TAIFU 4" Pump Casing Stainless Impeller Deep Well Pump 1 1/4" Outlet 1.0HP & 2.0HP Single Phase

The TAIFU 4-SM2 Series (often categorized under the 4SP or 4SPM designation in technical catalogs) is a premium 4-inch submersible deep-well pump. Unlike the 4-STM series which uses thermoplastic impellers, the 4-SM2 / 4SP series is typically a full stainless steel construction, designed for maximum durability in harsh water conditions.Technical SpecificationsThe 2 in 4-SM2 refers to the rated flow rate of $2 m^3/h$ (approx. 33 Liters per minute), which is the "sweet spot" for domestic and small-farm borehole applications.Pump Diameter: 4 Inches (fits standard 100mm casings).Power Range: Typically available from 0.5 HP to 3.0 HP.Max Head (Lift): Depending on the horsepower, it can reach depths of 150 to 280 meters.Flow Rate: Rated at $2 m^3/h$, with a maximum capacity of around $2.5 m^3/h$.Power Supply: Available in Single-Phase (220V/240V) with a control box, or Three-Phase (380V/415V).Key FeaturesBuilt-in Check Valve: Prevents the weight of the water column in the pipe from flowing back into the pump (water hammer), protecting the impellers from reverse rotation damage.Oil-Filled Motor: Uses food-grade, non-toxic cooling oil. This design allows for better pressure compensation at extreme depths and ensures the bearings are always lubricated.Sand-Resistant Design: While it uses steel impellers, the tolerances are engineered to allow for a maximum sand content of up to 0.25%, which is excellent for new or less-developed wells.High Efficiency: The smooth internal surfaces of the stainless steel diffusers mean less energy is lost to friction, resulting in lower electricity bills for the same amount of water delivered.Best Use CasesDeep Boreholes: Because of its full-metal construction, it is the best choice for wells deeper than 100 meters where pressure on the pump shell is extreme.Drinking Water: The use of AISI 304 stainless steel ensures no lead or heavy metals leach into the water supply.Livestock & Irrigation: Reliable enough for continuous daily use in agricultural settings. WARRANTY INCLUSIONS & EXCLUSIONS ● 7 days replacement against factory defect is subject to approval by our authorized personnel only after diagnosis by our authorized technician.● Warranty does not apply to failures due to; human error, mishandling, misuse of any unit are not cover for replacement.WARRANTY CLAIM ● Fill out our warranty card attached to the manual inside the box with general information like Date, Model no., Serial no., and Contact no.● Serial number on the unit must match the one written on the warranty card.● Bring your warranty card or any proof of purchased when claiming the warranty.