Chemical Pump

AOBL acid resistant pumps can handle a variety of liquids and are ideal for chemical transfer, many suitable for continuous duty and high flow applications. They are available in a variety of horsepower sizes, inlet/outlet sizes, seal materials, and wet materials. Some corrosion resistant pumps have pump housings with seal flushing ports to eliminate contamination of seals and seat elastomers. Pedestal models feature a motor mounted on top of a riser, while the close coupled pump is designed for easy installation and maintenance.

We have a range of mechanically sealed chemical pumps, as well as our new range of magnetically driven (magnetic drive) acid pumps designed to be efficient, yet economically priced with consideration.

All wet parts of the pump, such as the impeller, are made of advanced plastics and thermoplastics for maximum corrosion resistance. Pumps are internally lined with plastic as well as superior chemical resistance characteristics.

Acid Resistant pumps are ideal to pump, re-circulate and to mix liquids in industries such as:

  • Electroplating
  • Pharmaceuticals
  • Dyes and pigments
  • Steel pickling
  • Mining and steel processing
  • Transfer of corrosive liquids
  • Unloading from tank to tank
  • Unloading trucks
  • Unloading railcars
  • Metal plating

Acid Resistant Pumps for Industrial Purposes

Types of chemicals that can be pumped by our pumps includes but is not limited to the following:

  • Sulfuric acid pumps
  • Nitric acid pumps
  • Hydrofluoric acid pumps
  • Solvent pumps
  • Sodium hypochlorite pumps
  • Sodium hydroxide pumps
  • Demineralization pumping
  • Hydrogen peroxide pumps
  • Ammonia pump
  • Chemical cleaning pumps
  • Plating tank pumps
  • Acid solution pumping
  • Alkaline degreasing bath pumping
  • Chemical reagent injection
  • Chlorine pumping
  • Acid-base mixing pumping
  • Electroplating bath pumping (chrome plating, etc.)
  • Photochemical liquid pumping
  • Acid washing tank pumping
  • Hydrochloric acid pumps


Acid pumps are classified by function: self-priming acid pump, magnetic drive pump, and vertical acid pump. Resistance to acid and alkali pump is a kind of special material pump, suitable for – 20 ℃ ~ + 120 ℃ temperature under the conditions of transportation of all kinds of corrosive medium, the over-current parts are all made of plastic alloy (ptfe and fep, and other materials) with reasonable formula, mold, processing and become, acid proof pump with the advantages of a variety of plastic, has a strong corrosion performance, and has the advantages of high mechanical strength, no aging, no toxin decomposition, is the ideal equipment for conveying all kinds of strong and weak acid.

The suction line and pump must be filled with liquid before starting the chemical pump. After the pump is opened, the impeller rotates at a high speed, and the liquid rotates with the blade. Under the action of centrifugal force, it flies off the impeller and ejects outward. The speed of liquid injection in the diffusion chamber of the pump shell gradually slows down and the pressure gradually increases. Water outlet, water outlet pipe. At this point, at the center of the blade, the liquid is thrown around so that there is neither air nor liquid forming a vacuum low-pressure area. The liquid in the liquid pool flows into the pump through the suction pipe under the action of atmospheric pressure on the pool surface. It is continuously sucked out of the reservoir and continuously discharged from the discharge line.

1, the first confirmed good conveying liquid must choose the material of chemical pump and seal material, or due to the pump body or sealing material could not bear corrosion of liquid, will cause a delay of chemical production and unnecessary economic losses, so in the selection process for the chemical pump users must inform the delivery name, medium temperature and medium to choose the appropriate chemical pump.

2, followed by the need for chemical pump flow and head, head must be confirmed, in the selection of chemical pump procurement personnel had better understand the height of the chemical pump, distance, elbow valve number and accurate inform chemical pump manufacturers.

3, it is important to note, finally must confirm a good chemical pump transmission medium density, viscosity, and particle impurities, if the weight is too much based on the original chemical pump motor selection more motor power, viscosity is too large to consider choosing low rotating speed of the chemical pump products or choose air driven products.

  1. Check whether the pump and pipeline and joint are loose. Turn the pump by hand and see if it is flexible.
  2. Add bearing lubricating oil to the bearing body, observe the oil level should be at the center line of the oil mark, and the lubricating oil should be replaced or supplemented in time.
  3. Unscrew the water diversion plug of the pump body and fill the water diversion (or slurry).
  4. Close the gate valve, outlet pressure gauge, and inlet vacuum gauge of the water outlet pipe.
  5. Point the motor and check whether the motor turns correctly.
  6. Start the motor. When the pump is in normal operation, open the outlet pressure gauge and the inlet vacuum pump.
  7. Try to control the flow and head of the pump within the range indicated on the sign, to ensure that the pump operates at the highest efficiency point, to obtain the maximum energy saving effect.
  8. During the operation of the pump, the bearing temperature shall not exceed 35D of the ambient temperature, and the highest temperature shall not exceed 80D
  9. If any abnormal sound is found, stop the pump immediately and check the reason.
  10. pump to stop using, first close the gate valve, pressure gauge, and then stop the motor.
  11. pumps in the first month of work, after 100 hours to replace the lubricating oil, after every 500 hours, oil change once.
  12. Adjust the packing gland frequently to ensure the normal dripping in the packing room (it is advisable to drip)
  13. Check the wear of the shaft sleeve regularly and replace it in time after the wear is large.
  14. When the pump is used in the winter season, after parking, it is necessary to unscrew the water plug at the lower part of the pump body to prevent freezing and cracking.
  15. If the pump is not used for a long time, it is necessary to disassemble the pump, dry the water, and put the rotating part and the joint with grease, and keep it properly.

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About HAOSH Pump

HAOSH‘ is a major dosing metering pump brand of Shanghai GL Environmental Technology Co., Ltd. Also as a pump category super market, we supply diaphragm pumps, chemical pumps, water pumps, screw pumps, etc. Since founded in 2007, HAOSH brand has for more than 100 countries of the world’s more than 3000 clients with high quality pumps.