Danfoss PVG 128/256 Proportional Valve Group
Service and Parts Manual
Document Revision: July 2017, First edition (Rev 0101)
Website: powersolutions.danfoss.com
Function
Sectional Drawing
PVG 256 with PVEH: A cross-section of the PVG 256 valve group illustrating the PVEH proportional actuator. Key components visible include Electronics, PVBS, PVB, PVM, B-port, and A-port.
PVG 256 with PVEO: A cross-section of the PVG 256 valve group showing the PVEO on/off actuator. Key components visible include Electronics, PVBS, PVB, PVM, PVE, B-port, and A-port.
Installation
Installation and Plug Orientation
PVB 128 Dimensions (L):
| Configuration | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| L (mm) | 98.5 | 164.5 | 230.5 | 296.5 | 362.5 | 428.5 | 494.5 | 560.5 | 626.5 |
| L (in) | 3.88 | 6.48 | 9.07 | 11.67 | 14.27 | 16.87 | 19.47 | 22.07 | 24.67 |
PVB 256 Dimensions (L):
| Configuration | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| L (mm) | 118.5 | 204.5 | 290.5 | 376.5 | 462.5 | 548.5 | 634.5 |
| L (in) | 4.67 | 8.05 | 11.44 | 14.82 | 18.21 | 21.59 | 24.98 |
Diagram showing overall installation dimensions: 345 [14.6]* mm, 120 [4.7]* mm, and 132 [5.2] mm. Mounting holes are specified as 4 x M12 x 18. Torque for PVP/PVGI is Max. 60 Nm [530 lbf-in]. An asterisk (*) indicates "Room for dismantling". A note advises that in particularly exposed applications, protection in the form of screening of the electrical actuator is recommended.
Installation and Identification
Identification:
- C: PVG - number, week and year of installation and series number PVP - pressure setting.
- D: Engraved P/N on PVPV, PVB and PVSI.
Diagram illustrating the PVG valve group with various actuators (PVEH, PVEH-U, PVEH-FLA, PVEO, PVHC, PVH, PVMD) and manual controls (PVM, PVSI, PVPV). Indicates oil flow direction: P → A.
Connections Pump Side and Max Flow Setting
Diagram of the valve group showing ports PP, P, T, LS, A, B. Indicates flow direction P → A. Torque specifications for maximum flow are provided: P→B (18 ±2 N-m [159 ±18 lbf-in]) and P→A (18 ±2 N-m [159 ±18 lbf-in]).
PVB Pressure Settings
Pressure setting LSA, LSB.
Diagram showing pressure setting points LSA and LSB. A diagram of the Relief valve LSA/B is included, indicating a rotary scale of 360° ~ 120 bar [1740 psi].
| Product | Rated Pressure |
|---|---|
| PVG 128 with PVSI | 350 bar [5076 psi] |
| PVG 256 w PVSI | 350 bar [5076 psi] |
Installation of Lever
Diagrams illustrating PVM Standard and PVM with float lever installation angles (30°, 37°). Instruction: "Screw the lever completely in".
Installation of PVE
Diagrams showing PVEO Series 7 and PVEH/H-U/H-FLA Series 7 actuators. Mounting screw details are provided: 4x ∅ 5 [0.2], 8 ±0.5 N-m [70 ±4.4 lbf-in].
⚠️ Warning: For safety reasons, the PVE actuator and interface components must be considered as one unit. Do not try to disassemble under any circumstances.
PVE Connector and Technical Data
Diagrams showing PVE connector variants: 1x4 DEUTSCH, 1x6 DEUTSCH, 1x4 DIN, with pinouts.
