The Basement Watchdog
The SI-50V is a ½ HP AC pump with a built-in strainer that can pass up to ½-inch solids, allowing the pump to do double duty as a sump and effluent pump. This rugged, cast-iron pump includes an integrated, contractor-grade vertical float switch so the pump turns on when you need it.
The Basement Watchdog SI-50V ½ HP AC primary sump pump features an energy-saving, Permanent Split Capacitor (PSC) motor that has carbon/ceramic shaft seals and thermal protection to safeguard the motor. The upper and lower ball bearings ensure the pump runs quietly and extend its life.
The Basement Watchdog SI-50V ½ HP AC primary pump is formed out of solid cast iron with stainless-steel fasteners. To prevent airlock and make installation easier, they also include a built-in weephole. The built-in strainer can pass ½-inch solids, which allows it to function as both a sump and an effluent pump.
The Basement Watchdog SI-50V ½ HP AC primary sump pump saves you money on your electric bills and reduces its impact on the environment. The SI series of sump pumps are engineered with eco-friendly PSC motors and dual ball bearings that together deliver industry-leading energy efficiency and savings.
The Basement Watchdog SI-50V AC primary sump pump features a professional-grade, built-in vertical switch for years of reliable operation in sump or effluent applications.
The Basement Watchdog SI-50V moves 4,300 GPH at 0-foot lift and 3,600 GPH at 10-foot height.
The Basement Watchdog’s industry-leading service department, located here in the U.S., is staffed by a team of experts. We’re here to help for the life of your pump, from installation day to troubleshooting years from now. Our top priority is providing you with the best customer experience anywhere, and we offer free lifetime support. Call us at (800) 991-0466.
The Basement Watchdog has been protecting homes like yours for 35+ years and continues to be a market leader. We build the most dependable, user-friendly pumps in the industry using intelligent design, premium components, and quality manufacturing practices that include thoroughly testing every single unit. You can be confident that The Basement Watchdog is watching out for you!
A unit of power that indicates how much work a pump can perform when connected to a working wall outlet. The higher the horsepower, the more powerful the pump is, allowing it to move more fluid, overcome greater pressure, or lift fluid to higher elevations
How are pumps cooled? Most pumps are oil filled, using dielectric oil to draw heat from the motor and lubricate the bearings. That oil is in contact with the housing of the pump, which is cooled by the groundwater in the pit. Water-cooled motors have both more efficient motors and better bearings, which create less heat and no need for cooling oil. The motor is pressed directly against the housing, which is cooled by the groundwater in the pit. Note: A small amount (less than 1 oz.) of food-grade oil is in the bearings of a PSC motor for lubrication, not for cooling the pump.
Basement Watchdog pumps incorporate advanced Permanent Split Capacitor (PSC) motors for energy efficiency and reliability vs. the older style shaded-pole motors.
A float switch is the component of your sump system that turns on the pump. Most of our primary pumps use the super reliable Dual Float Switch to activate the pump.
The pump discharge is the plumbing, typically 1½-inch PVC pipe, that carries the water out of the house or building, away from the pump and sump pit.
The pump housing is the outer casing of the pump that encloses the pump motor.
Pump seals are the internal seals that prevent moisture from reaching the motor or any electrical components of the pump.
Bearings are mechanical components that support the rotating shaft of the pump, allowing it to spin smoothly while minimizing friction and wear. Bearings are essential for maintaining the pump’s efficiency, reliability, and longevity.
An impeller is a rotating disk that has blades, or vanes, which move the water using centrifugal force up and out through the discharge pipe.
A strainer is a filtration device, built into the base of Basement Watchdog pumps, which prevents the intake of objects that can harm the internal components of a pump.
A fastener is a component, such as a screw, that holds other components together.
Pump Flow @ 10 Feet (GPH) is a measure of the amount of water (gallons per hour) that a pump can move through a 10-foot vertical discharge pipe before the water exits the home or building.
Max head is the maximum vertical height a pump can push water straight up against gravity. It is the point at which gravity takes over the outflow in the discharge.
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