What does wog mean on a ball valve?
water, oil, gas
WOG (water, oil, gas) is an older term that is no longer used as frequently as it once was. It simply means that the valve is intended for use with water, oil or gas, with the exception of combustible gases.
Can ball valve be used for hot water?
The ball valve is used as shut-off valves in the distribution of hot and cold water.
What is wog valve rating?
The WOG rating specifies the maximum pressure per square inch that a valve can handle while the WOG indicates the valve is suitable for Water, Oil and Gas.
What type of valve should be installed on a water heater?
Globe valves are often used as water shutoff valves on heating boilers, at outdoor hose bibbs or sillcocks, at water pressure tanks, clothes washer connections, and water heaters (calorifiers, cylinders, geysers). Globe type valves are also used in a smaller form as fixture shutoff valves at sinks and toilets.
How much pressure can a ball valve handle?
Ball valves are extremely versatile as they can handle pressures up to 1000 bars and temperatures up to 400 degrees.
How do you size a ball valve?
If the internal diameter (ID) of the hose is close to 2” you will need a 2” ball valve, or if the external diameter of the male thread is close to 2” you will need a 2” ball valve.
What are the types of ball valves?
There are five general body styles of ball valves: single body, three-piece body, split body, top entry, and welded. The difference is based on how the pieces of the valve—especially the casing that contains the ball itself—are manufactured and assembled.
Which is better ball valve or gate valve?
Ball valves are more effective at forming a tight seal and have more reliability and longevity than gate valves, but tend to be more expensive. They are often used for shutoff and control applications. Because ball valves can open and close immediately, they are more likely than gate valves to cause water hammer.
Do ball valves restrict flow?
The center of the ball has a hole — when the hole and pipe are aligned, fluid can flow. Turn the handle 90 degrees and the flow is shut off, hence the reason ball valves are classified as quarter-turn valves. If the hole through the ball is smaller than the bore of the pipe, it restricts the flow.
Which type of valve is used in homes?
Pressure balancing valves are the most common type of household valve. This type of valve has a single control and a handle.
Can you use PVC for water heater relief valve?
No. PVC pipe is not rated by the building code for use with hot water, so the installation shown above is wrong and unsafe. If the temperature and pressure relief (TPR) valve opens because the water heater is overheating, the water will be over 200º F.
Can you use PVC fittings on a hot water heater?
The short answer: No. Explanation: PVC is a thermoplastic, and therefore, at some point it will begin to degrade and break down as it’s heated up. It just so happens that Schedule 40 PVC’s maximum operating temperature is 140 degrees Fahrenheit, around the same temperature that hot water gets to in most homes.
What is code for water heater pressure relief valve?
Item 10 requires the relief valve to terminate no more than 6 inches (152mm) above the floor surface, a waste receptor or floor drain in order to prevent hot water discharge from being directed onto a building occupant that may be nearby.
What size line should you run from the relief valve on a residential water heater?
The discharge tube attached to the water heater pressure/temperature relief valve should be the same diameter as the opening of the valve itself. In our photo someone has fastened a 1/2″ pipe discharge tube onto a 3/4″ diameter relief valve.
How do I know what size pressure relief valve I need?
Here are six factors that must be considered when selecting and sizing safety or pressure relief valves.
- Connection size and type. The valve size must correspond to the size of the inlet and discharge piping. …
- Set pressure (PSIG) …
- Temperature. …
- Back pressure. …
- Service. …
- Required capacity.
What kind of pressure relief valve do I need?
The pressure rating of the relief valve must be equal to or less than the MAWP of the vessel. Most water heaters have an MAWP of 150 psi; however, some are rated higher, typically 160 psi. Some storage vessels have a lower pressure rating; they are commonly rated 125 psi.
Does my water heater need a pressure relief valve?
The relief valve is an important safety feature on the water heater. If the water inside the unit gets too hot (usually above 210 degrees) or pressure builds up too high (above 150 psi), the water heater can become damaged or even explore.
How much pressure should a water heater have?
about 150 PSI
Usually, water heaters are set to hold about 150 PSI (Pounds per Square Inch). When the pressure of the water inside of the tank goes over that, then the temperature and pressure relief valve will open, until the pressure is released.
How do you know if your water heater has too much pressure?
Is My Water Pressure Too High? The signs are well known: Banging pipes, running toilets, dripping faucets, and running out of hot water very quickly all indicate that the pressure is too high in your system. Test your system with a water pressure gauge, available at any home store for around $10.
