SN Series Three-Screw Pump

Place of Origin: Made In China
Delivery Time: 15-30 days
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SN three-screw pump has self-priming capability, and its suction performance during startup is also good (see NPSH value table).
Due to parts being universal, serialized, with bottom feet, bracket type, immersed multi-structure forms, it can be configured as horizontal, vertical, and other installation forms. According to the conveying medium, it can be heated or cooled, and different structural types can be selected.

It can transport various solid-free, non-corrosive oils and liquids with lubricating properties.
In heating equipment, it is used to transport fuel oil, diesel oil, and lubricating oil.
In the machinery industry, it is used for hydraulic pressure, lubrication, and boosting and transferring.
In chemical, petrochemical, food, and other industrial sectors, it is used for loading, unloading, and conveying.
On ships, it is used for boosting, fuel injection, lubricating oil, and hydraulic oil transfer devices.

Series	Main Characteristics	Maximum Flow (l/min)	Maximum Delivery Pressure (Mpa)
SN	Low pressure, single head, simple structure, balanced axial thrust	5300	4.0

Code	Description of Structure	Usage
U12.1	Internal ball bearing, mechanical seal	Good medium lubricity, temperature ≤80℃
K2	External ball bearing, pack shaft seal	Pumping medium with less lubricity or higher viscosity, temperature ≤150℃
E6.7	External ball bearing, packing shaft seal	Pumping medium with less lubricity, temperature ≤150℃

Pump Body	Casing Insert	Shaft Seal	Usage Range
HT200 Cast Iron	ZQSn6-6-3 Bronze	Special bushing	For pumping medium with good lubricity, such as fuel oil, diesel oil, etc.
HT200 Cast Iron	ZQAl9-4-4-2 Aluminum Bronze	Cast iron bushing	For pumping medium with poor lubricity and high viscosity, such as heavy oil, asphalt, etc.
QT450-10 Nodular Cast Iron	ZQSn6-6-3 Bronze	Special bushing	For pumping medium with less lubricity and suitable viscosity, such as lubricating oil, etc.
QT450-10 Nodular Cast Iron	ZQSn10-2 Bronze	Cast iron bushing	For pumping medium with poor lubricity and high viscosity, such as heavy oil, etc.
ZCuSn5Pb5Zn5	Special Bronze		For pumping medium with less lubricity and high viscosity, such as heavy oil, etc. (Only for SN500)

Attention please: The description might be incorrect, please contact us for confirmation.
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