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TAV 100/150
6
14
Description ATEX products
All versions of TAV 100/150 are marked with the CE label. Depending on
model and purpose of use, some TAV 100/150 also have the EX symbol and
category marking. All TAV 100/150 marked with the EX symbol are category
3D equipment according to directive 2014/34/EU. This means that models
with the EX symbol may be placed in areas classified as zone 22 according to
directive 1999/92/EC.
The manually operated TAV 100/150 MA is not marked with the EX symbol as
manually operated equipment does not fall under the scope of the directive
2014/34/EU. Even if the TAV 100/150 MA does not have the EX marking, it is
highly suitable for use in areas classified as zone 22 and share the same high
level of protection as the TAV 100/150 with EX marking.
Please note that TAV 100/150 MV 24 V AC/DC does not have the EX marking
and may not be installed in classified areas.
Category limit
The function of the TAV 100/150 is to be a part of an extraction piping system.
Even if the TAV 100/150 with EX symbol is category 3D equipment for use in
zone 22 (TAV 100/150 exterior), it can be used with piping system internally
classified as zone 20 or 21.
As there is no internal ignition source inside the TAV 100/150, it is to be
considered as simple piping and does not fall under the scope of the directive
2014/34/EU.
Permitted materials
The TAV 100/150 is only intended to be a part of an extraction system
transporting dusts with the following properties: MIE (Minimum Ignition
Energy) > 3 mJ and MIT (Minimum Ignition Temperature) > 205 ºC. Do not
extract items that may cause ignition or blocking.
Main components
Figure 3 shows a TAV 100/150 MV. MV indicates that the control device is a
solenoid valve. Figures 3 - 5 show two different types of pilot switches, micro
switch A and pressure-controlled switch B.
1.
Housing
2.
Sealing strip
3.
Stainless steel valve disc
4.
Nylon sealing ring
5.
Chloroprene back-up ring
6.
Arm
7.
Cylinder
8.
Solenoid valve
9.
Pneumatic push-in nipple. (Push the ring to release the hose.)
10.
Electric connection
11.
Restrictor valve to set the speed of the valve disc when opening (NC
valve)
12.
Restrictor valve to set the speed of the valve disc when closing (NC valve)
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