Tyre Valves (1 Viewer)

[Robert Clark]

Hi Guys

My van has alloy wheels
From this pic would you say that these are aluminium valve stems ?

Thanks in advance

 

[tacr2man]

Just about impossible to tell from looking , try a magnet against them if no pull then they are alloy .
This might be of further help to you
High-Pressure Metal Clamp-In Valves

High-pressure metal clamp-in valves can be used with virtually any wheel and are highly recommended for all track activities, as well as when vehicle speeds may exceed 130 mph. Metal clamp-in valves use a rubber grommet to seal against the wheel when their retaining nut is tightened. While metal clamp-in valve design and styling can result in retaining nuts hidden inside the wheel or visible outside, those with the retaining nut on the outside offer a practical benefit of allowing retaining nut tightness to be checked and adjusted without having to remove the tire from the wheel. Metal clamp-in valves allow a maximum operating pressure of 200 psi and are available to fit either .453" or .625" rim holes, as well as specialty applications, such as 6mm (.236") or 8mm (.315") holes. Metal clamp-in valves use a metal cap and have effective lengths ranging from flush to 2" and are offered in straight or bent configurations to fit wheels with unique shapes. Low profile and lightweight alloy clamp-in valves are also available for racing applications.

Valve Cores
Regardless of the valve type, the valve core is the fundamental sealing device and should be snugly screwed into the valve core chamber. Valve cores come in short and long lengths, with the short length being preferred for high performance applications.

Both nickel-plated and brass valve cores are available. The nickel-plated valve cores must be used in the aluminum valve stems of tire pressure monitoring sensors because using a standard brass valve core in an aluminum tire pressure sensor valve stem will experience galvanic corrosion and the brass valve core will eventually seize in the valve's aluminum barrel.

All valve cores feature a seal attached to a movable, spring-loaded pin that allows pressurized air to pass when inflating a tire, as well as air to escape when the pin is depressed to unseat the seal. While valve cores themselves can accept a working pressure of 300 psi, it is important to protect them from grit, sand and moisture. Grit and sand might prevent valve cores from sealing completely, and moisture can freeze in cold temperatures and defeat the seal.

 

[SandraL]

I cant believe aluminium would be strong enough. I suggest its plated brass or similar.

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[Robert Clark]

I cant believe aluminium would be strong enough. I suggest its plated brass or similar.

How could you tell without scratching the paint off?

 

[Robert Clark]

Just about impossible to tell from looking , try a magnet against them if no pull then they are alloy .
This might be of further help to you
High-Pressure Metal Clamp-In Valves

High-pressure metal clamp-in valves can be used with virtually any wheel and are highly recommended for all track activities, as well as when vehicle speeds may exceed 130 mph. Metal clamp-in valves use a rubber grommet to seal against the wheel when their retaining nut is tightened. While metal clamp-in valve design and styling can result in retaining nuts hidden inside the wheel or visible outside, those with the retaining nut on the outside offer a practical benefit of allowing retaining nut tightness to be checked and adjusted without having to remove the tire from the wheel. Metal clamp-in valves allow a maximum operating pressure of 200 psi and are available to fit either .453" or .625" rim holes, as well as specialty applications, such as 6mm (.236") or 8mm (.315") holes. Metal clamp-in valves use a metal cap and have effective lengths ranging from flush to 2" and are offered in straight or bent configurations to fit wheels with unique shapes. Low profile and lightweight alloy clamp-in valves are also available for racing applications.

Valve Cores
Regardless of the valve type, the valve core is the fundamental sealing device and should be snugly screwed into the valve core chamber. Valve cores come in short and long lengths, with the short length being preferred for high performance applications.

Both nickel-plated and brass valve cores are available. The nickel-plated valve cores must be used in the aluminum valve stems of tire pressure monitoring sensors because using a standard brass valve core in an aluminum tire pressure sensor valve stem will experience galvanic corrosion and the brass valve core will eventually seize in the valve's aluminum barrel.

All valve cores feature a seal attached to a movable, spring-loaded pin that allows pressurized air to pass when inflating a tire, as well as air to escape when the pin is depressed to unseat the seal. While valve cores themselves can accept a working pressure of 300 psi, it is important to protect them from grit, sand and moisture. Grit and sand might prevent valve cores from sealing completely, and moisture can freeze in cold temperatures and defeat the seal.

Did the magnet test and can confirm it’s not stainless steel.

 

[Robert Clark]

The reason I need to know is that I’m fitting Tyre Pal and it says in the instructions NOT to use with aluminium valve stems

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[LesW]

I doubt very much they're aluminum, too prone to corrosion.

Never seen ally valves either.

 

[Robert Clark]

Spoke to ATS Euomaster who asked me to send a pic
Their reply was

“Hi
This is a 2 piece chrome plated brass with the internal being a stainless steel internal stem”

So fitting of the Tyre Pal can continue!

Thanks guys