Wednesday, 29 June 2016

How does a Focus Chemical Metering Pump Work Process for Water Treatment Equipments?

The Focus diaphragm type chemical dosing systems are positive displacement chemical pumps that allow the operator to adjust the displacement of the pump which changes the output rate. Focus pumps are lost motion type pumps which use a piston to mechanically move a rubber diaphragm that is the barrier separating the liquid from the inner workings of the pump. 

Chemical Dosing Systems for RO Water
Chemical Dosing Pump Systems for RO Water
An electric motor drives a worm gear speed reducer that in turn turns a shaft with an eccentric installed on the shaft. As the eccentric moves forward the piston is pushed forward, along with the diaphragm, and the liquid that is in the wetted end of the pump is pushed out through the discharge check valve and into the piping going to the industrial process. As the eccentric continues to rotate through a 360 degree cycle it will eventually push the piston rod rearward, which pulls the diaphragm rearward. That rearward action creates a vacuum in the wetted end of the pump resulting in the chemical liquid being sucked into the wetted end through the suction side check valve. Focus Engineerrs are leading metering and dosing pump manufacturer in india.


Many people choose to filter or test the drinking water that comes out of their tap or from their private well for a variety of reasons. And whether at home, at work or while traveling.

Lead can enter drinking water when service pipes that contain lead corrode, especially where the water has high acidity or low mineral content that corrodes pipes and fixtures. The most common problem is with brass or chrome-plated brass faucets and fixtures with lead solder, from which significant amounts of lead can enter into the water, especially hot water.

Homes built before 1986 are more likely to have lead pipes, fixtures and solder. The Safe Drinking Water Act (SDWA) has reduced the maximum allowable lead content -- that is, content that is considered "lead-free" -- to be a weighted average of 0.25 percent calculated across the wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures and 0.2 percent for solder and flux.

Corrosion is a dissolving or wearing away of metal caused by a chemical reaction between water and your plumbing. A number of factors are involved in the extent to which lead enters the water, including:

the chemistry of the water (acidity and alkalinity) and the types and amounts of minerals in the water,
the amount of lead it comes into contact with,
the temperature of the water,
the amount of wear in the pipes,
how long the water stays in pipes and
the presence of protective scales or coatings inside the plumbing materials.

Is there a safe level of lead in drinking water? 

The Safe Drinking Water Act requires EPA to determine the level of contaminants in drinking water at which no adverse health effects are likely to occur with an adequate margin of safety. These non-enforceable health goals, based solely on possible health risks, are called maximum contaminant level goals (MCLGs). EPA has set the maximum contaminant level goal for lead in drinking water at zero because lead is a toxic metal that can be harmful to human health even at low exposure levels. Lead is persistent, and it can bio-accumulate in the body over time.

Water Treatment Equipments for Home
Water Treatment Equipments for Home
Young children, infants, and fetuses are particularly vulnerable to lead because the physical and behavioral effects of lead occur at lower exposure levels in children than in adults. A dose of lead that would have little effect on an adult can have a significant effect on a child. In children, low levels of exposure have been linked to damage to the central and peripheral nervous system, learning disabilities, shorter stature, impaired hearing, and impaired formation and function of blood cells.

Find out more about Drinking Water Treatment Equipments System for Home.

No comments:

Post a Comment