Acid Pump Types

Imagine using a toaster to make soup. Similar results occur if the wrong type of pump is used to transfer acidic solutions. Acids are typically highly corrosive substances that can be dangerously reactive when exposed to certain other elements or conditions. Due to these risks, it is critical to choose the appropriate materials and design when selecting a pump for acid applications.

Acid pumps are constructed of materials that can withstand exposure to acidic solutions. They are carefully designed to safely contain high-risk substances, to protect workers and the environment. These durable pumps can be found in multiple applications, transferring acids for chemical processing, plating, wastewater treatment, and a host of other industries. They are available in a variety of types to suit each of these distinct applications.

Types of Acid Pumps

The diversity of acid pump applications cannot be served by one type of pump. Four main styles of acid pumps meet the demands of the full range of acid transfer needs across various industries.

Sealed pumps

Operation: A motor-driven shaft is attached to the motor on one end and the impeller on the other. Where the shaft enters the pump's wet end, a mechanical seal prevents fluid from moving beyond the casing.

Benefits: These pumps are often ideal for applications that require the transfer of liquids that contain solids. They also typically offer a lower price point compared to sealless mag-drive pumps.

Applications: Common applications for a sealed acid pump include chemical processing, printed circuit boards, pharmaceutical, and wastewater treatment. .

Sealless Pumps

Operation: A sealless acid pump features powerful magnets that eliminate the need for a seal. The magnets are located on the impeller and on the outer drive magnet attached to the motor shaft. As the drive shaft rotates, it causes the impeller to rotate. As acids pass through the pump, they remain hermetically sealed within the housing.

Benefits: Because the pump has no seal, the seal can never leak. This also eliminates the need for replacement seals, which reduces the cost of parts and labor over the life of the pump.

Applications: Common applications include chemical processing, plating, electronics, pharmaceuticals, rail cars, biodiesel, mining, agriculture, and wastewater.

Vertical Pumps

Operation: In vertical acid pump design, the impeller is mounted perpendicularly on a vertical rotating shaft. The motor turns the pump impeller, rotating the liquid. This creates pressure, which allows the liquid to be pumped vertically.

Benefits: The main benefit of a vertical acid pump is a smaller footprint. A vertical acid pump takes up less floor space for applications with limited surface area. Many vertical acid pumps are manufactured from corrosion resistant materials and are capable of having the pump body immersed in the liquid.

Applications: Common applications for a vertical acid pump include wastewater, pharmaceutical, and chemical transfers.

Drum pumps

Operation: A drum pump features a narrow tube that fits into the opening of a drum. A small motor is attached to the shaft. The pump transfers liquids from the drum to a receiving container.

Benefits: Drum pumps eliminate the need to tip or pour liquid from drums, which can pose hazards. Drum pumps also offer portability.

Applications: Common applications include water treatment chemicals, cleaners, plating solutions, kidney dialysis solutions, DEF, coolants, and solvents.

Finish Thompson’s Complete Line of Acid Pumps

Finish Thompson offers an acid pump for virtually every application. Durable designs include sealless, sealed, vertical, and drum pumps. Follow the links below to find the perfect pump for your application.

Sealless Acid Pumps

DB Series Sealless Chemical Pump

  • High efficiency
  • Rugged construction
  • Strongest neodymium magnets
  • Hours of run-dry capability
  • 5-year manufacturer’s warranty

Finish Thompson DB Series Mag Drive Pump

MSDB Series Sealless Chemical Pump

  • Based on the reliable DB series
  • Ideal for high-head, low flow applications
  • Over 300 feet (91 meters) of maximum head
  • Extended run-dry ability
  • 5-year manufacturer’s warranty

Finish Thompson MSDB Series Mag Drive Pump

SP Series Self-Priming Sealless Chemical Pump

  • Lightning-fast self-priming
  • No seals, so there are no leaks
  • Deep lift abilities
  • Corrosion-resistant
  • 5-year manufacturer’s warranty

