How Smart Valve Works
The Smart Valve air compression benefit works on all single jet, multi jet, and turbine category positive displacement meters. These make up over 99% of all water meters in use.
The science is based upon Boyle’s Law regarding gas pressure and volume and Le Chatelier’s Principal of volumetric dynamics. The Smart Valve is installed in your water line on your side of the meter as close to the meter as possible. The variable spring loaded plunger maintains a constant pressure on the oncoming water supply. This ‘backpressure’ manifests itself into a high pressure point on the other side of the water meter. When air reaches this pressure point, the air becomes compressed and no longer maintains its volume. It passes by the water meter in this compressed state until after it passes through the Smart Valve and soon returns to its original uncompressed state. The Smart Valve does NOT remove the air, it just compresses it so the water meter can’t measure it.
A common example of entrained gasses is shaking up a soda bottle. The Smart Valve is like the bottle cap keeping the system pressurized. The gasses are in there but you can’t see them until you remove the cap, and neither can your water meter. You won’t notice any difference in the water coming into your facility, but you will notice that your water meter is now spinning less.
Pressure And Flow Stabilization
Other ways in which water meters can be inaccurate are during very high, low flow or pressure surges. Water meters are designed to be accurate within a specific flow range. If the flow exceeds this range it can ‘over-spin’ causing your readings to be inflated. An example is when your water is off then something is opened, this creates an initial surge then a pressure drop. These surges and drops can also be caused by variability in the municipal water supply.
The Smart Valve proprietary spring loaded technology acts as a ‘shock absorber’, eliminating these peaks and valleys and creating a smooth, even flow that keeps your meter readings accurate and protects against damage that can occur from a surge.
Any time you insert anything into a water line it will act as a flow restrictor to some extent. The Smart Valve creates a minimal amount of flow restriction that will save the user additional money in non-volumetric water uses such as showers, sinks, hoses and the like. This can also be used to convert an entire facility to a water conservation low-flow profile without the need to install individual flow regulators or replace older fixtures.
Furthermore, almost all water devices are designed for approximately 65 psi water supply. A higher psi can cause excessive water use and leakage at seals and gaskets that often goes undetected. In these cases a pressure reducer is typically used to maintain a 60-65 psi to the facility. Unfortunately these devices require maintenance and often fail. The Smart Valve acts as a pressure reducer in high-PSI water systems, eliminating the problems caused by excessive water pressure.
By virtue of its design the Smart Valve act as a secondary back flow preventer to protect the municipal water supply. This is becoming more and more important as municipalities seek to better protect our water reserves from contamination.