Emergencies occur at the most inopportune times. They come without warning and often leave homeowners and business owners feeling helpless. When a plumbing emergency strikes, it's important to contact emergency plumbers as they're better positioned to offer a lasting solution to the problem.

If you keep experiencing backflow issues, emergency plumbers can set up backflow preventers to keep your water clean and safe. Read along to learn four backflow prevention devices that emergency plumbers can use to restore your system.

1. Pressure Vacuum Breakers (PVBs)

PVBs are one of the most common types of backflow preventers. They're typically used in residential homes and are often installed on lawn sprinklers and irrigation systems. PVBs work by allowing water to flow out of your system when there is no pressure difference between the inside and outside of the device. When an emergency plumbing situation, like a broken pipe, occurs and water starts flowing back into your system, the PVB will close and prevent contaminated water from entering your home.

2. Double Check Valves (DCVs)

DCVs are similar to PVBs in that they're designed to protect against backflow by allowing water to flow out of your system when there is no pressure difference between the inside and outside of the valve. However, DCVs differ from PVBs in that they have two check valves instead of just one. This means that if one check valve fails, the other can still protect against backflow. This double layer of protection makes the latter more suitable than the former.

3. Air Gap Devices

Air gap devices are one of the most simple yet effective types of backflow preventers. They work by creating a physical barrier between your plumbing system and a water source. The device must be installed a certain distance from the water source to prevent your water from being contaminated. Air gap devices are often used in commercial and industrial applications, such as in restaurants.

4. Backwater Valves

Backwater valves are designed to stop sewage and other contaminants from flowing back into your home. They're often used in residential applications, such as in homes with basement bathrooms. Backwater valves work by sealing off your sewer line when there is a risk of sewage backup.

Choosing the right type of backflow prevention device is important for protecting your home or business from contamination. If you're not sure which type of device is right for your application, contact a licensed plumber or backflow specialist. Emergency plumbers will help you choose the right device for your needs and install it properly.

For more information, contact an emergency plumber near you.