LOW PRICE VALVES
Risks & Responsabilities
TUBELESS VALVES FOR
Possible consequences of the purchase of a valve which does not comply with the
norms and the car manufacturers requirements:
ARG 004 GB-2
PASSENGER CARS
When you buy a cheaper tubeless valve, the saving is minimal but in the event of an accident, you may have to pay millions of euros !
Original Schrader Valve = Quality & Security
Valve choice:
In the event of an accident, the professional is liable. (Both the tyre dealer and the manufacturer).
The valve origin is often unknown and there is no tracability.
SCHRADER : Supplier of OE car and tyre manufacturers since 1898.
Partner of:
RENAULT, PSA, TOYOTA, VOLVO, VW, FORD, SEAT, MERCEDES-DAIMLER, FIAT, OPEL, G.M. ....
MICHELIN, GOODYEAR, DUNLOP, BRIDGESTONE-FIRESTONE....
Tests results on cheaper tubeless valves:
Possible problems:
- the rubber compound deteriorates during rolling (speed, pressure, temperature...)
- natural rubber (strong smell, bad oil resistance)
- no adhesion brass and rubber
- bad ozone resistance (rubber cracks)
- brass which does not comply with the directive 2005/53/EC
- use of mixtures of self-adhesive rubber
- core leaking
- bad machining (chips, incorrect thread... )
- creep areas in the rim fitting
- bad pull out force
- rubber too hard making the assembly difficult.
50 YEARS OF EXPERIENCE
The tubeless tyre appeared in the U.S. in 1955 and
required the creation of a special valve.
This valve was designed by SCHRADER USA.
Damaged valve core washer
Flashes
Adhesion
Deformation
Pull out valve
FF2006.05/cc/ARG 004-GB-1
Creep areas
(IPNS) Uncontractual document / The Management of Schrader reserves the right to modify this leaflet and/or the products described therein without notice
All these defects may lead to an immediate tyre run flat.
Schrader logo on each
tubeless valve with
manufacturing date
US Patent
N° 77/784,727
dated 20/07/2009
Schrader s.a.s - B.P 29 - 48, rue de Salins
25301 Pontarlier cedex - France
Tél. : +33 (0) 3 81 38 56 56 - Fax : +33 (0) 3 81 46 41 42
E-mail : [email protected] - www.schraderinternational.com
1. Raw material
- Our rubber and brass composition complies with the European
Directive 2000/53/EC concerning and of life vehicles .
(our brass alloy contains less than 4% of lead by weight)
- Our synthetic EPDM mixture gives continued security:
. good ozone resistance, meaning a good ageing resistance
. high temperature and pressure resistance
. high flexing resistance
- Raw material certificates are enclosed with each batch.
Automatic controls 100% integrated in process manufacturing.
3. Laboratory tests
Brass valve stems
Fluids : air and nitrogen
Rubber hardness
Cold impact test
Alternate flexion test
Valve should burst at a pressure greater than 20 bar
Resistance to cold and high temperature (-40 to +100°C)
Ozone resistance
Leakage test
Pull in force : 200 to 400 N for an easy mounting
Pull out force : 600 N guarantiing a perfect base mounting
2. Manufacturing process
Laboratory pull out force
Stem machining
100% automatic leakage test
- 24 controls during stem machining (including core chamber depth, tread...).
- 7 controls during rubber moulding (rubber/brass adhesion...).
- 8 assembly controls (including airtightness, core pin head position, torque, dimensional
conformity, valve identification with the letter S).
I.E. 39 CONTROLS FULLY INTEGRATED FOR YOUR SAFETY.
Assembly line
Cores assembly
4. Norms
- Products conform to ETRTO and ISO. (required on O.E. market).
- Conform to European Directive 2000/53/EC concerning end of life vehicles.
- Conform to European Directive 2005/673/EC concerning waste collection.
- The plant in Pontarlier is certified: ISO 9001, ISO/TS 16949, ISO 14001...