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Folie 1
we engineer your progress
Valvesforhydraulicdrivenattachments
Safe and reliable operating of hydraulic attachments!
WESSEL-HYDRAULIK GmbH

Folie 2
Activating valve 1:
Changes operation of a standard
consumer to the attachment!
Attachment can be operated by the
machine foot pedal/joystick or elec
tric switch!
Assembly of an additional function behind the main valve: 6/2, 6/3 directional valve
Version 2: In neutral p
osition connected with
standard consumer
Version 1: In neutral
position both consumers
are disconnected
VDC
M
P
LS P
T18
17
16
13
14 15
12
11
Pvst
5
2
10
1
3
4
5 3 6 4
1 2 L
N2
N3
N4
N1
1
2
3
4 5

Folie 3
Up to 400 lpm and 420 bar!
Assembly of an additional function behind the main valve: 6/2, 6/3 directional valve
Related catalogue pages: 100 l/min: 233.222.500.9
250 l/min: 235.232.552.9
400 l/min: 237.244.503.9
Type D62-2D
Electric piloted
50 lpm
Type D6X-2S
Electric or hydraulic
piloted
100 lpm
Type 6X-2M
piloted
250 lpm
Type D6X-2L
piloted
400 lpm

Folie 4
Priority or Hammer valve installation
Closed-Center/LS : in Bypass to valve block
Case, Komatsu, ...
1: Flow Control valve type FC1
2: electr. switch or Wessel Tool Control
4: Dump valve type D22
5: shuttle valve
11
16
15
13
14
17
18 P
LS P
T
3
2
1
5
12
4

Folie 5
Open-Center/NFC : between Pump and valve block
Doosan, Hitachi, JCB, Kobelco, ...
1: Flow Control valve type FC1
2: electr. switch or Wessel Tool Control
4: Dump valve type D22
5: shuttle valve
11
16
15
13
14
17
P
P
T
3
2
1
12
4

Folie 6
Flow 55 – 550l/min (150 gallons), pmax 420 bar (6000 psi), for all hydraulic systems
Related catalogue pages: 5
5 l/min: 234.332.212.9 (LS)
55 l/min: 234.332.214.9 (NFC)
100 l/min: 235.322.510.9 (LS)
100 l/min: 235.322.210.9 (NFC)
200 l/min: 236.364.703.9 (LS)
200 l/min: 235.322.705.9 (NFC)
300 l/min: 237.364.621.9 (LS)
300 l/min: 237.364.626.9 (NFC)
550 l/min: 238.364.611.9 (LS)
550 l/min: 238.364.612.9 (NFC)
Type FC1- 1N: 55- 200 lpm
Type FC1-2N: 300-550 lpm

Folie 7
Flexibel installation of hydraulic attachments
Proportional Flow regulating valve:
For changing consumers with different need for flow and pressure.
Flow und pressure setting electrically operated, e.g.
by Wessel Tool Control
For LS- and NFC Systems
P
T
L
A B
VStMH H St MVSt
MH
MVSt
VSt
Related catalogue pages: 237.364.622.9 (LS)
237.364.623.9 (NFC)
Type FC1-1P: 300 lpm

Folie 8
Different generator flows available
Generator installation
1 Generator pump (plus 10% flow to generator need)
2 Generator control valve
3 und 4 generator with motor
5 Anticavitation valve
6 preload valve (20 bis 40 bar)
Related catalogue pages:
50 l/min: 235.332.522.9
60 l/min: 235.332.546.9
70 l/min: 235.332.547.9
80 l/min: 235.332.523.9
Type FC1-1G: 50-100 lpm

Folie 9
Shear installation
Shear control valves for
250 l/min and 450 l/min, 420 bar
1,3: Shear control valve type D53
2: electr. switch or Tool Control 7:
Flow adjustment (option)
4: foot pedal
5: dump valve
BMB A MA
MSt T St P MP
MVSt1
MVSt2
D2
D1
250 l/min: 157.924.603.9 (hydr.)
250 l/min: 257.344.608.9 (elec.)
450 l/min: 158.924.603.9 (hydr.)
450 l/min: 258.344.618.9 (elec.)
LS-Pack available!
11
16
15
13
14
17
P
P
T
2
12
8
5
1
Pvst
3
4 7
Electrically or hydraulically piloted
LS- and NFC System
Open Center-System

Folie 10
Operating of rotary motors of shears or grippers
Flow control valves for operating rotary motors
•Flow independ of machine pressure
•Electrically or hydraulically piloted
•Switching or proportional
•Consumer Flow up to 100 l/min
•With pressure relief and suction valves
•For all common excavator systems available
Maximum pressure 400 bar!
11
16
15
13
14
17
P T
2
1
12
Pvst
3
4
LS P
6
Closed Center (LS-System)
5

Folie 11
Operating of rotary motors of shears or grippers
NFC Version
LS Version
AB T
LS1
LS2
mainvalve
shuttlevalve
signal2
Related catalogue pages:signal 1
Valves for LS Systems:
60 l/min: 136.904.002.9 (hydr.)
40 l/min: 196.911.001.9 (hydr.-prop)
60 l/min: 236.311.004.9 (elec.)
45 l/min: 296.311.001.9 (elec.-prop)
electr.prop.
hydraulic
P
mainvalve
P
mainvalve
standard
proportional
VSt
200 bar
LS1
LS2
main control valve
MA
1.20.8
pump
attachment
A1
0.5
AB TP
pump flow / operating flow
300/60 l/min: 136.904.003.9 (hydr.) 300/
40 l/min: 196.911.002.9 (hydr.-prop) 300/
60 l/min: 236.314.008.9 (elec.) 300/45 l/
min: 296.311.003.9 (elec.-prop) 400/60 l/
min: 137.904.001.9 (hydr.) 400/40 l/min:
197.914.002.9 (hydr.-prop) 400/60 l/min:
297.314.001.9 (elec.) 400/45 l/min: 237.
314.011.9 (elec.-prop)
Type FC2-2N
Type FC2-1N

