Watson-Marlow 700 series - Manual (Page 9)

ATEX Directive: Watson-Marlow 700 series pumpheads User Manual 9
Description Part No. Material Finish
Gear - wheel, helical MR0666T Mild steel EN1A Zinc plate
Shaft - drive MR0393T High tensile steel EN24 Nickel plate
Plate - front MR0363C Aluminium alloy LM24 Paint
Plate - back MR0366C Aluminium alloy LM24 Paint
Track MR0364C Aluminium alloy LM24 Paint
Rotor - flange MR0879C Aluminium alloy LM24 Paint
Cradle MRA0152A Aluminium alloy LM24 Paint
Tube clamp MR0880C Aluminium 6063
End cap - cradle, lh MR0881C Aluminium 6063 Paint
End cap - cradle, rh MR0875C Aluminium 6063 Paint
Knob MR1002T Aluminium 2011
Springs
SG0001/
SG0005
Stainless steel 301S21
Screws / studs Stainless steel 303S21
Roller shafts MR0653T Stainless steel 303S21
Rollers MR0652T Polyamide and MOS2
Lock - tube clamp Polyamide and glass
Bearing - ball
BB0014/
BB0018
Steel, 1% carbon,
1.5% chromium
Earth lead - ATEX MRA0071A Copper Tin coating
10 Materials of construction:
701RA pumpheads
11 Summary of modifications
ATEX features of 701RA pumpheads
Earth strap An earthing bond links the safeguard and the track
ATEX label
This is a requirement of the Directive and includes the ATEX
rating for the pumphead (II 2G IIB c T4)
ATEX manual
This is an addendum to the existing manual
and includes ATEX specific information
The above materials have been carefully selected and have a well proven track
record. However, if there are any aggressive chemicals present then it is imperative
that a risk assessment is conducted. This must not be limited to just the pumped
fluid but should also include any other aggressive fluids in the intended operating
environment.