Burkert Type 2036 - Manual (Page 18)

18
TechnicalData
Type 2036
Connections
Port connections welded spigots
DIN EN ISO 1127 / ISO 4200) /
DIN 11866 Series 2,
DIN 11850 Series 2 / DIN 11866 Series A
ASME BPE / DIN 11866 Series C
Clamp
DIN 32676 Series A (DIN pipe)
DIN 32676 Series B (ISO pipe)
ASME BPE
(other connections on request)
Pilot air port G1/8
Surface quality interior Ra 0.6 µm passivated
exterior Ra 1.6 µm machined
optional electro-polished
(other surface finishes on request)
Installation position any position; preferably connection B
downwards; for self-drainage see chapter
"5.4. Valve self-draining"
The service life of the device depends heavily on the conditions of use.
Especially the service life of the diaphragm depends very heavily on
the conditions of use, such as the medium, temperatures, switching
frequency, pressure etc., and may vary widely in individual cases.
7.6.1. Diaphragm
The diaphragm seals the valve. It must be selected with care. The
choice of material should be made bearing in mind the process
medium, the temperature and the mechanical boundary conditions
(e.g. operating pressure, switching frequency etc.).
The standard materials are contained in the following table.
For conformity with FDA CFR 21 Para. 177.2600 or Para. 177.1550
and USP VI certification, see "Tab. 1: Diaphragm materials".
Diaphragm
material Code Description of
material
Use FDA USP
VI
EPDM AD Peroxide-vulca-
nized ethylene-
propylene
rubber Oxidizing
chemicals,
steam and hot
water x x
Advanced
PTFE /
EPDM EK Advanced PTFE
laminated
EPDM Most chem-
icals and
acids x x
FKM KL Fluorinated
rubber Acids and
mineral oils x
Silicone SK Platinum-sta-
bilized silicone
rubber Aliphatic oils x x
Tab. 1: Diaphragm materials
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