The self-priming pump will evacuate all the air. The vacuum produced as the impeller rotates (2) draws air into (1) the pump where it is mixed with the liquid already contained in the pump casing.When all the air has been evacuated from the suction line the liquid is pumped, even if air-laden.
The air/liquid mixture is driven to the discharge side where the air separates out and is expelled through the discharge port (3) while the liquid, due to the higher gravity, falls back and is reused in the suction side through a small passage.
The high suction port keeps enough liquid inside the casing to allow re-priming any time. The check-valve in the suction port (4) avoids a backflow of the liquid and reduces priming time.
Advantages
Suction and discharge ports are available flanged or threaded (up to 4”). The threaded port have through-holes to take away faster the pipes.
For easy installation, the DIN or ASA flanged ports have through-holes and ¼” threaded hole for Vacuum meter and manometer.
Check valve: avoids backflow of liquid from the discharge side and reduces priming times. Available in NBR, Viton® (FKM), PTFE & EPDM.
Maintenance-free ball bearings.
Mechanical seal in Sic/Viton® (FKM) with stainless steel shaft sleeve and lubrication behind the seal to improve dry running capabilities.
Heavy-duty open impeller and wear plate designed for abrasion and passage of solids. On request with cutting device for soft solids.
Typical Applications
Animal food
Bentonite
Clean or dirty solvents
Cooling milk
Diesel
Fertilizer
Fire fighting water
Flood drainage
Gasoline
Light-oil
Lime milk
Liquid manure
Must
Petroleum products
Rain water
River water
Soda
Sump water
Transformation oil
Wash fluids
Wastewater
Water with cutting sand
Water with mud
Water with sand
Water with solids
…and many more.
Construction
Stationary
Close coupled pump
Bi-Block with flanged ports
Bi-Block with flanged ports on base plate
With hydraulic motor
Classic, with elastic coupling, guard and B3 electric motor on base plate