| Pin | Pin 1 | Pin 2 | Pin 3 | Pin 4 | Pin 5 | Pin 6 | |
|---|---|---|---|---|---|---|---|
| PVEO | 1x4 DEUTSCH | Udc_A | GND | GND | Udc_B | ||
| PVEH | 1x4 DEUTSCH | Us | Error | GND | Udc | ||
| PVEH-U | 1x4 DIN | Udc | Us | Error | GND | ||
| PVEH-FLA | 1x6 DEUTSCH | Us | Error | Float | GND | Udc |
PVEO control specifications
| Control specification | PVEO | |
|---|---|---|
| Supply Voltage (Udc) | Rated | 12 Vdc |
| Range | 11–15 Vdc | |
| Max. ripple | 5% |
PVEH/H-FLA and PVEH-U control specifications
| Control specification | PVEH/H-FLA | PVEH-U | |
|---|---|---|---|
| Supply Voltage (Udc) | Rated/Range | 11–32 Vdc | 11–32 Vdc |
| Max. ripple | 5% | 5% | |
| Signal Voltage (Us) | Neutral | Us = 0.5 ⋅ Udc | Us = 5 V |
| Q: P→A | Us = (0.5–0.25) ⋅ Udc | Us = 5V–2.5 V | |
| Q: P→B | Us = (0.5–0.75) ⋅ Udc | Us = 5 V–7.5 V | |
| Signal Voltage PWM (Us) | Neutral | Us = 50% DUT | |
| Q: P→A | Us = 50%→25% DUT | ||
| Q: P→B | Us = 50%→75% DUT | ||
| PWM Frequency (Us) | Recommended | >1000 Hz | |
| Input Impedance | Rated | 12 kΩ | |
| Input Capacitance | Rated | 100 nF |
PVE operating conditions
| PVEO, PVEH/H-U/H-FLA Operating Conditions | ||
|---|---|---|
| Pilot Pressure | Nominal | 13.5 bar [196 psi] |
| Minimum | 10.0 bar [145 psi] | |
| Maximum | 15.0 bar [220 psi] | |
| Storage Temperature | Ambient | -50°C → 90°C [-58°F→194°F] |
PVE LED characteristics
PVEO LED characteristics
| Color | LED view | Function |
|---|---|---|
| Green | Solid green bar | Power ON |
PVEH/H-FLA LED characteristics
| Color | LED view | Function |
|---|---|---|
| Green | Solid green bar | Operating |
| Green @ 1.5 Hz | Pulsing green bars | Neutral - Power Save |
| Red | Solid red bar | Internal fault |
| Red @ 1.5 Hz | Pulsing red bars | External or Float fault |
PVEH-U LED characteristics
| Color | LED view | Function |
|---|---|---|
| Green | Solid green bar | Operating |
| Green @ 1.5 Hz | Pulsing green bars | Neutral - Power Save |
| Red | Solid red bar | Internal fault |
| Red @ 1.5 Hz | Pulsing red bars | External or Float fault |
| Yellow | Solid yellow bar | Disable mode |
Installation of PVHC
Diagram showing PVHC with DEUTSCH Version and AMP Version connectors, with pin labels (A) Udc, (B) Udc. Screw torque: 5 [0.2], 8 ±0.5 N-m [70 ±4.4 lbf-in]. A note emphasizes the importance of seals for connector sealing.
| DEUTSCH Version | AMP Version | |
|---|---|---|
| (B) Udc | (B) Udc | |
| (A) Udc | (A) Udc |
Technical data
| 12 V | 24 V | 1 – 1500 mA | 0 – 750 mA | |
|---|---|---|---|---|
| Controller output current range | ||||
| Coil resistance | 12 V | 24 V | 4.72 Ω ± 5% | 20.8 Ω ± 5% |
| Pilot pressure (over tank)* | Nominal | 25 bar [363 psi] | ||
| Minimum | 21 bar [305 psi] | |||
| Maximum | 25 bar [363 psi] | |||
| Control pressure | Range | 5 – 15 bar [72.5 – 217.5 psi] | ||
| Max. tank pressure | Port T Static | 25 bar [363 psi] | ||
| Port T Dynamic | 30 bar [435 psi] | |||
| Temperature range | Ambient | -30°C → 80°C [-22°F → 176°F] | ||
| Oil viscosity | Medium | -20°C → 80°C [-4°F → 176°F] | ||
| Operating range | 12–75 mm²/s [65 → 347 SUS] | |||
| Minimum | 4 mm²/s [39 SUS] | |||
| Maximum | 400 mm²/s [2130 SUS] | |||
| Enclosure - Protection class | DEUTSCH DT | IP 67 |
Technical data (continued):
- Filtering in the hydraulic system; Max. permissible degree of contamination: 23/19/16 (ISO 4406, 1999 version)
- Designed to be used with hydraulic activated spools
Standard Main Spool Assembly PVE and PVH/PVHC
Diagrams illustrating "Spool for PVE" and "Spool for PVH/PVHC". Tightening torque specified as 16±2Nm [141±18lbf-in]. Note: "Same tightening torque for PVE and PVH/PVHC spools".