Folie 12
11
16
15
13
14
17
P T
2
1
12
Pvst
4
LS P
Installation of mutiple functions (type MCV)
Simultaneous load-independent function using the example of a gripper retrofit
• Actuated hydraulic or electrically proportionally,
• One or multiple consumer,
• 100 or 240 lpm for each consumer,
• LS- and NFC-Systems,
• 420 bar!
Closed Center (LS-System)
5
7
6

Folie 13
Installation of mutiple functions (type MCV)
Modular system for customized solutions
Type MCV-1NB16 Type MCV-1NB22
NFC-System Electri
cally operated
Pressure relief and suction valves
LS-System Electric
ally operated
Sectional pressure compensator
Pressure relief and suction valves

Folie 14
11
16
1514
13
17
P T
2
1
12
LS P
3
3
4
Back pressure reduction by dump valves: More power, more efficiency
Directional valves
Assembled between attachment and
main control valve
Operated hydraulically or electrally
For one or both lines
1: for both lines
2: for single line (bottom side)
Up to 400 l/min
Up to 420 bar

Folie 15
Back pressure reduction by dump valves: More power, more efficiency
Directional valves
2/2 or 3/3 directional valves
Electrically piloted Hydrauli
cally piloted Normally open
ed or closed
Up to 400 l/min
Up to 420 bar
147.901.105.9 (hydr.)
227.314.207.9 (elec.)
Type D33-1N3
Type D22-NA

Folie 16
Manipulating Pressure and Flow: Protection of Tool against to high hydraulic power
Pressure relief valves
Assembled in bypass to attachment and
between main control valve
Fixed adjustment or electrally controlled
For one or both lines
Wessel Tool Control all
ows various adjustme
nts in case of using di
fferent tools
11
16
15
13
14
17
P T
1
12
5
2
34
Pressure control valves
Control of main spool for flow limitation

Folie 17
Manipulating Pressure and Flow: Protection of Tool against to high hydraulic power
Pressure relief valves Pressure control valves
Type PCV-1N: electric –
prop., 4lpm, 20 or 30 bar
12 Volt, 24 Volt
From 1 to 6 valvesType PRV-CP:
Manual adjustment,
400 lpm, 380 bar
Housing for single valve
Housing for double valves

Folie 18
M
P
LS P
T18
17
1614 15
13
12
11
1
1
2
Installation of Tiltrotator and gripper function
The below example shows the retrofitting of a gripper function in which a tiltrotator is also used.
The volume flow is take from a section of the backhoe hydraulics provided for this. Thus, the structu
re for Open and Closed Center systems suggested here is applicable. With activation of one of the fu
nctions, the main control valve switches and the flow is sent to the directional valve with flow control
function 1 and to tiltrotator 2. The not needed flow is fed to the tank via an input pressure compens
ator on tiltrotator valve 2. So that the valve 1 can thus also work with higher load pressures, the loa
d pressure must be reported to the input pressure compensator of the valve 2 via an LS line. Openin
g/closing, tilting and rotating can be performed independently of each other and independently of th
e load pressure.
Tilting Rotation
3 4
5
6
7

Folie 19
Tiltrotator Control
2 proportional directional valves
•Operating behind the main spool section
•2 x Flow 50 l/min
•load and pump pressure independent
•Proportional control
296.311.700.9
Type FC2-K1

Folie 20
Quick coupler operating
•Optimized size
•Maximum inlet pressure 420 bar(6000psi)
•With pressure switch
•With option for accumulator
•Adjustable pressure control valve for
cylinder protection
•Leakage free checkvalve
P
R
A
B
DR
ACCU
221.311.64X.9
11
16
15
13
14
17
P T
2
1
12
LS P
3

Folie 21
Speed valve
Increases performance of crusher and shears significantly
• from 250 to 1000 l/min
• cutting in regeneration mode until high pressures
(adjustable up 300 bar)
• 400 bar!
• reliable operation also with high backline pressures
(up to 80 bar)
136.914.304.9 (250lpm)
137.914.324.9 (400lpm)
138.914.315.9 (800lpm)
CLOSE >>>
BS AS
AZ
Regen-Mode
Normal
p > 250bar
Regen
p < 250bar
Normal
p >250bar
Regen
p <250bar
CLOSE >
BS AS
AZ
Normal-Mode

Folie 22
Leakage free cylinder by assembling of load holding valves
For cylinders on booms of excavator/wheel loader
• Symmetrical design for connections
• Direct and sensitive control
• With integrated pressure relief function
• 420 bar and up to 600 lpm
426.063.956.9 (3/4“)
427.063.956.9 (1“)
428.063.906.9 (11/4“)
11
16
15
13
14
17
P T
1
12
2
3

Folie 23
Safe and reliable operating of hydraulic attachments!
Quality and Service by
WESSEL-HYDRAULIK GmbH
영업관련 문의
하이드팩(HydPAC)
Tel: +82-(0)31-307-2177
e-mail: sales.hydpac@hydpac.com
Homepage: www.hydpac.com

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