Finish Thompson SP Series Mag Drive Pump

UC Series

  • Powerful neodymium magnets
  • EFTE lined housing and wetted components 
  • Leak-free Operation
  • ANSI dimensional
  • 2-year manufacturer’s warranty

Finish Thompson UC Series Mag Drive Pump

Sealed Acid Pumps

AC Series

  • Compact design
  • 316 stainless steel construction
  • Variety of seal combinations
  • FDA compliant materials
  • ATEX certified

Finish Thompson AC Series AC 5 Centrifugal Pump

GP Series

  • Plastic centrifugal pumps
  • Externally mounted seals
  • Non-metallic wetted components
  • Multiple seal types and material options

Finish Thompson GP Series GP11 model Mechanically Sealed Plastic Pump

Vertical Acid Pumps

AK Series

  • Cantilevered metallic centrifugal pumps
  • 316 Stainless steel construction
  • Compact design
  • Simple operation and handling
  • Economically priced

Finish Thompson AK Series GP11 model Mechanically Sealed Plastic Pump

AV Series

  • Metallic centrifugal pumps
  • Variety of port sizes and seal combinations
  • Compact design
  • Easy to operate and handle
  • Economically priced

Finish Thompson AV Series Sealed Acid Pump

VKC Series

  • Plastic mag-drive pumps
  • Virtually eliminates foaming, aeration, & microbubbles
  • Molded components
  • O-ring protection reduces maintenance
  • Inside or outside mount

Finish Thompson VKC Series Sealed Acid Pump

MSVKC Series

  • Multi-stage centrifugal pumps
  • Increased head at low flow rates
  • Low power consumption
  • Mix and match impeller sizes
  • Interconnecting drive shaft

Finish Thompson MSVKC Series Sealed Acid Pump

Drum Pumps

PF Series

  • High performance design and materials
  • Sealless electric barrel pump design
  • Handles fluids up to 2000 cP
  • Unique double suction impeller for high flow and high head
  • FDA-compliant options
Finish Thompson PF Series Pump

SF Series

  • High performance, sealless design
  • Dual impeller option provides high flow or high head
  • Handles fluids up to 1200 cP
  • 40 mm (1.6”) diameter tube for smaller bung openings
  • Integral strainer on high-flow versions
Finish Thompson SF Series Pump

EF Series

  • Sealless design
  • Lightweight and economical
  • Ideal powered replacement for hand-operated pumps
  • Integral strainer
  • An affordable choice for light-duty transfer
Finish Thompson EF Chemical Drum Pump

HVDP Series

  • Multiple material and seal option
  • High viscosity, high head design
  • Handles up to 100,000 cP
  • Camlock feature for quick disassembly
  • Optional foot design for drums with liners
Finish Thompson HVDP Electric Drum Pump

TT Series

  • Sealed design
  • 316 stainless steel or CPVC tube materials
  • Tubes interchangeable with motors
  • Up to 2000 cP with M6X air motor
  • FDA-compliant STTS option
Finish Thompson TT Series Pump

BT Series

  • High viscosity design
  • Screw-type lifting compressors
  • Up to 15,000 cP
  • Stainless steel tube construction
  • Sealed design
Finish Thompson BT Electric Drum Pump

TB Series

  • Lightweight and economical
  • Up to 200 cP
  • Interchangeable with motors
  • Compatible with smaller bung openings
  • Variable orifice discharge for greater flow control
Finish Thompson HVDP Electric Drum Pump

About Finish Thompson

Finish Thompson Inc. designs and manufactures pumps to safely transfer a wide variety of corrosive liquids. Products include centrifugal sealless magnetic drive pumps with run-dry capability, mechanically sealed pumps, drum and barrel pumps, vertical mag-drive pumps, multi-stage pumps, and the FTI Air line of air operated double diaphragm (AODD) pumps. For durable solutions for your applications, contact Finish Thompson Inc.