PVG 128/256 Service Parts
PVPV, Closed Center Pump Side Module
Exploded view diagram of the PVPV module with parts numbered 1, 2, 3, 4. Torque specifications are indicated: 5±1Nm [44±9lbf-in], 35±5Nm [310±44lbf-in], 35±3Nm [310±27lbf-in], 30±3Nm [265±27lbf-in].
| Type | Description | Code number | Metric flange | G1-1/2" BSP | SAE flange | Thread ports 1-7/8 UNF | Letter |
|---|---|---|---|---|---|---|---|
| PVPV | Closed center with pilot supply for electrical actuation, pilot gage port, and facility for pilot shut off | 11173130 | 11176703 | 11176691 | 11176702 | A | |
| Closed center with pilot supply for hydraulic actuation, pilot gage port, and facility for pilot shut off | 11178095 | 11178098 | 11178117 | 11178119 | B |
| Item | Description | Code numbers | Letter | ||
|---|---|---|---|---|---|
| 1 | Pilot pressure reducing valve | - | |||
| 2 | PVPP 12V | 11160318 | |||
| 2 | PVPP 24V | 11160319 | |||
| 3 | Plug if no PVPP is mounted | See PVLP/PVLA | |||
| 4 | Shock and anti-cavitation Valve | 2 | 2 | ||
PVB 128, Basic Module
Exploded view diagram of the PVB 128 basic module with parts numbered 1, 2, 3, 4. Torque specifications are indicated: 35±3Nm [310±27lbf-in], 20±3Nm [177±27lbf-in].
⚠️ Warning: Risk of leak. The module will leak if the flange mount screws are not properly secured. Flange mount screws according to ISO 6162-2.
| Type | Description | Code number | Metric flange | G1-1/2" BSP | SAE flange | Thread ports 1-7/8 UNF | Letter |
|---|---|---|---|---|---|---|---|
| PVB 128 | Compensated basic module | 11170522 | 11170528 | 11170524 | 11170526 | A | |
| Compensated basic module with LSA/B relief valve for each work port | 11176915 | 11176918 | 11176916 | 11176917 | B | ||
| Compensated basic module with LSA/B relief valve for each work port and 2xPVLPs for each work port | 11165621 | 11170527 | 11170523 | 11170525 | C |
| Item | Description | Code number | Letter | ||||
|---|---|---|---|---|---|---|---|
| 1 and 2 | Shock and anti-cavitation Valve | See PVLP/PVLA | |||||
| 3 | LS relief valve | 155L6495 | 4 | 2 | 2 | ||
| 4 | LS relief valve service tool | 155L6494 | |||||
PVB 256, Basic Module
Exploded view diagram of the PVB 256 basic module with parts numbered 1, 2, 3, 4. Torque specifications are indicated: 35±3Nm [310±27lbf-in], 20±3Nm [177±27lbf-in].
| Type | Description | Code number | Metric flange | G1-1/2" BSP | SAE flange | Thread ports 1-7/8 UNF | Letter |
|---|---|---|---|---|---|---|---|
| PVB 256 | Compensated basic module | 11169244 | 11169252 | 11169248 | 11177020 | A | |
| Compensated basic module with LSA/B relief valve for each work port | 1117015 | 11177017 | 11177016 | 11177019 | B | ||
| Compensated basic module with LSA/B relief valve for each work port and 3xPVLPs for each work port | 11169243 | 11169251 | 11169247 | 11177018 | C | ||
| Turbo compensator feature basic module with LS A/B relief valve for each work port and 3xPVLPs for each work port | 11183379 | 11183406 | 11183404 | 11183402 | D |
| Item | Description | Code number | Letter | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 and 2 | Shock and anti-cavitation Valve | See PVLP/PVLA | |||||||
| 3 | LS relief valve | 155L6495 | 2 | 2 | 2 | ||||
| 4 | LS relief valve service tool | 155L6494 | |||||||
PVLP Shock and PVLA, Suction Valves
Diagrams showing parts 1 and 2 with torque specifications: 35±3 Nm [310±27 lbf-in], 13 [0.50].
