• Carefully remove the old valve by turning it out in a counter-clockwise direction using a suitable tool (such
as a 19 mm open wrench). Do not apply force however; this could damage the thread of the radiator.
Carefully catch any water that comes out.
• Screw in the new valve. The valve is self-sealing, hemp or sealing strips are not needed.
The valve must be installed at the highest point on the radiator.
Install the valve so that the valve head faces upwards or lies in a horizontal position.
In any case, the valve head must not face downward.
• Depending on the heating system/radiators you may now open the radiators again or refill water into the
heating system.
• The necessary bleeding happens automatically.
Quick bleed (manual bleeding)
Upon initial start-up (or after the heating system‘s water was drained and refilled during maintenance), a
quick bleed can be carried out.
A quick bleed carried out while hot water is still inside of the radiator or the heating pipes poses
the risk of scald injuries! For safety reasons, perform a quick bleed therefore only when the
radiator is cold.
Have an absorbent cloth or a small container ready to catch the water coming out.
• Turn the small round valve head by hand 1 - 2 turns to the left in a counter-clockwise direction.
• If water spurts out, re-tighten the valve head immediately by hand.
Check valve
An internal check valve will protect against water spurting out. if the valve head is completely loosened.
If, however, the water in the heating system is heavily contaminated, the check valve may not
be 100% leak-proof due to suspended matters. For that reason do not leave the bleed valve
unattended over a longer time, if the valve head is fully screwed in.
Care and Cleaning
• Never use abrasive cleaning agents, cleaning alcohol or other chemical solutions, since these could dam-
age the enclosure or even impair operation.
• Use a dry, lint-free cloth to clean the product.
Disposal
Please dispose of the product according to the current statutory requirements, when it is no
longer of use.
Technical Data
Connection ........................................... 12.7 mm (1/2“)
Operating medium ............................... Water (without additives)
Operating pressure ............................... 0.1 - 8.5 bar
Operating temperature ......................... max. +100 °C
Dimensions ........................................... 26 x 26 mm (Ø x H)
Weight .................................................. 47 g
Operating Instructions
Vent Valve 12.7 mm (1/2“), set of 5
Item no. 1456297
Intended Use
The product is designed to fully automatically bleed radiators, which are connected to a hot water central
heating unit.
For safety and approval reasons, you may not convert and/or alter the product. If you use the product for
purposes other than those described above, the product may be damaged. Furthermore, improper use car-
ries the risks of short-circuits, fire, etc., for example. Please read the operating instructions carefully and do
not discard them. If you pass the product on to a third party, please hand over these operating instructions
as well.
This product complies with the applicable national and European requirements. All names of companies and
products are the trademarks of the respective owners. All rights reserved.
Package Contents
• 5x vent valves
• Operating Instructions
Up-to-date operating instructions
Download the latest operating instructions via the link www.conrad.com/downloads or scan the QR code.
Follow the instructions on the website.
Explanation of Symbols
An exclamation mark in a triangle indicates important instructions in this operating manual which
must be adhered to.
The arrow symbol is used when specific tips and information on handling are provided.
Safety Instructions
Please read the operating instructions carefully and pay particular attention to the safety
instructions. We do not assume liability for injuries/material damages resulting from fail-
ure to observe the safety instructions and the information in these operating instructions
regarding the proper handling of the product. Furthermore, in such cases, the warranty/
guarantee will be null and void.
a) General
• The product is not a toy. Keep out of the reach of children and pets.
• Do not carelessly cast aside the packaging material. It may become a dangerous plaything
for children.
• Never expose the product to mechanical stress.
• Please handle the product carefully. The product can be damaged if crushed, struck or
dropped, even from a low height.
• If you have doubts about how the product should be operated or how to safely connect it,
consult a trained technician.
• Maintenance, adjustment and repair work may be carried out only by an expert or a specialist
workshop.
• Should you have any questions that are not answered in these operating instructions, please
contact our technical customer service or other professionals.
b) Installation
• The installation should only be carried out by persons with specialized knowledge related to
the installation (for example, heating engineers, installers, etc.).
• Incorrect installation involves various hazards, such as the risk of scalding due to hot water
in the heating unit, the risk of injury due to overpressure in the heating unit. Moreover, huge
material damages may arise due to the water coming out.
• The radiator must be de-pressurised prior to the installation. That is why the heating unit must
be switched off first. After that, the water in the heating unit likely needs to cool down.
In a final step, the water of the heating system must be drained, if necessary. Keep in mind
that water may still run out of the radiator, in which you want to install the bleeder.
Installation
Observe the safety instructions! In cases of doubt allow a professional to remove the old
valve or to install the bleed valve!
Warning!
The radiator and the water of the heating system must have cooled down; otherwise there is a
risk of scald injuries!
Also the radiator and the heating system must be depressurized. Depending on the available
central heating system, radiators can be isolated individually.
Caution!
Even though you have drained the water from the heating system (if radiators cannot be isolated
individually), a lot of water, which will still remain in the radiator or the pipes of the heating sys-
tem, can flow out when removing the old valve.
In any case use a suitable container and protect the areas below or behind the radiator against
water squirting out with appropriate covering.
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication represent the technical status at the time of printing.
© Copyright 2016 by Conrad Electronic SE.
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