Cast Iron Centrifugal Pumps

Corrosion resistance:
A gradual increase in temperature makes the liquid turn more corrosive. Cast iron has relatively fair resistance to corrosion. Therefore, cast iron is preferred for pumps employed in high-temperature applications.

Maximum temperature limit:
When there is a sudden fluctuation in temperature, the metal is likely to experience thermal shock. This could happen under situations like pouring hot oil into a cold pump for start-up or spraying cold water on a hot pump during cleaning. Cast iron pumps function satisfactorily up to a temperature of 650 degrees Fahrenheit. They have considerably fair resistance to failure caused by thermal shock below this temperature. Heat-treated ductile iron withstands failure up to 800 degrees Fahrenheit.

Coefficient of thermal expansion:
Thermal expansion causes dimensional changes in the external parts of the pump, which may result in pump failure. Dimensional changes impact the running clearances and interference fits within the pump. Parts like the idler pins in the head, bushing in the casing, and rotor bearing sleeve will lose their interference and will be forced out of place, causing pump failure and an eruption of hot liquid in the area. The coefficient of thermal expansion of cast iron is only 6.5, which is comparatively low compared to that of steel and ductile iron with a coefficient of 7.0. This makes it ideal for pump manufacturing.

The applications of centrifugal pumps include:

• Centrifugal pumps are utilized in many buildings to pump the water supply.
• They are used as boosters and for domestic water supplies.
• Centrifugal pumps are designed in such a way that makes them useful for pumping slurries and sewage.
• These pumps are also used in fire protection systems and for cooling and heating applications.
• In the beverage industry, they are used to transfer bottled water, juice, and other beverages.
• In the dairy industry, centrifugal pumps are used to transfer dairy products, for example, buttermilk, milk, and flavored milk.
• Many industries (manufacturing, industrial, chemicals, food production, pharmaceutical, and aerospace) use the pumps for purposes such as refrigeration and cryogenics.
• In the oil and energy sector, they pump crude oil, mud, and slurry used by power generation plants and refineries.
• They can be used as metering pumps that can pump precise volumes of liquid for treating water, for example, wastewater, drinking water, swimming pool water, and boiler water.
• They are also used in process applications where metering of fluids is needed, extreme high pressures are required, or where the sealless nature of the pump type is beneficial.
• In the pharma and cosmetics industry, they are used to transfer lactose, glucose, and some other drugs and personal care products of medium viscosity.
• Circulator pumps are used for ventilation, heating, and air conditioning.
• Magnetic drive pumps are used where chemicals and hydrocarbons are present, and no leakage is permitted.
• Cryogenic centrifugal pumps are used for liquid natural gas and coolants.

Q: Are you a manufacturer or a trading company?
A: We are a manufacturer.

Q: Can I get samples?
A: Yes, we can provide samples. If you return the samples upon placing a mass order, we will refund the sample fee.

Q: What is your MOQ?
A: We can accept small quantities.

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