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Constant Flow Rate With
Meter-in Or Meter-out Controls

 

Reliable operation over the whole pressure
and flow range

 

To complement an already wide selection of flow-control valves, Bucher Hydraulics is extending its product range with two sizes of 2-way flow-control cartridges. These high performance, load compensated screw-in cartridges are available with G ¼" (size 1) and M42x2 (size 16) mounting threads. By means of a fixed orifice, the flow rate to an actuator is kept constant regardless of load changes. The load compensation is done by the pressure-compensator piston, which maintains the pressure drop across the fixed orifice at a constant level. The flow-control cartridges can be supplied with various fixed orifices for optimum integration in the system. In addition, by using the adjustable pressure-compensator spring on the size 16 cartridge, the required flow rate (the control range depends on the fixed orifice) can be adjusted directly at the system.

 
 

Symbols

 

With fixed orifice, fixed compensator spring

 

MRPA-2-1…

 
 

With fixed orifice, adjustable compensator spring

 

MRPB-2-16…

 
 

Technical Data

 
 

Series

Max. oper. pressure pmax

Max. flow rate Qmax

Nom. flow rate QN

Flow direction

Cavity type

Mounting method

Data sheet no.

MRPA-2-1… - NG1

250 bar

5 l/min

0,3 / 1 / 2,5 / 4 / 5 l/min
others on request

Only 2 -> 1

GB

G 1/4"

400-P-408101

 

Series

Max. oper. pressure pmax

Max. flow rate Qmax

Nom. flow rate QN

Flow direction

Cavity type

Mounting method

Data sheet no.

MRPB-2-16… - NG16

350 bar

200 l/min

70 / 110 / 140 / 200 l/min
others on request

Only 1 -> 2

EF

M42 x 2

400-P-411101

 

Potential applications

 

2-way flow-control cartridges are used in mobile and industrial applications to maintain constant flow rates in meter-in or meter-out flow-control systems under conditions of varying pressure.

 
 

Important features

  • Load-independent flow rate

  • Various fixed orifices

  • Reliable operation over the whole pressure and flow range,
    even with high pressure differentials

  • High stability in systems that are liable to oscillate

  • Excellent reproducibility

  • Minimal wear and long service life

 
 

Your benefits

  • Outstanding control of the load
  • Ideal integration in the system
  • Responsive and controlled movements
  • Simple system integration thanks to high functional stability
  • Long service life without costly maintenance