Some of the most difficult fluids to pump are slurries. They are frequently very abrasive, thick, and filled with solids. Plugging frequently occurs when using slurry applications. Naturally, it is not advised to design valves with areas where slurry can settle out and solidify. Slurry’s abrasive solids also grind against system components, wearing out internal parts and preventing valves from maintaining tight seals.
However, downtime and maintenance costs can be reduced by simply being aware of the characteristics to look for in slurry valves. Here are the six criteria our valve team advises you to consider when choosing slurry valves.
Replaceable and robust valve seats
Seats serve two purposes: they safeguard the metal parts of the valve and maintain a tight seal to stop leaks. Natural rubber is a good option for seat material because it typically resists abrasive slurries the best.
Look for valves that have replaceable seats as well. Quickly replacing a seat is essential in abrasive applications like slurry to reduce downtime and maintenance costs.
pipeline fully opened
With a full pipeline opening, also known as a full port, you can reduce the amount of time the valve is exposed to the slurry.
Effective Shut-Off
Chemicals and fertilizer slurries are bad for the environment and workers. Therefore, the slurry valve chosen must have good shut-off characteristics.
Positive shut-off describes a valve’s steam-driven disc against seat operation. A positive shut-off valve needs to be physically turned to open and close, unlike a diaphragm valve, which can leak if there is a loss in air pressure or melt in a fire.
Good Materials
Slurries are frequently highly corrosive and abrasive, so choosing the proper building materials is crucial.
Typically, we advise coating the components in a hard-facing substance like Stellite. Cobalt-chromium alloys are used to make Stellite. High wear resistance qualities are present in this material.
Ratings for High Pressure and Temperature
Before choosing the valve, be aware of the characteristics of the slurry. Some slurries must be transported over long distances under high pressure and heat. The types of materials and elastomers that should be used in your process will depend on the pressure and temperature of the slurry.
Self-Draining
Slurries occasionally need to be flushed out of the system. The self-draining feature, which reduces maintenance downtime, is probably a favorite of operators.
Every piece of machinery involved in the process finds slurry challenging to work with. By making the right choices up front, you can reduce the effects of corrosion and abrasion. Speak with a valve engineer who is experienced with applications like yours if you want to get the most out of your investment.
Conclusion
Slurry Valves can be a great way to increase the efficiency and accuracy of your home water system. By using them correctly, you can ensure that your water is heated evenly and efficiently. Additionally, by using Slurry Valves in your home, you can improve your family’s overall quality of water service.
