Available in a wide range of sizes and costs, NRV valves are generally small, simple and inexpensive. They also protect pumps and compressor equipment from damage caused by backflow and reverse flow. They reduce downtime and loss of production due to the failure of unsuitable valves. They increase energy savings, thanks to lowpressure drop, and are very effective in preventing water hammer. Add in the fact that NRVs reduce the possibility of sudden valve failure, and lower maintenance costs due to fewer moving parts, and you can see why they are an excellent choice for water, wastewater and pumping applications.