Water treatment facilities must use the correct valves in their systems. As we need for maintenance because the reliability, efficiency, and safety of piping systems are ensured. This is true for all kinds of water purification, from controlling and managing polluted river or sea water to producing ultra-pure water for the pharmaceutical industry. Each valve serves a specific function and has a specific set of working conditions. Frequently used valves in the water treatment industry.
- Gate valves
- Butterfly valves
- Check valves
- Ball valves
- Knife gate valves
- Globe valves
- Shut-off valves
- Plug valves *Diaphragm valves
- They manage flow via a wedge-shaped gate in large-diameter pipes.
- Gate valves are full-stop.
- At the “on” position, the valve is totally open on the inside, allowing material to flow freely.
- A gate closure in the valve stops water flow when the valve is turned off.
- Gate valves should never be used to modify water flow pressure since they wear out quickly.
- High-pressure gate valves perform effectively.
- Manufacturing, pharmaceutical, gas and oil, automobile, and marine systems use them. Butterfly valves.
- Butterfly valves control water flow. The valve’s shaft holds a circular disc.
- The shaft turns the disc to close the valve.
- Wastewater systems use butterfly valves. Because they are lighter and smaller than other valves, they are cheaper at bigger sizes.
- Butterfly valves are cheap but ineffective in slurry applications.
- These valves are used to stop water from backing up in a pipeline.
- The purpose of check valves, commonly referred to as non-return valves, is to stop back flow in piping systems. By doing so, damage is avoided and the system is guaranteed to function properly.
- A check valve is opened by the forward-moving liquid’s pressure, and it is closed by any change in flow direction.
- In other words, a check valve permits complete, unhindered fluid flow in one direction and automatically closes as pressure is decreased or reversed.
- They are perfect for systems with continuous fluid flow and back flow prevention requirements. They are useless in fluid-pulsating systems.
- A circular closure element (the ball) is inserted into a seat inside a ball valve. This makes it possible to open or close the valve with just a quarter turn. It guarantees an even seal inside the valve.
- Ball valves are useful in ship pipe systems, within safety protection services, and among chlorine producers since they can endure high pressure, temperature, and velocity flows.
- They are not advised for use in pharmaceutical, bioprocessing, or food and beverage systems, nevertheless, because of their propensity for being difficult to clean.
Knife Gate valves
- Gate valves with a knife edge can cut through accumulated solids like scale, slurries, and surface buildups. Knife gate valves function similarly to gate valves.
- They perform well in high-flow systems and can handle sludge or abrasive slurries applications.
- It is not advised to use knife gate valves in low-pressure applications.
- They are not suitable for high-purity applications because they cannot offer cavity creation or bubble-tight cutoff.
- Globe valves often have a spherical shape, thus its name.
- They consist of two parts, each of which is divided by an internal baffle.
- A movable stopper, sometimes known as a disc, can be screwed into an orifice that serves as a seat to stop the flow.
- For use, the plug is attached to a stem that has a hand-wheel.
- Slurries cannot be handled by them, although they are effective for precision throttling in water treatment applications. Compared to other solutions, globe valves are often more expensive.
- Valves known as shutoff valves stop the flow within a piping system.
- All pumps and check valves in water treatment systems must include a shutdown valve that enables system isolation and lift station component repair.
- When the liquid contains grit, they are intended to avoid blockage.
- Plug valves function similarly to ball valves, however the device that regulates water flow in a plug valve is tapered rather than a ball.
- They are frequently utilized in systems that transport sludge, untreated sewage, and grit.
- Plug valves are dependable and long-lasting because they feature a tight shutdown and good sealing.
- They usually weigh a lot, though, which takes up more room in the piping system. Diaphragm Valve
- These valves are utilized to regulate the water flow in a pipeline.
- To regulate the flow, they contain a flexible diaphragm that may be raised or lowered.