The BQ series refers to a type of submersible pump that is made from stainless steel. These pumps are designed to be used underwater, and are particularly well-suited to applications that require resistance to corrosion and other types of wear and tear.
All of the wetted parts of the BQ series pump are made from stainless steel. This means that they are resistant to corrosion and other types of damage that can be caused by exposure to water over time. As a result, these pumps are able to provide reliable performance over a long service life.
The BQ series pump also features a single-channel, solid handling impeller. This impeller is designed to be able to handle solid particles that may be present in the water being pumped, which can help to prevent clogging and other types of damage to the pump.
Finally, the BQ series pump is available in a guide rail fitting model. This means that it can be easily installed and removed from the water source using a set of rails that are attached to the pump. This makes it a convenient choice for use in applications where frequent removal and reinstallation of the pump is required.
• Draining wastewater from chemical plant, plastic plant, etc.
• Draining effluent from hospital and laboratory, etc.
All Wetted Parts Made of Stainless Steel
As parts of popular B-series, Tsurumi has come up with BQ-series made of stainless steel casting (SCS13). The shaft, bolts and nuts are made of 304 stainless steel (SUS304) or 316 stainless steel (SUS316). It is suitable for pumping wastewater containing solids and corrosive substances.
Single-channel, Solid Handling Impeller
The widely opened volute casing and a single-channel impeller allow the pump to pass the solid matters from inflow to discharge with minimal blockage.
Guide Rail Fitting Model Available
The BQ-series is available with guide rail fittings. Guide rail fitting accessories are made of stainless steel casting (SCS13) or 304 stainless steel (SUS304). Pumps in this series have a ‘TOS’ identifier on top of their model codes.
| 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 Lengthm |
Cable Code |
Dimensions L ×H (mm) | Dry Weight** (kg) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Free Standing |
Guide Rail Fitting |
Free Standing |
Guide Rail Fitting |
|||||||||||
| 1 | 50 | 50BQ2.4 | TOS50BQ2.4 | 0.4 | Three | 3000/3600 | D.O.L. | 19/17 | 6 | A | 340 ×450 | 556 ×508 | 25 | 24 |
| 2 | 50 | 50BQ2.75 | TOS50BQ2.75 | 0.75 | Three | 3000/3600 | D.O.L. | 20/24 | 6 | A | 410 ×506 | 625 ×546 | 40 | 39 |
| 3 | 50 | 50BQ2.75H | TOS50BQ2.75H | 0.75 | Three | 3000/3600 | D.O.L. | 20 | 6 | A | 409 ×483 | 625 ×527 | 40 | 39 |
| 4 | 80 | 80BQ21.5 | TOS80BQ21.5 | 1.5 | Three | 3000/3600 | D.O.L. | 25 | 6 | A | 424 ×558 | 646 ×608 | 50 | 48 |
| 5 | 100 | 100BQ42.2 | TOS100BQ42.2 | 2.2 | Three | 1500/1800 | D.O.L. | 40 | 6 | C | 602 ×652 | 821 ×693 | 93 | 86 |
| 6 | 100 | 100BQ43.7 | TOS100BQ43.7 | 3.7 | Three | 1500/1800 | D.O.L. | 53/45 | 6 | C(E*) | 602 ×735 | 821 ×771 | 109 | 102 |
| 7 | 100 | 100BQ43.7H | TOS100BQ43.7H | 3.7 | Three | 1500/1800 | D.O.L. | 35 | 6 | C(E*) | 637 ×727 | 853 ×768 | 109 | 102 |
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 |
