VIEWEG DV-5625-U User manual

VIEWEG
Dosier- und Mischtechnik
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Made in Germany
Instruction Manual
Diaphragm Valve DV-5625-U / SS
© VIEWEG GmbH 2012
V1.1 AUG 2014

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
Contents:
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
3 Port Description . . . . . . . . . . . . . . . . . . . . . . . . Page 4
4 Operation Principles . . . . . . . . . . . . . . . . . . . . . . Page 5
5 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . Page 6
5-1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
5-2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . Page 9
6 Sectional Drawing & Dimension, Parts List . . . . . . . . . . . . . Page 11
7 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . Page 12

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
1. Introduction
The DV-5625-U /SS is a diaphragm valve designed for precise flow control of low to medium
viscosity materials (under 10,000 cps). The valve is ideal for dispensing cyanoacrylates, reagents,
electrolytes, glues, solvents, paints, alcohol and other volatile substances. Shot sizes may be fine
tuned by turning the stroke adjustment knob at the top of the valve.
2. Specifications
DV-5625-U DV-5625SS
Operating Air Pressure 4.0 ... 6.0 bar 4.0 ... 6.0 bar
Material Delivery Pres-
sure
Max 5 bar Max 5 bar
Maximum Number of
Cycle
500 cycles /min 500 cycles /min
Flux (KV value) 0.3l / min 0.3l / min
Minimum Shot Size 0.001 ml (material dependant) 0.001 ml (material dependant)
Valve Structure Diaphragm Valve Diaphragm Valve
Weight 87 g 87 g
Driving Part Materials Body : AL (Hard coated, Black)
Piston : SUS303
Piston Seal : NBR
Body : AL (Hard coated, Black)
Piston : SUS303
Piston Seal : NBR
Wetted Part Materials Valve Head : UHMW-PE
(option : PTFE, PEEK, Acetal)
Diaphragm : UHMW-PE
Valve Head : Stainless Steel
(option : PTFE, PEEK, Acetal)
Diaphragm : UHMW-PE
Connecting Ports Operating Air Inlet: M5
Material Inlet: 1/8”
Material Outlet: Luer Lock
Operating Air Inlet: M5
Material Inlet: 1/8”
Material Outlet: Luer Lock

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
3. Part Description
1 0 5
1 0 5
1 0 5
1 0 5 1
0 5
Copy 1
copy 1 copy 2 copy 3
Stroke Adjust Knob:
You con control the flux. If you lock
the knob the stroke will be shorter. In
this way you can decrease the flux.
Driving Part:
should not touch material
Material Input G1/8“:
Material output:
Connection type is (Luer-Lock)
Stroke index Tape:
The range of stroke for flux control
is 0 ... 0,6 mm. This range is con-
verted into circle type.
Reference Mark:
Air in Port (M5)
Check Port:
This checks if diaphragm is damaged.
( In case of damage materials will be
leaked )
Diaphragm:
Diaphragm acts as a seal between
driving Part and liquid contacting
part.
Chamber:
Diaphragm acts as a seal between
driving Part and liquid contacting
part.
Dosing needle:
Choose proper needle according
to the dispensed material and its
amount.
Mount Hole:
(opposite side) M5
Dosing Part:
( Material touched )

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
4. Operation Principles
Dispensing OFF Dispensing ON
1 0 5
1 0 5
1 0 5
1 0 5 1
0 5
Copy 1
copy 1 copy 2 copy 3
In the “Normal” state (air off), the
diaphragm is closed – material is
not dispensed.
When air is applied, the diaphragm is opened and
material is dispensed.
Because "Air" is not entering into
the driving parts, the diaphragm
is closed. In this case, the material
path is closed, so material is not
dispensed.
If air is applied to the valve, the diaphragm will
open. At this time material will be dispensed.
You can increase or decrease the shot volume by
adjusting the stroke (shot volume control knob).
Notice
The maximum stroke length is 0.6mm
(1 rotation). There is no effect after turning the
knob more than (1) rotation.
Material
input
Material
output
1 0 5
1 0 5
1 0 5
1 0 5
1 0 5
Copy 1
copy 1 copy 2 copy 3
1 0 5
1 0 5
1 0 5
1 0 5 1
0 5
Copy 1
copy 1 copy 2 copy 3
1 0 5
1 0 5
1 0 5
1 0 5 1
0 5
Copy 1
copy 1 copy 2 copy 3
1 0 5
1 0 5
1 0 5
1 0 5
1 0 5
Copy 1
copy 1 copy 2 copy 3
1 0 5
1 0 5
short Stroke long
small Shot volume large
short long

