Sequence valves ND 4

with check valve
max. operating pressure 500 bar

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Catalogue sheet

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Operating instructions

Information Series

Description

C 2.954 Sequence Valve ND 4

Sequence valves are used in power workholding circuits for pressure dependent sequence control. The compact size allows mounting directly to the clamping fixture, requiring only one pressure line from the power unit to the fixture for single-acting cylinders.

Products (6)

Number

Item no.	CAD data	type	type	max. operating pressure [bar]	type
Item no. 2954410	CAD data	type sequence valve	type pipe-thread type	max. operating pressure [bar] 500	type spool valve	Properties
Item no. 2954419	CAD data	type sequence valve	type manifold-mounting type	max. operating pressure [bar] 500	type spool valve	Properties
Item no. 2954420	CAD data	type sequence valve	type pipe-thread type	max. operating pressure [bar] 500	type spool valve	Properties
Item no. 2954429	CAD data	type sequence valve	type manifold-mounting type	max. operating pressure [bar] 500	type spool valve	Properties
Item no. 2954440	CAD data	type sequence valve	type pipe-thread type	max. operating pressure [bar] 500	type spool valve	Properties
Item no. 2954449	CAD data	type sequence valve	type manifold-mounting type	max. operating pressure [bar] 250	type spool valve	Properties

Accessories (1)

Number

Item no.	CAD data	Description
Item no. 3000342	CAD data	Description O-ring 7 x 1.5 mm, NBR as per data sheet B1.5091

Application example

Application example 1

The workpiece is to be positioned and clamped in the fixture with hydraulic clamping cylinders.

Clamping sequence

Cylinder 1 pushes workpiece against stop a.
Pressure rises to 30 bar, sequence valve opens.
Cylinder 2 and 3 extend and push the workpiece against stop b and c.
Oil pressure rises uniformly in all cylinders, because of the throttle-free passage of the opened sequence valve.

Application example 2

Sequence control for 5 single-acting clamping cylinders.