| Type | Part number | PVLP/PVLA |
|---|---|---|
| PVLA | 157B2001 | |
| PVLP | 157B2032 | |
| 157B2050 | ||
| 157B2063 | ||
| 157B2080 | ||
| 157B2100 | ||
| 157B2125 | ||
| 157B2140 | ||
| 157B2150 | ||
| 157B2160 | ||
| 157B2175 | ||
| 157B2190 | ||
| 157B2210 | ||
| 157B2230 | ||
| 157B2240 | ||
| 157B2250 | ||
| 157B2265 | ||
| 157B2280 | ||
| 157B2300 | ||
| 157B2320 | ||
| 157B2350 | ||
| 157B2380 | ||
| Plug | 157B2002 |
Diagram of a PVLP/PVLA component showing "Date stamp" and "Pressure setting in bar". Part number: 157B2230.
PVBS Main Spool
Diagrams illustrating "Spool for PVE" and "Spool for PVH/PVHC". Tightening torque specified as 16±2Nm [141±18lbf-in]. Note: "Do not use hole in tension bar for tightening spool assembly. Use a 17 mm wrench instead. For spool part numbers, see PVG 128/256 Technical Information, pages 42-57."
PVM Mechanical Activation
Exploded view diagram of the PVM mechanical activation unit with parts numbered 1, 2. Torque specifications are indicated: 10±2 Nm [7±1.5 lbf-in], 4x 8±1 Nm [71±9 lbf-in]. Max flow values are shown: P-B (18±2 Nm [53±18 lbf-in]) and P-A (18±2 Nm [159±18 lbf-in]).
| Type | Description | Code number |
|---|---|---|
| PVM 256 | Non-adjustable with Base and Lever | 11176644 |
| Adjustable with Base and Lever and BSP Gauge Plug | 11175317 | |
| Adjustable with Base and Lever and BSP Gauge Plug | 11176635 |
| Item | Description | O-ring bag | 10 pcs in bag |
|---|---|---|---|
| 2 | O-ring (one pcs per PVM) | TBA | 1 |
PVMD
Exploded view diagram of the PVMD unit with parts numbered 1 through 7. Torque specifications are indicated: 8±0.5 Nm [70±4.5 lbf-in], 5[0.20].
| Type | Description | Code number |
|---|---|---|
| PVMD assembly | Cover manual actuation only | 11187779 |
| Item | Description | Code number |
|---|---|---|
| 1 | Assembly | 1 |
| 2 | Screwkit | 1 |
| 3 | PVMD cover, including 2 and 4 | 157B0001 |
| 4 | Seal kit | 157B3999 |
| 5 | Screwkit | 1 |
| 6 | Interface block - inverted | 1 |
| 7 | Seal kit for 10 pcs | 11191632 |
PVH
Exploded view diagram of the PVH unit with parts numbered 1 through 7. Torque specifications are indicated: 8±0.5 Nm [70±4.5 lbf-in], 5[0.20].
| Type | Description | Code number |
|---|---|---|
| PVH assembly | G1/4" BSP | 11187777 |
| PVH assembly | 9/16"-18 UNF | 11187776 |
| Item | Description | Code number |
|---|---|---|
| 1 | Assembly | 1 |
| 2 | Screwkit | 1 |
| 3 | PVH cover, including 2 and 4 | 157B0008 |
| 4 | Seal kit | 157B3999 |
| 5 | Screwkit | 1 |
| 6 | Interface block - inverted | 1 |
| 7 | Seal kit | 11191632 |
PVHC, High Current Actuation
Exploded view diagrams for "PVHC with AMP connector" and "PVHC with DEUTSCH connector", with parts numbered 1 through 7. Torque specifications are indicated: 8±0.5 Nm [70±4.5 lbf-in], 5[0.20].
| Type | Description | Code number |
|---|---|---|
| PVHC | 12V AMP | 11187757 |
| 12V DEUTSCH | 11187772 | |
| 24V AMP | 11187774 | |
| 24V DEUTSCH | 11187775 |
| Item | Description | Code number |
|---|---|---|
| 1 | Assembly | 1 |
| 2 | Screwkit | 155L4199 |
| 3 | Actuator assembly | 1 |
| 4 | Seal kit | 11061235 |
| 5 | Screwkit | 1 |
| 6 | Interface block - inverted | 1 |
| 7 | Seal kit | 11191632 |
PVEO, On/Off Actuator
Exploded view diagrams for PVEO actuator with DEUTSCH and AMP connectors (implied by pinouts on page 10), with parts numbered 1 through 7. Torque specifications are indicated: 8±0.5 Nm [70±4.5 lbf-in], 5[0.20].
