Watson-Marlow 620RA - Manual (Page 3)

ATEX: Watson-Marlow 620RA, 620REA and 620RE4A pumpheads User Manual 3
4 Operating parameters
The following tube materials can be used with 620RA pumpheads. Bore sizes range
from 6.4mm to 15.9mm, with 3.2mm wall thickness. LoadSure tube elements are
available in 12mm or 17mm bore:
Tubing: working temperature range
Marprene
5C to 80C
Bioprene 5C to 80C
Pumpsil -20C to 80C
STA-PURE PCS 0C to 80C
STA-PURE PFL 0C to 80C
Neoprene 0C to 80C
PVC 0C to 80C
The following parameters define the boundary of the safe working envelope these
values must not be exceeded (ATEX compliance will be invalidated):
620RA pumpheads
Ambient temperature range 5C to 40C
Max peak pressure (continuous tubing) 2 bar
Max peak pressure (STA-PURE tubing) 4 bar
Max continuous speed
165 rpm (at 4 bar see below)
Max intermittent speed 265 rpm (at 4 bar see below)
Corrosion resistance See 7 Materials
Tube life See 5 Tube failure