Standard rotary vane compressors (Gast Mfg) work well and have a long life span when diffusers are operated at 15-16ft depths. I have some that have been operating pushing air to 15 ft deep for 17 yrs (1350hrs/yr) and still operating on the first set of vanes 22,950hrs!. Vanes have a normal rated life of 10,000 hrs. Motor bearings rated for 30,000hrs and often 3 sets of vanes.
Last edited by Bill Cody; 05/31/11 01:38 PM.