| Type | Description | Code number |
|---|---|---|
| PVEO | 1x4 DEU (12 Vdc) | 11186328 |
| 1x4 DEU (24 Vdc) | 11186330 | |
| 1x4 DIN (12 Vdc) | 11186331 | |
| 1x4 DIN (24 Vdc) | 11186342 |
| Item | Description | Code number |
|---|---|---|
| 1 | Assembly | 1 |
| 2 | Screwkit | 155L4199 |
| 3 | Actuator assembly | 1 |
| 4 | Seal kit | 157B4997 |
| 5 | Screwkit | 1 |
| 6 | Interface block | 1 |
| 7 | Seal kit | 11191632 |
PVEH, Proportional Actuator
Exploded view diagrams for PVEH actuator assembly, with parts numbered 1 through 7. Torque specifications are indicated: 8±0.5 Nm [70±4.5 lbf-in], 5[0.20].
PVEH, PVEH-U, PVEH-FLA
| Type | Description | Code number |
|---|---|---|
| PVEH | 1x4 DEU | 11186325 |
| 1x4 DEU | 11186326 | |
| 1x4 DIN | 11186321 | |
| 1x4 DIN | 11186322 | |
| 1x4 DIN | 11186323 | |
| 1x4 DIN | 11186324 | |
| 1x6 DEU | 11186327 |
| Item | Description | Code number |
|---|---|---|
| 1 | Assembly | 1 |
| 2 | Screwkit | 155L4199 |
| 3 | Actuator assembly | 1 |
| 4 | Seal kit | 157B4997 |
| 5 | Screwkit | 1 |
| 6 | Interface block | 1 |
| 7 | Seal kit with 10 pcs | 11191632 |
PVSI, PVGI, and PVSI with P and T connection
Diagrams showing PVSI endplate, PVGI interface plate, and PVSI with P and T port.
| Type | Description | Code number |
|---|---|---|
| PVGI | Interface plate | 11171422 |
| Interface plate with T0 | 11171423 | |
| PVSI | Endplate | 11171419 |
| Endplate with LX BSP | 11179950 | |
| Endplate with LX UNF | 11179949 | |
| Metric Flange 1" | 11171418 | |
| Thread Ports G1" BSP | 11179952 | |
| SAE Flange 1" UNC screws | 11171421 | |
| Thread Ports 1-5/16 UNF | 11171416 |
PVAS Only PVG 128/256 – 2 and 3 bolt kit
Diagram showing components of the PVAS kit. Torque specifications are indicated: 28±2 Nm [248±18 lbf-in], 2x13[0.50].
| Item | Description | Code number |
|---|---|---|
| 1 | Set of seals for 7 work sections: PVB 32 | 11156335 |
| 2 | Seat of seals for 5 work sections: PVB 128/256 | 11180333 |
For PVAS part numbers, see PVG 128/256 Technical Information, pages 91-94.
Company Information
Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and electronic components. They specialize in providing state-of-the-art technology and solutions that excel in the harsh operating conditions of the mobile off-highway market. Building on their extensive applications expertise, they work closely with customers to ensure exceptional performance for a broad range of off-highway vehicles.
Danfoss helps OEMs around the world speed up system development, reduce costs, and bring vehicles to market faster. Danfoss is positioned as "Your Strongest Partner in Mobile Hydraulics."
Further product information is available at www.powersolutions.danfoss.com.
Danfoss offers expert worldwide support for customers, ensuring optimal solutions for outstanding performance. An extensive network of Global Service Partners provides comprehensive global service for all components.
Contact your local Danfoss Power Solution representative for assistance.
Products Offered:
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Danfoss Power Solutions Locations:
- Danfoss Power Solutions (US) Company
2800 East 13th Street
Ames, IA 50010, USA
Phone: +1 515 239 6000 - Danfoss Power Solutions GmbH & Co. OHG
Krokamp 35
D-24539 Neumünster, Germany
Phone: +49 4321 871 0 - Danfoss Power Solutions ApS
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DK-6430 Nordborg, Denmark
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Phone: +86 21 3418 5200
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