Let’s make it simple. Buy Rain Bird one inch valves. They are the best valve to use. If you are into high pressure systems (over 80 psi) get an upgraded valve that is dull black. The dull black valves are a nylon plastic composite that is stronger than a shiny black valve. If you need a high pressure valve go to a real plumbing or sprinkler store. Big box retailers will not carry this valve.
Nowadays, the majority of contractors put in Hunter. Rain Bird was the standard for many years. Then, Hunter came in and priced their valves one dollar less than Rain Bird. Since the quality was similar, contractors slowly switched to Hunter. Hunter valves are easier to install because they are smaller. They are also easier to repair because they only have four screws on top. Now, the prices are equal, but contractors like the ease of the Hunter valves.
Flow Control
You may wish to check for a flow control knob. This means you can turn down the water pressure to that valve. Most of the time, you will never need to use the flow control. Most people never touch them. They are valuable, although, because you can turn the water off to that valve if it is leaking. In addition, if the valve won’t quite shut you can slightly turn down the flow control and the valve will work properly.
Why and how does tire lose pressure?
Tire basically losses pressure through the lost of air. This is mainly through the air permeation both from the rubber body as well as natural leakages through various parts of the tires. The other factor that affects tire pressure is temperature - generally, a drop in temperature will result in ‘lost’ of pressure. As a rule of thumb, the tire losses 1 psi for every 5 degree Celsius drop in temperature.
How do you know the correct tire pressure for your car’s tires?
* The information is usually provided by your car manufacturer. You can usually find the information at the owner’s manual, inside of your glove box, or at the doorjamb.
How to tell whether the tire pressure is at the correct level?
* The best way to know if your tire pressure is at the correct level is by using a tire pressure gauge. There are digital tire pressure gauge available in the market that can be very handy and tells the tire pressure accurately. DO NOT not rely on visual inspection to gauge the tire pressure as it is often inaccurate.
How frequently should you check your tire pressure?
* The recommended checking interval is once a month or earlier.
Tire Valve
The tire valve allows air to be pumped into the tire and the one way valve holds the air within the tire.
Tire valve is essentially a component that is supplied together with the tire by the tire manufacturer and generally made of rubber material. It can deteriorate over time and thus reduces its effectiveness in keeping the the air remain in the tire pressure. When the vehicle is going at high speed, a tire valve that is deteriorated can actually bend as a result of centrifugal force and thus resulted in possible air loss. For safety reason, it is recommended that they are replaced when new tires are bought.
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