Dosing Precision; Viscosity; Wetted Materials - ProMinent Makro TZ Operating Instructions Manual

13.2.2

Dosing precision

13.3

Viscosity

Design
no valve springs
with valve springs
with appropriately laid out installa‐
tion
with appropriately laid out installa‐
tion and advice from ProMinent
13.4

Wetted materials

Tab. 4: with DN 25 ball valve
Material ver‐ Liquid end
sion
PPT Polypropylene
PCT PVC
TTT PTFE with
carbon
SST Stainless steel
1.4571/1.4404
HCT Hastelloy C4
* for measurements taken under constant conditions, minimum
30% stroke rate and water at 20 °C - when installed correctly, p< 1
bar
Data
Dosing precision
* at maximum stroke length and maximum back pressure
The liquid ends are generally suitable for the following viscosity
ranges:
Area
500 ... 1000 mPas
* Only when the installation is correctly adjusted.
Suction/pres‐ Seals
sure connector
PVDF PTFE
PVDF PTFE
PTFE with PTFE
carbon
Stainless steel PTFE
1.4571/1.4404
Hastelloy C4 PTFE
Unit
0 ... 200 mPas
200 ... 500 mPas
over 1000 mPas
Valve balls
Borosilicate glass
Borosilicate glass
Ceramic
Stainless steel
1.4401
Ceramic
Technical data
Value Unit
±1 % *
Valve seat
PTFE
PTFE
PTFE
PTFE
PTFE
75