Heintzmann Corporation
    Angle Valves or Working Valves

              Rapid Relief Valves are safety valves, to limit the hydraulic internal
pressure of props and cylinders of powdered supports.  The are suitable for
all types of powered support. 

• Valve Design: Suitable for all types of props, cylinders and control units

• Characteristics:  Robust, light weight, compact.

• Flowrate Q_D:  Max. 120 l/min to 3000 l/min

• Working Pressure p_B:  Max. 600 bar.

• Functions-Pressure Difference p_F:  Small, 4 to 8% of the setting-pressure p_E.

• Control System and Adjustment:  Spring and Adjusting screw

• Fitting:  Plug of thread.

• Method of depressurisng:  Drain off into the atmosphere or by return line into
  the closed system.

• Construction:  Piston-O-Ring-system.

• Material:  Stainless.

Reset Valve:

       The pressure sequence valve is used as a "reset valve" for hydraulic control at
the powered support.  By using this valve it is garanteed that the props are
always set with the operating pressure of the face support hig-pressure pump.

• Nominal-pressure p_N: On pumpside: max. 350 bar, on propside: max. 500 bar,
  switch on pressure: infinitely variable 70 - 150 bar

• Fitting:  3 x plug DN 10

• Valve characteristic: active resetting

• Construction: Robust, light weight, compact.

• Material:  Stainless.

For further information about the products shown or on our entire product range, please
call one of our representatives or e-mail us at heico@netscope.net.