2. INTENDED USE
- The WEH
®
TVR300 Check valve has been exclusively designed for reliably preventing
return flow in a gaseous or liquid media flow.
Î
Never use the WEH
®
Product as a safety valve.
- The WEH
®
Check valves were only developed for reliable return flow prevention. They
are not designed to be used as filling or safety valves. The separation or shut off
between different media or a medium and vacuum also does not represent a
fundamental intended use. If you have such an application or a similar application,
please contact us!
Note:
The TVR valve has not been designed for use as a body that creates a complete
seal between two operating media, or one operating medium and the atmosphere or a
vacuum. The functionality of the inner seal depends on the pressure differential in the
seal direction along with many other operating conditions.
Î
Only use the WEH
®
Product for industrial applications. The product was designed
and tested for that purpose. For automotive application, products with special ap-
provals are required.
- The WEH
®
Product is outfitted with an FKM seal as a standard feature. Other sealing
materials are available on request. Before using the product, please check the media
compatibility of the seals with your application.
- Only install the WEH
®
Product into a line system if the same medium is applied on both
sides and the system is operated at nominal load. Operation of a system at partial load
can cause flow disruptions that take effect in the form of vibrations or noises.
Î
Always ensure that the WEH
®
Product is used only within the range of its intended use.
Please note in particular the technical data of the WEH
®
Product in
as well
as the marking on the WEH
®
Product itself.
- This WEH
®
Product is generally classified as pressure accessory in accordance
with Article 2 (5) of the Pressure Equipment Directive 2014/68/EU and is consid-
ered to be similar to piping. This WEH
®
Product may not be used as safety acces-
sory. Furthermore, it is pointed out, that this WEH
®
Product is designed and placed
on the market in accordance with the requirements of Article 4 (3) of the Pressure
Equipment Directive 2014/68/EU. The assessment with regard to a different classi-
fication can, however, be made on request.
Caution:
Any use beyond the scope of application is considered as unintended use
and may result in personal injury and/or property damage.
MD-10212-L51-R1.0.0-03
Page 9
Operating instructions
AE
