Артикул: RX7234
Four-way valve including counter balance on load line Hägglunds V4WCA 1000
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Description
- Valid for: Hägglunds motor CA, CB, CBM
- Maximum flow 1000 l/min
- Maximum pressure 350 bar
Features
- Compact and robust design
- Mounted directly on Hägglunds motors
- Four way directional and flow control of motor
- Proportionally controlled flow of the motor
- Counter balance function on motor pressure line
Product description
General
The valve is designed for use with Hägglunds Compact motors CA, CB and CBM and provides four way directional and flow control of the motor. The flow is controlled proportionally by external pilot pressure applied to ports X1 and X2. The valve includes also a counter balance function on the motor pressure line. The valve is normally mounted on the motor via an adapter. Maximum operating pressure is 350 bar and maximum flow 1000 l/min. The control pilot pressure varies from 4 ... 16 bar. A minimum pilot flow of 5 l/min must be available.
The valve is available in one configuration
V4WCA-1000 including adapter
Notice!
Only one valve is to be used on the Hägglunds CBM.
For more than one valve, contact Bosch Rexroth DC-IA/EHD.
Function
There are four main cartridges, one of which also has a counter balance function. These cartridges control the direction and amount of flow directed to and from the motor. The counter balance cartridge (320) will close against the flow coming from the motor when lowering unless a pilot pressure is present from the motor Cm line thus preventing over running of the motor. The counter balance cartridge starts to lift at a pilot pressure of 20 bar and is fully open at 28 bar, regardless of load pressure. External pressure is applied to X1 to initiate hoisting and X2 to initiate lowering. The amount of flow to drive the motor depends on the pressure applied. P is the supply port and C is the return port.
To hoist, a pilot pressure is applied to X1 which causes cartridge (340) to lift and open allowing flow towards Am in proportional to the pilot pressure. The pilot pressure also switches the pilot valve (311) and vents the spring chamber of cartridge (310) and allows it to open connecting the oil from the motor to C.
When the pilot pressure is applied to X2 at lowering cartridge (330) lifts and opens, allowing flow from P in proportion to the pilot pressure to pass into Cm. Am is connected to cartridge (320) where it is held until pilot pressure from the Cm line acts on the cartridge pilot section and causes the cartridge (320) to lift and open allowing flow into C. If the motor tends to over-run the pilot pressure from Cm decrease and the cartridge (320) will close and restrict the flow into C.
The port XLS senses the pressure in the motor drive line in use. This port allows load sensing control of an associated pump. XLS must be plugged when the valve is not used for load sensing.
LS-signal used:
Connect XLS-port to LS-port of the associated pump. If the pump controller has a very low leakage the M6 plug inside the TL port should be replaced with an orifice size Ø 0.8 or Ø 1.0 to relieve the LS-port when valve is closed.
LS-signal not used:
The XLS port has to be plugged. The M6 plug inside the TL port has to be mounted.
The various drains are collected in the valve and connected to T3 which has to be connected to drain.
Hydraulic circuit V4WCA 1000
Type code
ln order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be stated in full in all correspondence e.g. when ordering spare parts.
| 01 | 02 | 03 | 04 | 05 | 06 |
| V4WC | A | 1000 |
| 01 | 4-way control valve | V4WC |
| 02 | Version | A |
| Maximum flow | ||
| 03 | 1000 l/min | 1000 |
| Modification 1) | ||
| 04 | 00 | |
| Design | ||
| 05 | Standard | 00 |
| Special index 1) | 01 ... 99 | |
| Valve adapter | ||
| 06 | None | XX |
| VA 1000 10 | VA | |
| 1) | To be filled in by Bosch Rexroth DC-IA/EHD |
Technical data
General data
| Mechanical specification | Maximum operating pressure | bar | 350 | |
| Control pilot pressure (X1, X2) | bar | 4 ... 16 | ||
| Maximum pilot pressure | bar | 350 | ||
| Minimum pilot flow | l/min | 5 | ||
| C/Cm line Pressure range to open Counter Balance Valve | bar | 20 ... 28 | ||
| Maximum flow (see section "Pressure loss diagram") | l/min | 1000 | ||
| Hydraulic fluid (see data sheet RE 15414 Hydraulic fluid quick reference) | Fluid temperature range | °C | -25 … +70 | |
| Viscosity range | mm²/s | 20 … 380 | ||
| Recommended operating viscosity | mm²/s | 40 | ||
| Weights | 4-way Flow Control Valve | V4WCA 1000 | kg | 78 |
| Adapter | VA 1000 10 | kg | 24 | |
Pressure loss diagram
Pressure loss - P to C whilst Hoisting (additive to the load pressure) Viscosity 40 mm2/s
Pressure loss - P to C whilst lowering. Counter balance valve piloted open with no load on motor. (Additive to the load pressure) Viscosity 40 mm2/s
Dimensions
V4WCA 1000 00 00 VA
Dimensions in mm
Mounting
Installation
Fitting the V4WCA 1000 Valve on Hägglunds CA and CB
Refer also to the Installation and Maintenance Manual for actual motor.
 |
| Contamination of the system! Risk of damage components.
|
- Remove the protective cover from motor mounting surface.
- Place the O-rings (included in delivery) in their proper position on the adapter mounting surface. Use clean grease to keep O-rings fixed during assembly.
- Mount the adapter onto the motor with the ports in their correct position.
- Remove the protective cover from the adapter mounting surface.
- Place the O-rings (included in delivery) in their proper position on the valve mounting surface. Use clean grease to keep O-rings fixed during assembly.
- Mount the valve against the adapter with the ports in their correct position. Ensure that the Am port on the valve is fitted to the high pressure port on the motor.
