Grundfos AP50B.50.08.1V 96004587 230v DIRTY WATER AND SEWAGE W/O FLOATSWITCH Submersible Pump 2" #4790
£579.17GBP
inc VAT
Technical overview
About these figures
These figures provide simplified information for searching, filtering and initial comparison. They are not a complete specification. Exact details depend on the model and configuration.
Power rating: Usually the motor’s rated mechanical output (P2). Electrical input power (P1) is a different value. Check the product’s nameplate or manufacturer’s documentation to confirm which rating applies.
Outlet size: The nominal size class is expressed on a millimetre basis: for example, DN40 denotes a nominal 40 mm size. It does not specify the exact measured opening, connection type, thread, flange drilling or pressure rating.
Head and flow: Indicative figures describing the pump’s performance envelope, rather than a single operating duty point. Do not assume maximum flow is available at maximum head, or that every combination within the ranges is achievable. Minimum figures do not establish safe continuous operating limits. Consult the relevant performance curve.
Check the product description, nameplate and manufacturer’s documentation before selection or installation. Please contact us before purchasing if you need help confirming suitability or connection details.
| Nominal voltage | 240v |
| Rated power | 0.74 kW |
| Nominal outlet size (mm) | DN 50 |
| Shipping Weight | 18.0 kg |
| Package Dimensions | 60.0 × 30.0 × 30.0 cm |
| Indicative minimum head | 3.0 m head (0.3 bar) |
| Indicative maximum head | 11.0 m head (1.1 bar) |
| Indicative minimum flow | 0.0 m³/h (0.0 L/s) |
| Indicative maximum flow | 24.5 m³/h (6.8 L/s) |
Grundfos AP50B.50.08.1V (96004587) – 230V Dirty Water & Sewage Submersible Pump without Float Switch (Rp 2") #4790
This listing is for a Grundfos UNILIFT AP50B.50.08.1V stainless steel submersible dirty water / wastewater pump with a vortex impeller and Rp 2" threaded discharge. The AP50B range is designed for dirty water, effluent and domestic wastewater duties where solids handling and reliable submersible operation are required.
Condition: supplied in as new surplus condition – the pumps have not been installed or used but may show minor cosmetic markings from storage and handling. Guarantee: supplied with a 2-year guarantee.
- Pump type: UNILIFT AP50B submersible dirty water / wastewater pump
- Product number: 96004587
- Impeller type: vortex impeller
- Free passage: 50 mm
- Discharge connection: Rp 2" threaded outlet
- Electrical supply: 1 × 230 V, 50 Hz
- Level control: manual / external control — no float switch supplied
- Protection: thermal overload / thermal protection
- Seal arrangement: double shaft seal with intermediate oil chamber
- Maximum installation depth: 7 m with 10 m cable
Need help confirming suitability?
Call us on 01803 220416 for technical advice.
Manufacturer product page
Full technical details can be found on the official Grundfos product page:
View Grundfos AP50B.50.08.1V (96004587) – Variant specifications
Construction & key features
- Stainless steel construction with integrated single-phase submersible motor
- Vortex impeller designed for dirty water and wastewater duties with reduced clogging risk
- 50 mm free passage for solids handling within the pump’s design limits
- Double shaft seal with intermediate oil chamber pre-filled with non-toxic special oil
- Suitable for free-standing installation or compatible auto-coupling arrangements where fitted
Delivery & Shipping
- UK and international delivery available
- Next working day dispatch is often possible
- If delivery is time-critical, please call to confirm availability
Frequently Asked Questions
What does the model number mean?
UNILIFT AP – Grundfos submersible drainage / dirty water pump range
50 – maximum solids size / free passage class
B – AP Basic pump type
50 – nominal outlet port diameter, 50 mm / Rp 2"
08 – motor power output class
1 – single-phase motor
V – vortex impeller
What discharge connection does this pump have?
This pump has an Rp 2" threaded horizontal outlet port. This can be connected to existing pipework, hose tails or fittings using suitable threaded adapters.
Does this pump include a float switch?
No. This version is supplied without a float switch and is intended for manual operation or use with an external level control / control panel.
Why choose a vortex impeller?
A vortex impeller is often chosen where clog resistance is more important than maximum hydraulic efficiency. The vortex action helps dirty water, suspended solids and fibrous material pass through the pump with reduced risk of blockage.
Can model numbers be interchanged?
Occasionally it is possible to swap different model or part codes within the AP range, for example float-switch and non-float versions, depending on the duty and installation. Please call us before ordering if you are replacing a different AP model.
What is the maximum installation depth?
Maximum installation depth is 7 m with 10 m cable.
Do accessories come fitted?
No. Optional accessories such as auto-coupling sets, non-return valves or external controls are supplied separately unless specifically stated.
About Our Stock
Stock code: #4790
We have two units available: one supplied in the original Grundfos box and one supplied without the original box. Both are new and unused surplus pumps. All units are inspected prior to dispatch and supplied with a 2-year guarantee.
Specification & guidance notice: Technical information and FAQ content are provided in good faith based on manufacturer literature and industry experience. Descriptions of hydraulic types and application suitability represent general guidance only and do not constitute a guarantee of performance. Actual results will depend on system design, pipework losses, media characteristics, and installation conditions. Please consult the manufacturer & thier documentation and satisfy yourself that the equipment is suitable for your specific application prior to purchase.