The New York Application for Approval of Backflow Prevention Devices (DOH 347) is a document that must be completed and submitted to the New York State Department of Health (NYS DOH) for approval of a backflow prevention device. This document is used to demonstrate that the device meets the requirements of the New York State Sanitary Code and the Public Health Law. The application consists of four different types of forms, each with their own purpose: 1. Design Evaluation Form (DOH-347A): This form is used to provide the NYS DOH with information on the design and construction of the backflow prevention device. 2. Test Report Form (DOH-347B): This form is used to provide the NYS DOH with information on the performance testing of the device. 3. Installation Certification Form (DOH-347C): This form is used to provide the NYS DOH with information on the installation of the device. 4. Maintenance and Repair Certification Form (DOH-347D): This form is used to provide the NYS DOH with information on the maintenance and repair of the device. All of these forms must be completed and submitted to the NYS DOH for approval of the backflow prevention device.
New York Application for Approval of Backflow Prevention Devices (DOH 347)
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How to fill out New York Application For Approval Of Backflow Prevention Devices (DOH 347)?
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FAQ
How much does a backwater valve cost? The cost of backwater valve installation depends on your home. Installing the device in a new home will cost up to $250. However, retrofitting a backwater valve could easily cost $1,000 or more.
To reduce the risk of contamination, a backflow preventer can be fitted. A backflow preventer is also important when potentially toxic chemicals are used, for instance for commercial/industrial descaling of boilers, or when chemical bleaches are used for residential power washing.
Backflow prevention devices are an important component of our drinking water protection program and are legally mandated under the New York State Sanitary Code and the Rules of the City of New York for those businesses identified as posing a risk to the public water supply.
If you aren't sure, take a look around your basement ? backwater valves are usually located in the floor and have a cover that can easily be removed for maintenance. The cover itself is likely round, but there may also be a rectangular panel on top. If you have a sump pump, the backwater valve is likely close by.
Backflow prevention devices make sure no water flows back along the desired flow direction, ensuring that any chemicals, toxins, or debris won't make their way back into a clean water supply.
What is a Backflow Preventer & How Does it Work? - YouTube YouTube Start of suggested clip End of suggested clip The check valves are normally closed. Until there's low going through the device. Now if there's anMoreThe check valves are normally closed. Until there's low going through the device. Now if there's an issue with the valve.
Check valves use a hinged plug that allows water to pass through the pipeline but blocks it from coming back. Backflow preventers, on the other hand, apply an increased amount of pressure on a pipe to ensure the water can only flow one way.
Plumbing codes require all water outlets to be equipped with a backflow prevention device to prevent contamination or pollution of the drinking water. Therefore, all sinks have a space between the end of the faucet and the flood level of the sink called an air gap.