Water Flow Management Device Enables City Water Meter to Measure and Bill for Water, not Air 

Executive Summary: This water flow management device will reduce your water bill - 5% guaranteed, 15% typical. In simple terms, the device, installed on your side of the city meter, contains an oscillator that influences the upstream flow such that you buy water and not air.  

All municipal water lines deliver large quantities of turbulent air bubbles mixed in with the water.  Water meters do not distinguish between water and the turbulent air -  meaning that the building owner/occupant pays for water they do not receive.  A patented valve technology solves that problem by making the water meter read more accurately. It thus provides the building owner an immediate reduction in their water bill expense.  

The unique valve is installed on the property owner’s side of and near the meter.  We guarantee a 5% reduction in your bill with 15% being more typical, provide a 10 year product warranty and generally see paybacks of about 18 months.  If you email us the last 12 months of bills, we will prepare a customized proposal for your review. Please email pdf's of your 12 bills to: tim@cbarc.net

While not a water conservation measure, our Accurate Water Valve is a cost savings measure because it transforms the flow of the air in the water into smaller bubbles, that now move in straight lines, so that the meter and your bill show more accurate and lower water readings.

The patented process is simple. With the valve is installed on the building side of the meter, its proprietary oscillation assembly converts turbulent flow to laminar flow thus increasing the accuracy of the meter readings as measured by single jet, multi-jet and turbine category positive displacement water meters.

Key Points

  • Typical Savings are between 12-20%
  • 5% Guaranteed Savings
  • 10 year Warranty
  • 18 months Average Payback
  • Used in over 2000 locations

Key Message

Buy Water, not Air!

Laminar vs. Turbulent Flow

Laminar and turbulent flows are the two major forms of fluid flow. Laminar flow is an orderly flow with all the fluid molecules moving in parallel to the direction of the primary flow. In a turbulent flow, the water contains eddies and unpredictable currents moving in various different directions other than the overall direction of flow.  This product converts turbulent flow to a laminar flow.

For more information, please call Tim Crockett at 713-530-7922

To receive a customized proposal, please send 12 months of water bills to tim@pacehouston.com

Water Valve Technology Explained

The Flow Management Device (FMD) is designed with three main functions to help clients reduce water consumption that is metered entering your facility.

1. The FMD manages the flow from turbulent to laminar flow in the water line
2. The FMD manages the size of any air (pockets, eddies, bubbles) in the water line
3. The FMD manages the flow efficiency and flow rate traveling through the water line
Turbulent Flow to Laminar Flow

Throughout the water distribution system there are many factors than produce turbulence in the line. From the pumping and lift station pumps, elevation changes, every tee, elbow, gate valve and pipe size transition there is opportunity for turbulence to be produced. With the oscillation of the valve piston at a given frequency we are increasing the effect and efficiency of the boundary layer in the pipe thus allowing the Reynolds number to be reduced and providing a turbulent/laminar transition zone prior to entering the water meter. This is further amplified through the utilization of Venturis’ principal being designed into the entry and exit of the flow through the FMD further providing linear stability.

Where does the air go?

Air enters into the municipal distribution lines in a number of ways. Construction, repairs, elevation changes, cavitation….this air is delivered over a flow meter that registers both the air and water with no way to differentiate, thus inflating the reading of actual water used. The installation of the FMD takes these volumes of air entrained in the line and renders them unreadable by reducing the size of the pass through volume of air and dissipating into many smaller unreadable volumes. The air remains in the line. It still passes over the meter, but in a state that is undetectable by every water meter currently used by municipalities in residential, commercial and industrial applications.

Managing Flow Efficiency

The orifice diameter for the plunger head is sized based on providing the most efficient flow for the installed location. The standard orifice size associated with each FMD size provides an actual water usage reduction. For facilities that require specific gallons per minute the FMD is custom manufactured to specific specifications.

General Overview of the FMD Operation

1. The FMD works by combining the effects of the three design principles via Oscillation and Hydraulic Intensification.
2. The FMD is installed with the plunger facing into the flow of water. The water flow is what powers the oscillation of the spring loaded plunger. The plunger arm then oscillates approximately 300 to 500 per minute creating the Transitional Zone 30 to 60 feet in front of the water meter “city side”.
3. The FMD is installed as close the water meter as possible on the customer side of the meter. We discourage installing any further than 10ft from the water meter (although we have a few successful installs beyond 10ft.). [Please note] 2” and smaller FMD’s are installed in-line and 3” and large have slip flanges and installed inside the pipe.

The Technology Behind the Savings

The FMD is a self-perpetuated device that is activated by the pressure of the incoming water in the line. The FMD has a plunger head that oscillates between 300-500 times a minute, resulting in a hydraulic intensification upstream of the device. The result of hydraulic intensification lowers the Reynolds number found in the water line, creating a more laminar flow thru the meter.

The Reynolds number is calculated from the following characteristics; the hydraulic diameter of the pipe, volumetric flow rate (m3/s), pipe cross-sectional area (m²), mean velocity of the fluid (SI units: m/s), dynamic viscosity of the fluid (Pa·s = N·s/m² = kg/(m·s)), kinematic viscosity (m²/s), and density of the fluid (kg/m³). This hydraulic intensification creates a compression zone upstream of the meter reducing air pockets, eddies, or swirls that passes thru the meter resulting in higher consumption reading.

The spring which controls the oscillating plunger head is engineered specifically to the pipe configuration and water pressure of each specific location. The spring which is made of surgical stainless steel (316) is designed with several crack points to accommodate fluctuating water pressure. The angle of the holes cut into the stainless steel back plate as well as the angle of the plunger head and inlet opening creates a venturi effect across the FMD. This venturi effect allows for a nominal pressure loss (1-3lbs) to the customer. The FMD is designed in a manner that if it were to fail, it would do so in the open position causing no disruption to the customer.
— Manufacturer's Engineers

[The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe.  The Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities. As viscosity increases it progressively inhibits turbulence, as more kinetic energy is absorbed by a more viscous fluid. The Reynolds number quantifies the relative importance of these two types of forces (inertial vs. viscous) for given flow conditions, and is a guide to when turbulent flow will occur in a particular situation. Understanding these relationships enables our clients to save money on their water purchases.]

This ability to predict the onset of turbulent flow is an important design tool for equipment such as piping.

Water Valve Case Studies - Reduce Billable Consumption

While the valve is installed in 2000 applications, the following nine case studies, in addition to the San Francisco Airport, show water consumption savings ranging from 6% to 43% in a variety of applications including: Community Colleges, Apartment Buildings, Mobile Home Park and a Data Center. Basically, if you buy water we can make sure you are buying more water and less air, meaning you get billed for less water.

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 1 - Community College Reduces Average Daily Water Billable Consumption by 26%

Installation Video

Case Study 1 - Community College Reduces Average Daily Water Billable Consumption by 26%

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 2 - Community Park experiences 8% decrease in billable water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 3 - Sea Horse Mobile Home Park Experiences 25% decrease in billable average daily water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 4 - Atlanta Steakhouse Restaurant experiences a 17.9% decrease in billable average daily water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 5 - Retail Center realizes an initial 16% savings followed by a YOY savings of 43% in billable water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 6 - G&K Services experiences 14% reduction in YOY billable average daily water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 7 - Industrial Insulation Manufacturer experiences 9% decrease in billable water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 8 - Apartment building experiences 15% decrease in billable water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com

Case Study 9 - California Data Center experiences 6% decrease in billable water consumption

Call Tim Crockett  at PACE Houston for more information 713-530-7922 or email us at tim@pacehouston.com