Grundfos AP50B.50.08.1V 96004587 230v DIRTY WATER AND SEWAGE W/O FLOATSWITCH Submersible Pump 2" #4790

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.