Vertical dry-pit submersible pumps are mounted on pedestals (or stand) and include an inlet elbow attached to the bottom of the pump. A horizontal dry-pit submersible pump is installed like a typical end suction centrifugal pump. The inlet conditions are much better (Horizontal- straight shot...
I am aware of a PC Pump operating OK in a sewage lift station application. As chris00nj states, "And wrapping (in case you have hair and fibres) can become a problem, too." If the PC pump becomes problematic and expensive to maintain in this installation, all of your options (pre-screening...
A conventional non-clog sewage pump (submersible or dry-pit)will not be a happy camper in a prison collection system. Flygt and Vaughn both make submersible chopper pumps that are used in this type of application. This is the toughest job for any sewage pump because of the varied and unusual...
I am trying to design a simple pumping system to transfer water over a 10' high wall that divides two basins. I want to use a 7.5HP submersible pump for this application. Design flow will be ~1-1.3 MGD. Static head will vary between 2 and 7 ft. In order to create sufficient TDH, I considered...
mechprocess,
you didn't mention the application. Most submersible pumps have limitations on metallurgy and max. operating temperature. Other than that, I think submersibles are generally easier to service and maintain. There is no comaprison between pulling a vertical turbine pump and a...
I have a portable submersible solids handling pump mounted on a self-supporting stand in a large open pond. The pump curve shows BEP to be 1500 GPM @ 29 FT TDH. The pump curve ends at ~2500/10. The pump is operating just beyond BEP at ~1700 GPM @ 26 FT TDH. This pump has an 8" discharge and...
Vapex makes an "ozone fogger" and only requires 110V power and a garden hose connection to generate ozone. I beleive their facility is in Florida and they have a sales rep. in No. california. They should be able to answer your questions.
ITT Flygt (in U.S.) sells an odor control system that...
Quick rule of thumb- Only use grinder pumps when flow rate is less than ~100 GPM. The grinder pump allows you to use a 1-1/2" or 2" discharge pipe because solids are reduced in size and can be transported at velocities> 2'/sec.
For higher flowrates, use 4" dia. pipe as long as you have...
Thanks vanstoja, I have seen plenty of available literature on the subject of "fluid viscosity effects on centrifugal pumps." The charts in HI are applicable to centrifugal pumps, but caution against applying them to axial flow pumps. There are a few papers I've come across on this subject...
tmurf,
ITT Flygt's pump selection program (FLYPS) does nice graphical presentations of multiple VFD operated pumps. The best way depends on your system (system head curve). There are also advanced pump station VFD controllers (duplex, triplex, etc) on the market that will optimize multiple...
