Chemical Resistant Water Pumps

The difference comes down to materials.

Standard pumps typically use cast iron and basic seals, which can corrode quickly. Chemical resistant pumps are built using:

• 316 stainless steel for improved resistance to salt and chlorides
  
• Thermoplastic or composite bodies that won’t rust or degrade
  
• Viton or EPDM seals selected for chemical compatibility
  
• Silicon carbide mechanical seals for longer life in harsh liquids
  

These materials don’t make a pump indestructible, but they significantly improve durability when used in the right conditions.

Submersible, Surface or Engine-Driven?

Choosing the right type depends on how and where the pump will be used:

Submersible Pumps

Designed to sit directly in the liquid. Ideal for tanks, sumps, bilges and flooded areas.

Typical uses:

• Tanks, sumps and chambers
  
• Boats, bilges and marine use
  
• Industrial and agricultural settings

Surface Pumps

Installed outside the liquid and draw it through a suction hose.

Typical uses:

• Transferring liquids between tanks, IBCs or containers
  
• Irrigation and washdown
  
• Situations where the pump needs to remain accessible
  

Engine-Driven Pumps

Used where no mains power is available.

Typical uses:

• Remote locations and agriculture
  
• Coastal or marine environments
  
• Emergency response and high-flow transfer
  

Typically constructed from corrosion-resistant materials such as glass-reinforced components and stainless steel fasteners, making them suitable for salt water and light chemical use. Must be operated outdoors.

Choosing the Right Pump

To narrow it down quickly:

• What are you pumping? (salt water, detergent, light chemical)
  
• Is power available? (electric or engine-driven)
  
• Where will it sit? (in the liquid or beside it)
  
• What flow do you need? (litres per minute at your required head)
  

If your application is unusual or more demanding, it’s worth checking compatibility before purchase.