SEAFLO Series 21 Diaphragm Water Pump 3.8 L/M
SEAFLO Series 21 Diaphragm Water Pump 3.8 L/M

SEAFLO Series 21 Diaphragm Water Pump 3.8 L/M

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This Seaflo water pump excels in providing high flow, moderate pressure and is suitable for liquid transfer, spraying, circulation, filtration and dispensing. The twin chambers provide 3.8 litres of water every minute, and the unit is self priming and can run dry without damage. The built in pressure switch maximises efficiency, allowing the unit to sync with faucet use.


  • Compact design
  • Heavy duty demand switch
  • Quiet operation
  • Run dry capable
  • Low amp draw
  • Industry mounting pattern
  • Thermal protection


  • 43°c temperature max
  • 1.2m (4ft) suction lift
  • 35PSI (2.4 bar)
  • 3/8" hose barb Inlet/Outlet ports
  • 1/2" angled hose barb Inlet/Outlet ports
  • Intermittent Duty
  • 18AWG, 0.35m (1.1ft) long leads with 2-pin connector
  • 12v
  • Maximum 4.0amp draw

After ordering online, you will receive an automated email confirmation containing your order details. Your order will then be confirmed within a few minutes of placing your order.

It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example, chain may come by road, some electronic equipment by air.

Most orders are shipped within 2 - 5 Days

Shipping rates

Orders delivered to Australian Post Codes attract an $18.00 Flat Rate Shipping Charge* This excludes Bulky or Dangerous Goods

For Bulky Goods, Dangerous Goods and Remote areas.

If the cost to send is vastly different to our standard delivery costs, someone from our team will contact you prior to dispatch to arrange further payment or to issue a refund if you are not happy with the additional charges.

International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

Should you have any queries or concerns about shipping, please don't hesitate to get in touch by clicking the support button on bottom right of the page.

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