.8 | 0.3 3) |
| 1) | Is omitted for version "without pre-decompression" (SFA...0...) |
| 2) | Without pre-decompression |
| 3) | With pre-decompression |
|
Nozzle insert |
Size |
25 | 32 | 40 | 50 | 63 | 80 | |
|
Nozzle Ø in mm |
mm |
0.8 | 1 | |||||
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