TOTAL VALVE SOLUTIONS
You probably know that Cape Town is running out of water. Reducing water loss is an important part of the strategy for postponing day zero. Water loss is a significant problem for water supply authorities everywhere. It’s worse here in Africa where skilled operators aren’t always available to manage and maintain complex electronic pressure and…
DetailsRecent research has shown that air pockets cause extensive damage and hindrance. They reduce flow capacity and cause energy and head loss. They promote corrosion. Hydrogen sulphide is a well-known cause of corrosion in wastewater pipelines. Most of the studies on the topic acknowledge the contribution of air pockets to the problem, but are silent…
DetailsA correctly-sized flow controller close to the pump discharge provides tamper-resistant protection for centrifugal pumps. Running at below their minimum operating head is a common cause of submersible centrifugal pump failure. (This is the same as allowing them to deliver too high a flow rate.) Flow rate and head should be kept within the manufacturers…
DetailsHousing complexes need pressure reducing valves for several reasons: Higher supply pressure (from municipalities and waterboards) to meet growing demands. Lower required pressures to homes to reduce any potential leaks. The solution is simple and inexpensive for traditional free-standing houses. A line size (40mm, 32mm) direct acting pressure reducing valve costs less than R1500. It’s…
DetailsAir vales have received a lot of attention because they play such a crucial role in pipelines. A brief summary of some of these developments follows: Standard air valve. Normally produced with a reduced bore to make the body smaller and thus less expensive. These valves are prone to close under high air velocity (pre-closure)…
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