17.3 Viscosity
Tab. 30: The liquid ends are suitable for the following viscosity ranges:
Design Viscosity in mPas
Standard 0 ... 200
With valve springs 201 ... 500
With HV head 501 ... 3000*
Self-degassing (SEK) 0 ... 50
* Even significantly higher with correctly adjusted installation. Contact Technical Support in Heidelberg.
Tab. 31: General information on selection according to viscosity.
Viscosity in mPas Options Stroke rate (strokes/minute)
0 ... 200 No specific options required Any stroke rate.
201 ... 500 Valves fitted with springs HV1 mode: Stroke rate max. 160
strokes/minute.
501 ... 1000 Valves fitted with springs.
HV head recommended.
A positive flow is required.
Stroke length >75%.
HV 2 mode: Stroke rate max. 120
strokes/minute.
1001 ... 3000 Select an HV head.
Valves fitted with springs.
A positive flow is required.
Stroke length >75%.
HV 3 mode: Stroke rate max. 80
strokes/minute.
> 3000 Contact Customer Service to select a suitable pump.
17.4 Material specifications
Design Dosing head Suction/pres‐
sure connector
Ball seat Seals Valve balls
NPT Clear acrylic PVDF PVDF PTFE Ceramic
PVT PVDF PVDF PVDF PTFE Ceramic
SST (8-12 mm) Stainless steel
1.4404
Stainless steel
1.4404
Ceramic PTFE Ceramic
SST (DN10) Stainless steel
1.4404
Stainless steel
1.4404
PTFE with carbon PTFE Ceramic
Diaphragm with PTFE coating.
Design Housing Hood Transparent cover Electronics
all Polyphenyl ether
(PPE with fibre‐
glass)
Polyphenyl ether
(PPE with fibre‐
glass)
Polycarbonate Electronic compo‐
nents
Liquid ends
Pump
Technical data
117
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