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Series
C2.9546

Sequence Valves ND 5

with adjustable switching time
max. operating pressure 250 bar
Sequence Valves ND 5
Downloads
Catalogue sheet
Operating instructions
Information Series
Description
C 2.9546 Sequence valves 

This sequence valve is used in hydraulic fixtures to operate individual clamping cylinders or entire subassemblies with an adjustable time delay.

Normal sequence valves open without delay, if the adjusted switching pressure is exceeded. Sometimes it is necessary to slow down the switching sequence for functional reasons. For this reason, this sequence valve does not open pressure-dependently, but by the adjustable stroke of a control piston.

A poppet valve is built into the housing, which can be opened by the hydraulically-operated control piston. When pressure is applied to port P, hydraulic oil flows through an orifice check valve to the control piston. Since the piston stroke is relatively long, it takes a few seconds for the control piston to open the poppet valve. The delay time depends on the piston stroke, which is limited by the adjusting screw.

Sequence valve C 2.9546 with adjustable switching time
Sequence valve C 2.9546 with adjustable switching time
Products (2)
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type
sequence valve (2)
type
manifold-mounting type (2)
max. operating pressure [bar]
250 (2)
type
poppet valve (2)
max. flow rate [l/min]
8 (2)
port size
ND 5 (2)
control
as a function of the time (2)
Einstellbereich
Item no. CAD datatypetypemax. operating pressure [bar]type
Item no.
CAD data
type
sequence valve
type
manifold-mounting type
max. operating pressure [bar]
250
type
poppet valve
Properties
Item no.
CAD data
type
sequence valve
type
manifold-mounting type
max. operating pressure [bar]
250
type
poppet valve
Properties
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Item no.
type
sequence valve
type
manifold-mounting type
max. operating pressure [bar]
250
type
poppet valve
max. flow rate [l/min]
8
port size
ND 5
control
as a function of the time
Einstellbereich
0,9 – 45 s
Item no.
type
sequence valve
type
manifold-mounting type
max. operating pressure [bar]
250
type
poppet valve
max. flow rate [l/min]
8
port size
ND 5
control
as a function of the time
Einstellbereich
0,5 – 18 s
Accessories (6)
Item no. CAD data Description
Item no.
CAD data
Description
O-ring 7 x 1.5 mm, NBR as per data sheet B1.5091
Item no.
CAD data
/
Description
Socket head cap screw M5 x 50 mm - DIN 912-8.8 as per data sheet B1.486
Item no.
CAD data
Description
Mounting plate G1/4 for sequence valves 2954620 and 2954630 max. 250 bar, as per data sheet C2.9546
Item no.
CAD data
/
Description
Orifice check valve for sequence valve 2954630 as per data sheet C2.9546
Item no.
CAD data
/
Description
Orifice check valve for sequence valve 2954620 as per data sheet C2.9546
Item no.
CAD data
/
Description
Plug-in filter for sequence valves 2954620 and 2954630 as per data sheet C2.9546
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Application examples
Sequence valves C 2.9546 for time-dependent sequence control

Clamping sequence

  • Cylinder 1 moves without pressure against the stop.
  • Oil pressure increases up to 160 bar.
  • After the adjusted switching time the sequence valve opens and cylinder 2 moves almost without pressure against the stop. In the process cylinder 1 becomes again nearly pressureless.
  • The oil pressure at both cylinders increases up to 160 bar.
sequence valve C2.9546 for time-dependent sequence control
sequence valve C2.9546 for time-dependent sequence control