Runjin QH is a multistage submersible pump family for seawater transfer. The published range covers 50–2,200 m³/h and 5–800 m head through different sizes and stage selections.
QH seawater submersible pumps — official family illustration; supplied configuration must be confirmed.
Published specifications
Manufacturer catalog data
Family flow range50–2,200 m³/h
Family head range5–800 m
Family motor range3–850 kW
Maximum immersion70 m
Minimum inlet submergence1.5 m below lowest dynamic water level
FamilyQH seawater submersible pumps
InstallationVertical submerged standard arrangement
Product details
The catalog describes copper-nickel or stainless material configurations and a water-filled sealed motor. Cable protection and material choice must be matched to salinity, water chemistry and the exposure conditions rather than treating all seawater installations as equivalent.
For the standard vertical arrangement, the source calls for the inlet to remain at least 1.5 m below the lowest dynamic water level and normally places the motor bottom at least 2 m above the seabed. Maximum immersion is listed as 70 m. The broad flow, head and power ranges are family limits; they do not identify a single pump capable of every combination.
SELECTION NOTES
Specify the operating duty
Provide salinity, water chemistry, temperature, required duty, tide or water-level range and seabed clearance. Confirm material grade, motor filling medium, cable protection and a model-specific curve.
Published limits may describe different configurations within a series. Confirm that the required operating conditions are valid together.
