力士乐M4-15操作阀

1/32

Replaces: RE 64283-XC-B2 Load-sensing control block

in sandwich-plate design

Model M4-15–XC and M4-15-XH

Nominal size 15

Series 2X

Nominal pressure 350 bar (pump side)

Nominal pressure 420 bar (consumer side)

Maximum flow rate

– pump side: 300 l/min at central input element

200 l/min at side input element

– consumer side: 200 l/min with pressure balance and load retaining function

160 l/min with pressure balance and load retaining function

RE 64283-X-B2/04.09

HAD 7414

ATEX-devices

For potentially explosive atmospheres

Operating Instructions

Part II Technical Datasheet

What you need to know about these Operating Instructions

These Operating Instructions apply to Rexroth explosion-proof valves and consist of the

following three parts:

Part I General Information RE 07010-X-B1

Part II Technical Datasheet RE 64283-X-B2 Mat.-No. R901219663

Part III Product-specific Instructions RE 64283-X-B3

For further information on the correct use of Rexroth hydraulic products please refer to our

publication entitled General product information on hydraulic products, RE 07008.

Information about explosion protection:

Area of application according to Explosion Protection Directive

94/9/EC:

I I2G: Ignition protection type Ex ia IIB T4 according to

–

EN 60079-0: 2004 and EN 50020: 2002

II2D: Protection type IP67, T110 °C according to

–

EN 50281-1-1: 1998

IM2: Ignition protection type Ex ia I according to

–

EN 60079-0: 2006 and EN 60079-11: 2007

Ambient temperature range -20 °C ≤

–T a ≤ +80 °C

Content Page

Characteristics 3Function, section 4Symbol

4

Technical data

5 to 7Modular construction 8, 9Ordering details

10 to 12Ordering examples 13, 14Input elements

15 to 17

Directional control valve elements

18Pressure balance 18LS pressure limitation

19Main piston 20Flow rate

21Actuation types, cover A 22Actuation types, cover B 23Secondary valves 24

End elements 25 to 28

Unit dimensions

29 to 31

Summary of the contents

System

Load-pressure independent flow rate control

–Open Center for fixed displacement pump

• Closed Center for variable displacement pump

• Construction

Sandwich-plate design

–Input element

• up to 9 directional control valve elements, of which • max. 6 with servo control

up to 18 directional control valve elements with central-• input element, of which max. 6 with servo control End element

• Actuation types

–mechanical (hand lever)• hydraulic

• servo-hydraulic

• Characteristics

Flow rate

load pressure compensated –high repeating accuracy –low hysteresis –Pressure limitation

Input element

–pilot-operated pressure valves with large nominal width • Directional control valve element / consumer ports –compact pressure-control valves with supply function • LS pressure limitation

–selectable pressure setting per consumer port on request • (design by technical sales)