Blue Diamond Envir-o® ET Series Air Pumps - Wholesale Skid Lots

Blue Diamond


This listing for full skids for resale only. Must have business license on file with us to purchase.

Blue Diamond ET Series Air Pumps are versatile pumps that can be used in aquariums, ponds and certain septic applications. The weatherproof pump has a robust and compact construction, and the main body is constructed of cast aluminum alloy.

  • Energy-efficient Green Drive Technology for low power consumption
  • Suitable for intermittent and continuous duty applications
  • Replacing diaphragm simplifies effective maintenance 
  • Specially formulated diaphragm material for extended life
  • Made in in China
  • UL and CE approved

Each pump includes a slip fitting and an optional barb adapter in specified sizes. A 3/4" rubber elbow is also included. On all models where the brass is used to connect to a septic pump alarm, the brass is 4mm.  

2 Year Warranty
This warranty does not include the diaphragm kits, which are a replaceable, wearable part (typically replaced every 12-18 months). Warranties are at the discretion of the manufacturer as to whether the damage is due to misuse or to defect.

The most common problem with this and other larger air pumps is premature diaphragm tearing due to excessive back pressure. People don't tend to understand how much air the large sized pumps produce. If an air pump is powering too small of a diffuser or too few outlets, excessive back-pressure can occur. The solution is to add a tee with a ball valve or other "bleeder valve" so that excessive air can be bled off into the atmosphere. Start with the valve completely open and slowly close it until you have the maximum output from your air diffusers without unnecessary back pressure

Model Startup Power Performance Outlet Noise Weight Dimensions
ET40 55W 30W 40Lpm @ 0.15 bar 14mm (0.55") Slip;
10mm (0.39") Barb
40dB 4.3kg 8.7" x 6.1" x 7.5"

Note: The Blue Diamond ET series aerators are designed for relatively shallow water. The ET Series pumps have a maximum pressure threshold of 0.25 bar which is approximately 8' of water depth. Therefore they should probably only be used in water up to 7' deep.

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