Submersible stainless steel pump SFQ series, are a type of pump designed to be submerged in liquid, made from stainless steel material. The SFQ series features a semi-open impeller, which allows for the pumping of liquids containing small solids without clogging the pump. The pump also has a corrosion-resistant mechanical seal, which helps to protect the internal components from damage caused by corrosive liquids.
These pumps are specifically designed to provide a high level of durability when draining corrosive liquids. They offer an immediate solution to customers who have a need for a reliable and long-lasting pumping system that can handle harsh and corrosive liquids. By using a submersible stainless steel pump SFQ series, customers can expect a highly efficient and effective pumping solution that is built to last.
Austenitic Stainless Steel for Wetted Parts
At the metal components that come in contact with liquid are made
of stainless steel casting (SCS14) or 316 stainless steel (SUS316).
Corrosion-resistant Mechanical Seal
The SFQ-series is equipped with a special mechanical seal. The seal has superb corrosion resistance because silicon carbide is used for the seal faces while the gaskets are made of fluoro-rubber.
Powerful Pumping of Corrosive Liquids
The SFQ-series is ideal for the transfer and/or draining of corrosive liquids in chemical and pharmaceutical plants, laboratories, etc.
Seal Pressure Relief System
The SFQ-series of 5.5kW and over has a seal pressure relief system. This system features an independent pump casing separate form the oil casing in which the mechanical seal is housed. Installed between these two components is an intermediate chamber which is opened to the outside. Thanks to this system, the mechanical seal is only subject to static pressure (submergence pressure) with no pumping pressure operating on the mechanical seal.
Guide Rail Fitting Model Available
The SFQ-series of 5.5kW and over is available with guide rail fittings. Guide rail fitting accessories are made of stainless steel casting (SCS14) or 316 stainless steel (SUS316). Pumps in this series have a ‘TOS’ identifier on top of their model codes.
• Draining wastewater from chemical plant, plastic plant, etc.
• Draining effluent from hospital and laboratory, etc.
Discharge Bore : 40 • 50mm (0.4~3.7kW)
| Curve No. |
Discharge Bore mm |
Model | Motor Output kW |
Phase | Speed (S.S.) min -1 |
Starting Method |
Solids Passage mm |
Cable Length m |
Cable Code |
Dimensions L × H mm |
Dry Weight** kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 50 | 50SFQ2.4S | 0.4 | Single | 3000/3600 | Capacitor | 6 | 5 | a | 252 × 427 | 21 |
| 50 | 50SFQ2.4 | 0.4 | Three | 3000/3600 | D.O.L. | 6 | 6 | A | 252 × 398 | 20 | |
| 2 | 50 | 50SFQ2.75 | 0.75 | Three | 3000/3600 | D.O.L. | 6 | 6 | A | 252 × 398 | 22 |
| 3 | 80 | 80SFQ21.5 | 1.5 | Three | 3000/3600 | D.O.L. | 6 | 6 | A | 329 × 484 | 36 |
| 4 | 80 | 80SFQ23.7 | 3.7 | Three | 3000/3600 | D.O.L. | 15 | 6 | C (E*) | 359 × 542 | 52 |
Discharge Bore : 80mm (5.5~11kW)
| Curve No. |
Discharge Bore mm |
Free Standing Model | Guide Rail Fitting Model |
Motor Output kW |
Phase | Speed (S.S.) min -1 |
Starting Method |
Solids Passage mm |
Cable Length m |
Cable Code |
Dimensions L ×H (mm) | Dry Weight* (kg) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Free Standing |
Guide Rail Fitting |
Free Standing |
Guide Rail Fitting |
|||||||||||
| 1 | 80 | 80SFQ25.5 | TOS80SFQ25.5 | 5.5 | Three | 3000/3600 | D.O.L. | 18 | 8 | G | 635 ×844 | 808 ×875 | 124 | 113 |
| 2 | 80 | 80SFQ27.5 | TOS80SFQ27.5 | 7.5 | Three | 3000/3600 | D.O.L. | 23/20 | 8 | I | 635 ×844 | 808 ×875 | 123 | 112 |
| 3 | 80 | 80SFQ211 | TOS80SFQ211 | 11 | Three | 3000/3600 | Star-Delta | 23 | 8 | K | 635 ×892 | 808 ×923 | 143 | 132 |
Model MC-2 is a heavy-duty type float switch with a shock absorber.
Having equipped with a high grade micro switch, the MC-2 assures trouble-free operation in the liquid containing much suspended solids and floating scum. Either of the two contacts, normally-open or normally-close, can be selected as required.
Model RF-5 is an economy type float which can detect upper/lower limit water levels with single float. The snap on-off action ensures stable operation in clean or waste water containing suspended solids or oil and fat.
The guide rail fitting system connects the pump to and from the piping easily just by lowering and hoisting the pump, allowing easy maintenance and inspection without the need to enter the sump.
When the SFQ, BQ or CQ series is ordered with guide rail fitting, the following accessories will come with the pump as standard equipment (Attach ‘TOS’ to its model code.)
· Lifting Chain 5m (with Shackles)
· Guide Support (with Bolts & Nuts)
· Guide Hook (with Bolts)
· Duckfoot Bend
· Guide Connector (with Bolts)
· JIS 10kg/cm 2 Flange (with Packing, Bolts & Nuts)
Single-Phase
| Code | No. of Cables |
Cores × mm2 | Outer Dia. mm |
Material |
|---|---|---|---|---|
| a | 1 | 3 × 1.25 | 10.1 | PVC |
Three-Phase
| Code | No. of Cables |
Cores × mm2 | Outer Dia. mm |
Material |
|---|---|---|---|---|
| A | 1 | 4 × 1.25 | 11.1 | PVC |
| C | 1 | 4 × 2.0 | 11.8 | |
| E | 1 | 4 × 3.5 | 13.9 | |
| G | 1 | 4 × 3.5 | 14.1 | Chloroprene Rubber |
| I | 1 | 4 × 5.5 | 16.8 | |
| K | 3 | 4 × 3.5 | 14.1 | |
| 3 × 3.5 | 12.9 | |||
| 2 × 1.25 | 9.8 |
| Material | JIS | ASTM/AISI | DIN | BS |
|---|---|---|---|---|
| Stainless Steel | SUS304 | 304 | X5 CrNi 18-10 |
304S31 |
| SUS316 | 316 | X5 CrNiMo 17-12-2 |
316S31 | |
| Stainless Steel Casting |
SCS13 | CF 8 | G-X6 CrNi 18-9 |
304C15 |
| SCS14 | CF 8M | G-X6 CrNiMo 19-11-2 |
316C16 |
