Description
10
4000481-04
3.5
Area of Application
Diaphragm pump explosion-proof models are intended for:
Aspirating, pumping and compressing neutral and aggressive gases and vapors.
Generating a vacuum down to an ultimate pressure < 8 mbar or < 2 mbar.
Aspirating, pumping and compressing an explosive atmosphere
– comprising air and
combustible gases, vapors and mists in any mix ratio
– from zone 1 areas at risk of ex-
plosion (device category 2 according to ATEX).
Installation and operation of the diaphragm pumps in zone 1 areas at risk of explosion
(device category 2 according to ATEX).
The permissible temperature classes and explosion groups of the atmospheres
– com-
prising air and combustible gases, vapors and mists in any mix ratio
– that are to be
pumped or which are ambient are determined according to the specifications of standard
EN 13 463-1. The diaphragm pumps mentioned here have been assigned to T4 IIB.
Substances that tend to decompose spontaneously, such as acetylene C
2
H
2
, carbon di-
sulfide CS
2
and explosives, lie outside the scope of the application of Atex-Directive
2014/34/EU
.
Part and/or part group
Material
Surface resistance
Connecting head
PTFE carbon-fibre reinforced
10
3
PTFE insert
PTFE carbon-fibre reinforced
10
3
Pump head
PTFE carbon-fibre reinforced
10
3
PTFE layer diaphragm
PTFE
10
17
Valve
PEEK
10
15
Manifold
PP
10
14
Screws fitting
PVDF
10
14
Check valve
PVDF
10
14
Vacuum hose
PTFE
10
17
Tensioning disk
PTFE coating
10
17
O-Rings
EPDM
10
7
3.6
Scope of Delivery
The scope of delivery is specified in the supply contract.
