Page 7 - Industrial_EN

APPLICATION PRESS CONSTRUCTION

High working pressures and large oil volume flows are among the main requirements in
press construction. Such machines are expensive and differ not least in their performance
and efficiency. Important factors here are fast pressing cycles, high process reliability and
energy-efficient hydraulic components. The same applies to the die-casting sector, where
nearly identical valve technology is used.

FUNCTION
In hydraulics, high loads (large cylinders) and fast motion
sequences require large oil volume flows of hundreds, if not
several thousand litres per minute. In addition, more and more
hydraulic components today allow higher working pressures,
leading to an increased power density within the control block.
To achieve good energy efficiency, it is therefore extremely im-
portant to avoid large pressure drops within the control block.
This can be accomplished by using 2/2-way slip-in cartridge
valves. They are integrated into a control block as pure logic el-
ements, whereby their function is determined by the pilot valve
used. These slip-in cartridge valves are designed for pressures
up to 630 bar and have a very low pressure drop (delta p).

COMPONENTS
2/2-way slip-in cartridge valves are performance-optimised
logic modules that are available in the nominal sizes from
NG16 to NG50. During development, great importance was
placed on a small delta p in order to achieve an optimum flow
rate, resulting in low losses.

Size C_xx (350 bar) C_ENxx (630 bar)
NG16 180 l/min 270 l/min
NG25 335 l/min 600 l/min
NG32 675 l/min 980 l/min
NG40 1160 l/min 1620 l/min
NG50 n/a 2360 l/min
Volume flow indications at ∆p of 5 bar

SPECIALITIES
• Valves with special seals
• Customer-specific adaptations of the valves
• Combination with pilot valves and electronics
• Solutions for special fluids

WANDFLUH INDUSTRIAL | APPLICATION | PRESS CONSTRUCTION | PAGE 5