Antioch, CA óA three million-gallon water tank in the city of Antioch, CA has a single protrusion that acts as a common inlet and outlet for the city's water distribution system. "Water outside the inlet/outlet area became stagnant and developed bacteria," says Jon Billeci, plant superintendent.
Billeci solved his community's problem by selecting Tideflex check valves from The Red Valve Co. (Pittsburg, PA) for use in the city's water storage reservoir. When installed in the tank, the valve improves overall circulation and eliminates stagnation.
The water distribution system uses two sets of Tideflex valves and a simple piping manifold. The first set of valves discharge during filling. The second set discharge during draining. Both sets are positioned on the manifold, thereby maximizing the distance between the inlet and outlet, eliminating short-circuiting and improving water circulation. The valves were installed using the single protrusion that already existed, so Billeci avoided costly excavation of the tank required with other types of valve retrofits.
"I was a little skeptical at first," says Billeci. However, he now believes that installing the check valves were a good idea. "They solved the problem associated with a common inlet/outlet without having to do any excavation," he says.
The valves' applications also include reservoirs, standpipes, and tanks of all shapes and capacities. They also never freeze or stick open due to entrapped debris.