Blue Diamond Envir-o® ET Series Air Pumps
Blue Diamond Envir-o® ET Series Air Pumps
Performance ChartComparative ChartExample: Blue Diamond ET80 with SC-2-5/8 Matala ManifoldET30 ModelET40 ModelET60 ModelET80 ModelET100 ModelET120 ModelET150 ModelThree Prong Plug which works with any standard USA three prong receptacle
Click to enlarge image(s)

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.

  • Green Drive Technology – Energy efficient motors with low power consumption
  • Suitable for intermittent and continuous duty applications
  • Simple, Effective Maintenance – Replacing diaphragm returns pump to full performance
  • Specially formulated diaphragm material for extended life
  • Pumps made in in China
  • UL and CE approved.  Works with standard household electrical receptacles in the USA.  
Connections
Ther are two differenet size connections on each model.   

The ET30 and ET40 
 each have a plain horizontal 14.0mm (0.55") O.D. outlet connection fits tight on a 1/2" I.D. tubing or loosly with a 5/8" tubing. A rubber elbow is also included.   Each pump also comes with barbed fitting that threads into the threaded interior of outlet to provide a 10.0mm (0.39") O.D. barb which fits well in 3/8" I.D. tubing.

The ET60, ET80, ET100 and ET120 each have a plain horizontal 18.0mm (0.71") O.D. outlet connection fits very tightly on 5/8" I.D. tubing or loosly in 3/4" I.D. tubing. A 3/4" rubber elbow is also included.   Each pump also comes with barbed fitting that threads into the threaded interior of outlet to provide a 12.0mm (0.47") O.D. barb which fits well in 1/2" I.D. tubing.    

The ET50 and ET200 
 each have only a plain horizontal 18.0mm (0.71") O.D. outlet connection fits 3/4" I.D. tubing. 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 or about 1/32nd.  

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.

PGP Tip
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 Operating Power Standard Performance Connections Noise Weight Dimensions (Inches)
ET30 30W 25W @ 0.14 bar 30Lpm (1.06cfm) @ 0.15 bar 14mm Slip; 10mm Barb 40dB 4.0kg 8.18L x 5.9W x 7.0H
ET40 55W 30W @ 0.14 bar 40Lpm (1.41cfm) @ 0.15 bar 14mm Slip; 10mm Barb 40dB 4.3kg 8.66L x 6.10W x 7.48H
ET60 85W 55W @ 0.14 bar 60Lpm (2.12cfm) @ 0.17 bar 18mm Slip; 12mm Barb 45dB 6.0kg 7.99L x 6.49W x 6.02H
ET80 105W 75W @ 0.14 bar 80Lpm (2.83cfm) @ 0.1 bar 18mm Slip; 12mm Barb 45dB 7.0kg 8.26L x 7.28W x 6.73H
ET100 125W 80W @ 0.14 bar 100Lpm (3.53cfm) @ 0.1 bar 18mm Slip; 12mm Barb 45dB 8.5kg 9.37L x 7.71W x 6.96H
ET120 90W 90W @ 0.14 bar 120Lpm (4.24cfm) @ 0.1 bar 18mm Slip; 12mm Barb 45dB 9.5kg 10.43L x 8.36W x 7.79H
ET150 150W 150W @ 0.14 bar 150Lpm (5.3cfm) @ 0.15 bar 18mm Slip; 12mm Barb 45dB 9.0kg 10.07L x 7.87W x 8.74H
ET200 220W 220W @ 0.14 bar 200Lpm (7.06cfm) @ 0.15 bar 18mm Slip; 12mm Barb 46dB 9.0kg 10.07L x 7.87W x 8.74H

Important 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 approx 8 foot of water depth.  Therefore they should probably only be used in water up to 7' deep.   
Specifications
Power Cord Grounded 18 Gauge, 5' 3" Long
Warranty 2 Years