Tractor & Trailer Brake Valves0 pages

Tractor and Trailer
Brake Valves
+++ Valves compatibility
Whether you want to fit Hydraulic or Electro-hydraulic Power brake valves on your
tractor/trailer, you can pick and choose any of our products.
The here under matrix should help you select the appropriate product for your needs.
The VB-0B0 and VB-0D0 valves allows:
Steering assist braking (right/left) for field work (U-turn capability)
(with two circuit selectors each associated with one of the pedals)
Service braking when both pedals are mechanically
linked (road mode)
Hydraulic option
It is possible to mix and match hydraulic and electro-hydraulic components.
VB-0B0
Tractor
ELECTRO-HYDRAULIC OPTION
Tractor
Service and
Parking Brake
Service Brake
Service Brake
Parking Brake
Service and
Parking Brake
Service Brake
VB-0B0
 
 
 
 
VB-0D0
 
 
 
 
VB-002
 
 
 
 
 
 
VB-00E*
 
 
 
 
 
 
VB-100
 
 
 
 
 
VB-200
 
 
 
 
 
 
VFR-200**
 
 
 
 
 
VFR-0HX
 
 
 
 
 
 
 
VFR-0EX*
 
 
 
 
 
 
 
or
VB-002 ❘ 2
Trailer
Parking Brake
Trailer
Service Brake
Valve Selection Guide
HYDRAULIC OPTION
or
* Indicates Electro-hydraulic valves
** VFR-200 is equipped with an electro-valve that allows accumulator charging only once the engine has started
4 Trailer Brake Valves
VFR-0HX ❘ 4
The Trailer Brake Valves (TBV) allow piloting
the trailer Brake pressure.
Poclain Hydraulics offers two products:
VFR-0HX is a hydraulic valve piloted by
t a Master cylinder or Power Brake Valve.
VFR-0EX is an electro-hydraulic valve that is piloted
t by the tractor’s ECU.
The TBV also supplies auxiliary equipment and is therefore
equipped with a priority spool in order to supply the trailer brakes
when needed (i.e. Priority is given to the brakes).
Braking ratio : Various settings programmable
t with electro-hydraulic version.
The VB-0D0 valve differences vs VB-0B0:
VB-0D0 is a double circuit steering assist brake valve, acting
on rear and front wheels (VB-0B0 controls the rear wheels)
VB-0D0 always allows independent braking in case of circuit
leakage on one of the axle
VB-0D0 is available in compact cast design
Max. Operating pressure: 210 bar [3000 PSI]
Max. output pressure: 20 to 120 bar [290 to 1740 PSI]
2 Parking and/or emergency brake valves
VFR-0HX
VB-002
Throughput (supply to auxiliaries) : 200 l/min [53 gpm]
The VB-0B0 and VB-0D0 valves combines:
A pressure reducer that supplies an output
t pressure proportional to the pedal stroke
True force feedback with progressive characteristic
Flow to trailer brakes : 50 l/min [13 gpm]
VB-100 ❘ 3
Max output pressure : 20 to 150 bar [290 to 2175 PSI]
VB-0D0
Max Operating pressure : 210 bar [3000 PSI]
1 Service brake valve
The valves combine two functions in one:
Releasing the parking brake
Precise modulation of the braking pressure
t in case of emergency braking (EU regulation)
It is a 3-way graduated release pressure reducing valve available
in a Hydraulic (VB-002) or Electro-hydraulic version (VB-00E).
Mechanical actuators can be selected from our technical
catalogue (VB valves A06604D).
VFR-0EX
VB-00E
Max. Operating pressure : 210 bar [3000 PSI]
Max. output pressure : 10 to 100 bar [145 to 1450 PSI]
3 Accumulator charging valves
The ACV allows maintaining the proper level of pressure
in the braking system by charging the accumulators.
+++ Valves modularity
Electro-hydraulic option
On request, Poclain Hydraulics can design specific Power Brake Valves for your tractor
application.
We will study any request to answer your needs regarding space constraints, functions
integration and/or develop specific performance characteristics.
As an example, Poclain Hydraulics is able to provide modular solutions for easy integration
on the tractor interface.
VB-100
VB-00E ❘ 2
5 Italian Trailer Brake Valve
+
VFR-200
=
VFR-0EX
The units could be flanged on the tractor distribution block, either separately (one or the
other) or as a combined unit.
The perfect module to comply with the Italian legislation:
Parking/emergency brake (0-10 bar [0-145 PSI]).
Free wheel (10-15 bar [145-217 PSI]).
Trailer service brake (15-150 bar [217-2175 PSI]).
VB-200
VFR-0EX ❘ 4
VB-100 is a single circuit hydraulic ACV
t (to drive one Power Brake Valve)
VB-200 is a dual circuit hydraulic ACV
t (to drive two Power Brake Valve)
VFR-200 is an electro-hydraulic ACV
t (that can drive one or two Power Brake Valves)
The ACV also supplies auxiliary equipment and is therefore
equipped with a priority spool in order to feed the accumulators
when needed (i.e. Priority is given to the brakes).
VB0BO ❘ 1
Max. Operating pressure : 210 bar [3000 PSI]
Cut-in/Cut-out pressures : 110/130 bar [1600/1900 PSI],
t 120/140 bar [1740/2030 PSI], 135/160 bar [1950/2320 PSI],
t 160/190 bar [2320/2750 PSI], 170/200 bar [2460/2900 PSI],
t 180/210 bar [2600/3000 PSI]
Flow rate to the auxiliaries : 30, 45, 120 l/min [8, 12, 32 gpm]
Comes as a stand-alone item.
VFR-200
VFR-200 ❘ 3
Flow rate to the accumulators : 2.75, 8, 15 l/min [0.75, 2.1, 4.0 gpm]