Detailed Specification Breakdown

Specification Meaning & Interpretation

Brand SHIYUAN

A Chinese manufacturer known for producing a range of pumps, including submersible utility and bilge pumps.

Type Submersible Pump

The entire pump unit is designed to be placed completely underwater. This is efficient, helps cool the motor, and minimizes priming issues.

Power: 12V / 250W Voltage & Wattage

- 12V DC: It must be powered by a 12V DC source, like a car battery, marine battery, solar battery bank, or a dedicated 12V power supply.

- 250W: Its power consumption is 250 Watts. This draws about 20.8 Amps (calculated as: Amps = Watts / Volts = 250W / 12V). You need a battery and wiring that can handle this high continuous current.

20M (Cable) Cable Length

The power cable is 20 meters long (~65.6 feet). This is a key feature for deep or remote applications, allowing you to keep the battery and power source far from the water.

20M Depth Max Head (Lift)

This is the most important performance metric. It means the pump can push water vertically up to a height of 20 meters (65.6 feet).

CRUCIAL NOTE: This is NOT the submersion depth. It is the maximum vertical discharge height. The actual pump can likely be submerged much deeper.

Key Performance Characteristics (What to Expect)

High Pressure, Lower Flow at Height: A 250W pump with a 20m head is engineered for pressure, not for extreme volume at low heights. Its flow rate (e.g., Liters Per Minute - LPM) will be strong at low levels but will decrease significantly as it approaches its maximum 20m head.

Example: It might pump ~150 LPM at 0m head, but only ~20 LPM at 18m head. You need to check the pump's manual or product listing for its "flow curve" or "performance chart."

High Current Draw: At ~21 Amps, it will drain a standard car battery (approx. 50Ah) in about 2-3 hours. For extended use, a large deep-cycle battery (100Ah+) is recommended.

Common Applications

This pump is built for tough jobs:

Emergency Water Removal: Pumping out flooded basements, construction sites, or trenches.

Marine Use: As a high-capacity bilge pump for large boats or yachts.

Agricultural & Irrigation: Moving water from deep ponds, wells, or tanks to fields over long distances or uphill.

Construction & Dewatering: Keeping foundations and pits dry on job sites without AC power.

Vehicle-Based Applications: Ideal for use with a truck or SUV due to the easy 12V connection.

What You MUST Check Before Buying/Using:

Flow Rate Chart: Find the pump's performance graph. You need to know its flow rate at the actual height you need to pump the water.

Outlet Size: Confirm the diameter of the discharge port (e.g., 1", 1.5", 2") to buy the correct hose and fittings.

Switch Type: Does it have an automatic float switch? If not, you must manually turn it on/off, which is impractical for most applications. Many models offer an optional float switch.

Battery Requirements: Ensure your battery has sufficient Amp-Hour (Ah) capacity and that your wiring and connectors are rated for 20+ amps to prevent overheating and voltage drop over the long 20m cable.