what is nrv in plumbing

What Is NRV in Plumbing?

Non-Return Valves (NRV) are used to restrict the flow of water into the sewer. They are typically installed in manholes. These are designed to stop foul water from flooding. They are easy to install and don’t require specialized equipment. NRVs also provide protection against rodent infestation due to their stainless steel reinforced flap. When installed properly, these valves prevent foul water from backing up and damaging the pipes. what is nrv in plumbing

Performance testing is essential to ensure that these fittings are leak-free. However, this testing does not address the durability of non-return functions, suitability for drinking water applications, and proper operation under strain. In addition, check valves must meet all of the requirements of the government. If you are concerned that your installation is not compliant with current plumbing regulations, don’t hesitate to contact a certified plumber or a plumber for help.

NRVs can be classified according to the type of flow control they offer. Non-return valves come in different types, but their main function is to prevent backflow. These types of valves can either be one-way or two-way, with one opening for flow out and another for flow in. While most non-return valves have two openings, they don’t need manual assistance to shut or open them.

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