Where is the low pressure valve for the AC?
The low side service valve is located in the line that runs from the compressor through the evaporator (firewall) and up to the condensor on the low pressure (suction) side of the system.
Is AC Schrader valve same as tire?
The Schrader valve (also called American valve) is a type of pneumatic tire valve used on virtually every motor vehicle in the world today. The Schrader valve consists of a valve stem into which a valve core is threaded. The valve core is a poppet valve assisted by a spring.
How does a AC Schrader valve work?
Schrader valve consists of two main components – the threaded hollow shell and a poppet valve that sits inside. The valve is designed in such a way that it allows the user to either add or remove air or refrigerant in a high-pressure environment without any leakage.
Are there different types of Schrader valves?
There are three types of bicycle innertube valve: Schrader, Presta, and Woods. Tubeless valves come in two types: Schrader and Presta. Found on all motor vehicles as well as bikes with wider tyres, the Schrader valve is user-friendly.
Are all Schrader valve cores the same?
Generally, all Schrader valves used on tires have threads and bodies of a single standard size at the exterior end, so caps and tools generally are universal for the valves on all common applications.
Do I have a Schrader or Presta valve?
For the most part, inner tubes and tubulars on road bikes will use Presta valves, and mountain bikes will use Schrader valves. The visual differences between the two are obvious, with the Presta (pictured above) being slimmer, lighter and having a lock nut to close that you can see on the top.
Why are Presta valves better?
So to sum up, the advantages of Presta valves are that they allow a higher air pressure, require a smaller hole in the rim and can be purchased in various lengths to suit the profile of your rims. It’s very unusual to see Schrader valves used on road bike tubes and wheels.
Why are Presta valves so difficult?
The only time it has been difficult is when the valve stem was too short for the deep rims I have, so there was no enough stem for the pump head to clamp onto. Solution was to buy a valve extender. With my floor pump, you can easily tell when you have a good connection.
Do you need a special pump for a Presta valve?
To inflate a Presta valve you’ll need a regular air pump and a special adapter. The adapter effectively converts your Presta valve to a Schrader valve so that you can use a traditional air pump to inflate it.
Do Presta valves need caps?
Not necessary at all to use a valve cap on a Presta tube, but you should use one on your spare tube to prevent the valve from damaging it. Those caps weigh nothing so you’re not going to notice anything there.
What does a Presta valve look like?
Presta: About half as wide as a Schrader valve and made entirely of metal. They taper slightly toward the top, and some are threaded all the way down. The valve stem opens by unscrewing a knurled (textured) nut at the top.
How tight should Presta valve nut be?
If you want to use the nut, inflate and lightly tighten it down after inflation with your fingers (there are some other schools of thought on how to use them, but this is probably the simplest). Don’t over tighten it or you’ll damage the tube.
Does length of Presta valve matter?
Presta valves come in different lengths too. With deeper section rims becoming more common, it’s important to make sure that your valve is long enough to protrude through the rim and let you attach a pump to it. Presta valve inner tubes are available from a range of makers with valve lengths up to 80mm.