MVP Series Leachate Pumps
Application
For use in 4-inch and larger-diameter wells and up to 200-ft depths.
Benefits:
- Domed Bottom
- Air Valve Filtration
- Advanced Positive-Shift Air Valve
- Stainless Steel Linkage
- Bundled Tubing
- Well Seals
Controllerless Air Lift Pumps For Landfills
The MVP Leachate pumps provide improved performance in harsh landfill environments. The leachate pumps have a closed top to limit debris from entering, therefore they are bottom filling only. The bottom inlet screen assembly is domed to provide a smooth transition during installation in well casings with internal upset joints common on HDPE landfill wells. The standard leachate pumps have stainless steel fittings, 1” fluid discharge, 3/8” air exhaust and 1/4” air supply lines. These fitting can be changed to accommodate your specific site requirements. The MVP Leachate pump is available
Operation:
The pump uses an internal float which responds to the fluid level within the pump body to cycle the pump automatically, based on the recharge of the well. As the pump fills with fluid, the float moves to the upper position, activating the mechanical arm which opens the air inlet valve. This allows air to enter the pump chamber, simultaneously pressurizing the vessel and closing the lower inlet check valve. The air pressure moves the fluid to the surface. As the fluid is emptied from the vessel, the float returns to the lower limit — off position — closing the air inlet and opening the air exhaust valve. During the filling cycle, air is vented through the exhaust port and the cycle is automatically repeated.
in all-stainless or stainless steel and Delrin® construction. In most cases, the standard all stainless-steel construction is recommended. In less demanding conditions such as condensate wells, the Delrin and stainless steel configuration may be acceptable. Both pumps also feature an air override that allows the pump and discharge lines to be emptied from the surface, reducing weight prior to removal.
Unique Design Features:
Air Valve
The advanced air valve design incorporates a special Viton® ball (1) with a stainless steel seat (2) to provide a leak-tight seal. The positive seal eliminates air leakage that can contribute to increased precipitation at the pump head. The valve design significantly reduces the force required by the internal float to actuate the valve thus providing a positive shift even in low filling situations. All of this adds to the reliability standard established by the MVP IV Series pumps.
Air Valve Filtration
The air valve incorporates a 330-mesh stainless steel screen on the bottom and top of the assembly (3). The bottom screen prevents debris from entering when the air supply to the pump is turned off. This is a common occurrence on all pneumatic pumps. When the air supply is off, the f oat will move to the top position and open the air valve creating a pathway for liquid or debris to enter the valve assembly if there were no screen.
Valve Operation
The MVP Leachate pump incorporates the air and exhaust valves on the same side of the pump head to impart a mechanical shifting advantage compared to valves located on opposite sides. The air valve operation is assisted by a magnet encapsulated in the pump head to shift the air valve to the open position instantly. This improves both performance and reliability
Pump Linkage
The MVP Leachate pumps feature all stainless steel and Delrin® linkage components to add durability and life to the pump. The high-strength stainless springs act as shock absorbers to reduce the energy that is created by the float movement. The springs are contained within a bushing, preventing them from being compressed beyond their design strength, increasing their life.
Pump Maintenance
The pumps are designed to be field serviceable. Complete access to the internal components is achieved by unthreading the bottom intake of the pump. Should access to the valve assembly be required, simply remove the four screws from the pump head.
MVP Air Valve Assembly
123 North Orchard Street
Suite 1-B
Ormond Beach, FL
32174
386-615-8780
386-673-2293 fax
www.sligosystems.com