- Re-instate paint finish and protect exposed surfaces.
The valve can be mounted on ports A2 and C2, which will reverse the operation of the valve as shown.
Hägglunds CA
| Position | Description |
| 1 | 4 pcs M16 x 140 (included in delivery) |
| 2 | Valve V4WCA 1000 |
| 3 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 4 | Adapter VA 1000 10 (included in delivery) |
| 5 | 4 pcs O-ring 40.87 x 3.53 NBR90 (included in delivery) |
 |  |
| High pressure in P valve / A1 motor (Hoisting), motor shaft rotating counter clockwise viewed from the motor shaft side. Lowering in C valve / C1 motor port | High pressure in P valve / C1 motor (Hoisting), motor shaft rotating clockwise viewed from the motor shaft side. Lowering in C valve / A1 motor port |
| 1) | Hoisting |
Hägglunds CB
| Position | Description |
| 1 | 4 pcs M16 x 140 (included in delivery) |
| 2 | Valve V4WCA 1000 |
| 3 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 4 | Adapter VA 1000 10 (included in delivery) |
| 5 | 4 pcs O-ring 40.87 x 3.53 NBR90 (included in delivery) |
 |  |
| High pressure in P valve / A1 motor (Hoisting), motor shaft rotating counter clockwise viewed from the motor shaft side. Lowering in C valve / C1 motor port | High pressure in P valve / C1 motor (Hoisting), motor shaft rotating clockwise viewed from the motor shaft side. Lowering in C valve / A1 motor port |
| 1) | Hoisting |
Fitting the V4WCA 1000 valve on Hägglunds CBM
Refer also to the Installation and Maintenance Manual for actual motor.
 |
| Contamination of the system! Risk of damage components.
|
- Remove the protective cover from motor mounting surface.
- Place the O-rings (included in delivery) in their proper position on the adapter mounting surface.
- Use clean grease to keep O-rings fixed during assembly.
- Mount the adapter onto the motor with the ports in their correct position.
- Remove the protective cover from the adapter VA 1000 10, mounting surface.
- Place the O-rings (included in delivery) in their proper position on the adapter mounting surface.
- Use clean grease to keep O-rings fixed during assembly.
- Mount the adapter VA 1000 10 onto the adapter VA 1000 15 with the ports in their correct position.
- Remove the protective cover from the adapter mounting surface.
- Place the O-rings (included in delivery) in their proper position on the valve mounting surface.
- Use clean grease to keep O-rings fixed during assembly.
- Mount the valve against the adapter with the ports in their correct position. Ensure that the Am port on the valve is fitted to the high pressure port on the motor.
- Re-instate paint finish and protect exposed surfaces.
Hägglunds CBM
| Position | Description |
| 1 | 4 pcs M16 x 140 (included in delivery) |
| 2 | Valve V4WCA 1000 |
| 3 | 8 pcs 1/2 UNC x 102 (included in delivery) |
| 4 | Adapter VA 1000 10 (included in delivery) |
| 5 | 4 pcs O-ring 40.87 x 3.53 NBR90 (included in delivery) |
| 6 | 8 pcs 3/4-UNC x 178 (included in VA 1000 15) |
| 7 | Adapter VA 1000 15 not included in delivery |
| 8 | 2 pcs O-ring 56.74 x 3.53 NBR 90 (included in VA 1000 15) |
Note!
Mounting the valve on Hägglunds CBM, adapter R939011952, VA 1000 15 must be ordered separately!
 |  |
| High pressure in P valve / A1 motor (Hoisting), motor shaft rotating counter clockwise viewed from the motor shaft side. Lowering in C valve / C1 motor port | High pressure in P valve / C1 motor (Hoisting), motor shaft rotating clockwise viewed from the motor shaft side. Lowering in C valve / A1 motor port |
| 1) | Hoisting |
Installation drawing - V4WCA 1000
Refer to dimensional drawing: 141 0405
Dimensions in mm
| Connection | Description | Connection |
| P, C | Main connection | SAE 1 1/4 1) |
| Am, Cm | ||
| A1, C1 | Side connection | |
| T3 | Drain connection | G1/2 |
| X1, X2 | Pilot Connection | G1/4 |
| XLS | Load sensing connection | |
| TL | Not to be connected | G1/8 |
| 1) | J815C, Code 62, 414 bar |
Information
Required and additional documents
| Title | Document no | Document type |
| Hydraulic fluid quick reference | RE 15414 | Data sheet |
| Hägglunds valve adapters | RE 15383 | |
| V4WCA 1000 | 141 0405 1) | Dimension drawing |
| 1) | Documents only available at LHD extranet. Contact your Bosch Rexroth representative for information. |
Documents at Bosch Rexroth Media Directory
Safety Instructions
Warning signs
In this manual you will find the following signs which indicate a potential hazard, which can or will cause personal injury or substantial property damage. Depending on the probability if the hazard, and how serious the injury or property damage could be, there are three levels if classification.
| Warning sign (warning triangle) | Draws attention to the hazard |
| Signal word | Identifies the degree of hazard |
| Type of risk | Specifies the type or source of the hazard |
| Consequences | Describes the consequences of non-compliance |
| Precautions | Specifies how the hazard can be prevented |
The signal words have the following meaning:
| Warning sign, signal word | Meaning |
 | Indicates a dangerous situation which will cause death or severe personal injuries if not avoided. |
 | Indicates a dangerous situation which may cause death or severe personal injuries if not avoided. |
 | Indicates a dangerous situation which may cause minor or medium personal injuries if not avoided. |
 | Material damage: the product or its environment could be damaged. |
Ordering codes
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