8 tube materials in atex applications – Watson-Marlow 620RA User Manual

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ATEX: Watson-Marlow 620RA, 620REA and 620RE4A pumpheads User Manual

8 Tube materials in ATEX applications

The following Watson -Marlow tube materials are suitable for use in ATEX applications:
Pumpsil (platinum cured silicone)

● Pumpsil (platinum cured silicone)

● Marprene

● Bioprene

● STA -PURE PCS

● STA-PURE PFL

● Neoprene

● PVC

Please note from the table below that there are limitations of length that can be used
for certain tube materials. Pumpsil cannot be used in any ATEX application above the
specified lengths listed. When using Bioprene and Marprene there is a reduction in
class suitability when they are in contact with Polymides.

Permissible length of tubing (cm) for IIB rating:

Series

Bore

(mm)

Wall

(mm)

Pumpsil

(cm)

STA-PURE

PCS* (cm)

STA-PURE

PFL* (cm)

Marprene**

Bioprene**

PVC

Neoprene

620RA

15.9

3.2

22.3

unlimited

620RA

12.7

3.2

19.1

unlimited

620RA

9.6

3.2

16.0

unlimited

620RA

6.4

3.2

12.8

unlimited

* If length limit exceeded for STA- PURE PCS and STA-PURE PFL, ATEX rating reduced to IIA

** Marprene and Bioprene rated IIA when in contact with Polymides

This manual is related to the following products:

620RЕA 620RE4A