45
Starting Torque at VF10 VF15 VF25 VF32 VF40 VF50 VF65 VF80
0 bar Nm 55 75 115 210 320 620 1150 2000
5 bar Nm 55 75 120 210 320 620 1150 2000
7.5 bar Nm 55 75 120 210 320 810 1810 3100
10 bar Nm 55 75 140 250 400 1100 2300 4000
15 bar Nm 55 75 160 300 480 1300 2800 5000
4.8 Lubrication
The standard lubricant is VERDERLUBE, a specially formulated food grade lubricant, which is
designed to reduce the friction between hose and rotor shoe, thus reducing the wear and tear on
the hose and on the shoes. The lubricant is food grade standard, blue in colour and can be
used at temperatures ranging from -40°C up to 100°C (-40°F up to 210°F)
It is vital that lubricant levels are monitored at all times - an increase in levels of lubricant will
indicate hose failure. If this occurs, the product will be contained within the pump housing, but
performance will deteriorate and eventually cause product contamination. It is recommended
that you fit a hose burst detection unit
The pump must always be filled with the correct amount of lubricant see in table below:
Pump Size Capacity in Litres Capacity in U.S. Gallons
VF10 0.25 0.07
VF15 0.5 0.13
VF25 2 0.53
VF32 2.5 0.7
VF40 5 1.3
VF50 10 2.6
VF65 25 6.6
VF80 35 9.24
Note: If level plug is fitted to front cover this can be removed temporarily and used to gauge
correct fill level.
The safety data sheet for VERDERLUBE is contained in Appendix B - you should consult your
VERDER distributor on any queries
At all times the pump housing needs to be one half to one third filled with VERDERLUBE
lubricant
Check compatibility of the lubricant with the product being pumped; VERDERLUBE is a specially
formulated food grade lubricant containing glycerine. In most cases this is a very stable
compound, but can react when mixed with certain types of substance.
Do not use VERDERLUBE with nitrogenous compounds, concentrated acids or strong oxidizing
agents
If you are unsure of the chemical compatibility of your product with VERDERLUBE, your
VERDER distributor will offer advice and if necessary, supply an alternative lubricant such as
VERDERSIL
