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 stainless steel submersible effluent / sewage pump with a vortex impeller and a Rp 2" (2") threaded discharge. The AP50B range is designed for dirty water, effluent and domestic wastewater duties where reliable solids handling and easy installation are important.

• Pump type: UNILIFT AP50B (AP Basic)
• Impeller type: Vortex impeller
• Discharge connection: Rp 2" threaded outlet
• Level control: manual / external control (no float switch supplied)
• Protection: thermal overload / thermal protection (single-phase motor)

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

Key specifications (summary)

• Model: AP50B.50.08.1V
• Grundfos product number: 96004587
• Electrical supply: 1 × 230 V, 50 Hz
• Power output: 08 (type code)
• Impeller: vortex design
• Outlet: Rp 2" threaded discharge
• Maximum installation depth: 7 m (with 10 m cable)

Construction & key features

• Stainless steel pump with integrated single-phase submersible motor
• Vortex impeller designed to reduce clogging risk with fibrous/dirty water
• Double shaft seal with intermediate oil chamber (non-toxic special oil)
• Service-friendly design intended for easy maintenance and long service life
• Ready for installation free-standing or on an auto-coupling system (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 – type range
50 – maximum solids size class
B – AP Basic pump type
50 – nominal outlet port diameter (50 mm / Rp 2")
08 – power output (type class)
1 – single-phase motor
V – vortex impeller

What discharge connection does this pump have?

This pump has a Rp 2" threaded horizontal outlet port. This is a standard connection that can be adapted to existing pipework using suitable threaded fittings.

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 the priority. The vortex action helps solids and fibrous material pass through with reduced risk of blockage, making it well suited to dirty water and effluent applications.

Can model numbers be interchanged?

Occasionally it is possible to swap different model or part codes for alternative versions within the AP range (e.g. float switch vs. non-float versions), depending on the duty and installation. Please call us for a recommendation before ordering.

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.

About Our Stock

Stock code: #4790
We specialise in supplying new and unused surplus pumps. All units are inspected prior to dispatch and supplied with guarantee.