ATEX Directive: Watson-Marlow 800 series pumps and pumpheads User Manual
7
9. Materials of construction:
800 series ATEX pumpheads
Description
Part No, 825 Part No, 840
Material
Finish
Track
HFZ8013C
Aluminium LM25TF
paint
Door
HF1264C
HF1402C
Aluminium LM25TF
paint
Window
HF1005S
HF1005S
PVC
Pin - hinge
HF1007T
HF1107T
Stainless steel 303S31
Spacer - hinge pin
HF1224T
HF1224T
Nylatron GS
Tube clamp, static
HF1211T
HF1411T
Aluminium HE30
Tube clamp, dynamic
HF1212T
HF1412T
Aluminium HE30
Pin - tube clamp
HF1213T
HF1413T
Stainless steel 303S31
Insert - tube clamp
HF1228T
HF1428T
Stainless steel 303S31
Rotor
HF1203C
HF1403C
Aluminium LM25TF
Paint
Plate - rotor clamp
HF1244T
HF1421T
Stainless steel 303S31
Spacer - rocker
HF1208T
HF1408T
Nylatron GS
Pin - rotor pivot
HF1210T
HF1410T
Stainless steel 303S31
Spacer - pivot pin
HF1225T
HF1408T
Nylatron GS
Spring - rotor torsion
HF1237B
HF1437B
Stainless steel 302 AMS5688
Rocker
HF1204C
HF1404C
Aluminium LM25TF
paint
Plate - rocker side 1
HF1219S
HF1419S
Stainless steel 304S31
Plate - rocker side 2
HF1220S
HF1424S
Stainless steel 304S31
Spacer - rocker
HF1223T
HF1423T
Stainless steel 303S31
Rollers
HF1216T
HF1416T
Stainless steel 316S16
Bearing - ball
BB0044
BB0047
Steel (1%C; 1.5%Cr)
Spindle - roller
HF1217T
HF1417T
Stainless steel 316S16
Seal - shaft
OS0038
OS0041
NBR/Stainless steel
Spring
SG0013
SG0015
Stainless steel
passivate
Pedestal - gearbox
HF1242S
HF1242S
Stainless steel 304S11
Frame - support
HF1271S
HF1272S
HF1467S
HF1468S
Stainless steel 304S11
Switch - door
(ATEX rated)
SWZ8002
SWZ8002
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.