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
5. Operating Procedure
5-1. Setup
example for general installation:
MATERIAL LINE
VALVE CONTROLLER
VC-1000
AIR IN FROM COMPRESSOR
OR
MATERIAL
IN BOTTLE
OR
MATERIAL IN
RESERVOIR
MATERIAL IN
CARTRIDGE
OPERATING AIR
INLET
MATERIAL
INLET
DIAPHRAGM VALVE
DV-5625-U /-SS
OPERATING
AIR LINE

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
5-1-1) Fasten the valve firmly using mount hole. (M5*P0.8*D98)
5-1-2) Connect air hose to Air In Port and Controller.
Valve driving pressure is Min 4.0 bar or more.
5-1-3) Connect fitting for material supply hose to the inner port (BSPT1/8”)
Notice
5-1-4) Do not insert fitting too deeply (7 mm or more).
5-1-5) Adjust the material pressure (max 5 bar).
When dispensing low viscosity materials (like water, solvent) set material pressure
at 0.5 bar. For high-viscosity materials, set material pressure at 2 bar.
Increase or decrease pressure as needed.
5-1-6) At the time of delivery, the scale of shot volume control knob is being initiated to
point 3 (½ of full stroke). Increase or decrease the number as needed.
Maximum length of stroke is 0,6 mm.
(This is corresponding to the amount when shot volume control knob makes 1
round).
Notice:
If you make 2 or more revolutions counterclockwise, the tensile strength of
spring is weaker and the valve becomes open state all the time. In this way liquid
can be dispensed.

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
5-1-7) After steady mode in controller and reducing pressure of pressure container,
make dispensing the liquid come out slowly.
(This is to remove bubble and dispense the first liquid from valve)
5-1-8) Choose “Prog” or “Manual” mode of controller according to the state of dispens-
ing.
5-1-9) Choose “Prog” or “Manual” mode of controller according to the state of
dispensing:
By increasing or decreasing pres-
sure to container
Pressure increase > Dispensing amount increase
Pressure decrease > Dispensing amount decrease
Thickness of Needle Thick Needle > Dispensing amount increase
Thin Needle > Dispensing amount decrease
Flux Control Knob Long stroke > Dispensing amount increase
Short stroke > Dispensing amount decrease
Dispensing Time Long dispensing time > Dispensing amount increase
Short dispensing time > Dispensing amount decrease
*Choose the way of controlling dispensing time preferentially to get proper dispensing
amount.

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
5-2. Maintenance
5-2-1) Washing
Wash valve thoroughly after using if dispensed liquid has tendency to be stiff or
has possibility to damage liquid contacting part.
First of all dispense all liquid entirely from pressure container, liquid supply hose
and liquid contacting part until sufficient air comes out.
Wash liquid inside of valve with a little of proper solvent.
Then wash thoroughly in order of air > solvent > air solvent
5-2-2) Disassembly
In case of disassembly for washing or replacing part, refer to “7.Exploded View &
Parts List”.
5-2-3) Assembly
• Diaphragm Assembly
• Loosen stroke control knob by turning twice counterclockwise.
• Separate valve head.
• Remove diaphragm by turning counterclockwise.
• Screw new diaphragm carefully to become horizontal to piston road screw-thread.
In case of washing valve head with sharp pin or others,
try not to scratch needle or seat part. If damaged you
need to replace parts because of leakage.
1 0 5
1 0 5
1 0 5
1 0 5 1
0 5
Copy 1
copy 1 copy 2 copy 3
Diaphragm
Diaphragm
seat

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VIEWEG
Instruction Manual Diaphragm Valve DV-5625-U / SS
Notice
If it isn‘t fit thread properly leakage may occur.
After fixing diaphragm at regular intervals(0.4mm) like the picture, for matching cylinder
body and mount screw, please turn to the location that you want using a screw driver
like next picture.
To reinstall valve head fasten L(hexagon)-wrench bolt firmly.
Fasten stroke control knob until it is closed.
Then open it again until stroke is appropriate.
Notice
Scale may not indicate to ‘0’ of reference mark. In this case refer to relative scale.
(No problem to use)
1 0 5
1 0 5
1 0 5
1 0 5 1
0 5
Copy 1
copy 1 copy 2 copy 3
0,4 Gap
Screw Driver
Air Cylinder Body