ZDS 4″ Borehole Pump Technopolymer


Multistage centrifugal hydraulic parts designed to be used in 4″ wells or larger, available in a wide range of deliveries and heads and manufactured to ISO 9001 standards. They are suitable in applications for lifting, distribution and pressurisation in civil and industrial water systems, garden irrigation systems, filling of pressure vessels and tanks, fire fighting systems, washing systems, drainage systems and fountain supply.

ZDS Pumps Innovation Group Official Seller UK in Ramsbottom, Manchester

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ZDS 4″ Borehole Pump Technopolymer

4” Hydraulic parts. Upper head and pump support in TECHNOPOLYMER

Each single part of the ZDS 4″ borehole pump in Technopolymer has been designed with particular care and attention. The check-valves, made of resistant thermoplastic material, have been tested to over 600.000 water hammers at 37 bar (370 m.c.w.) water pressure. The special design of the hydraulic parts, made in technopolymer, allows the pump to work even in heavy sand conditions. The pump requires a low starting-torque which enables longer life and greater reliability even under conditions of severe voltage drops.

What is so special about the design of our hydraulic parts?

The internal construction of our hydraulic parts consists primarily of five pieces; impeller with metal support ring, diffuser, stage-box, technopolymer bearing and floating vinyl-ring. ZDS has selected this unique design in order to make the pump much more resistant to sand and equivalent abrasives. Compared to conventional designs and in some particular conditions, the hydraulic part may need only 25% of the starting torque to start pumping. This makes the ZDS pump a particularly good option if challenged with an unstable power supply.


  • The check valve is integrated into the upper head to allow the weight of the water column and any water hammer to be discharged without damaging the impellers and diffusers;
  • To protect the wires from being damaged during installation there is a thick cover cable in technopolymer which is resistant and also very rigid;
  • Head and pump support in technopolymer, strong and resistant to acid water corrosion (low pH value) and ferrous water;
  • Maximum pump overall diameter: 98 mm (cable cover included);
  • Recommended maximum quantity of suspended sand: 120 g/m3.

If you require any technical assistance then please contact a member of our team on 01706 558 352 or [email protected]. We will endeavour to respond to you as quickly as possible.

ModelkWOutletMax. FlowMax. HeadPrice ex-VAT
QS4P. 1-8 0.25 kW 1 ¼” 1.5 m3/h 50.2 m

£109.97Add to Cart

QS4P. 1-12 0.37 kW 1 ¼” 1.5 m3/h 75.4 m

£138.09Add to Cart

QS4P. 1-18 0.55 kW 1 ¼” 1.5 m3/h 113 m

£171.15Add to Cart

QS4P. 1-25 0.75 kW 1 ¼” 1.5 m3/h 157 m

£210.85Add to Cart

QS4P. 2-5 0.25 kW 1 ¼” 2.4 m3/h 32 m

£90.95Add to Cart

QS4P. 2-8 0.37 kW 1 ¼” 2.4 m3/h 51.2 m

£110.80Add to Cart

QS4P. 2-12 0.55 kW 1 ¼” 2.4 m3/h 76.8 m

£136.44Add to Cart

QS4P. 2-16 0.75 kW 1 ¼” 2.4 m3/h 102.4 m

£154.62Add to Cart

QS4P. 2-24 1.1 kW 1 ¼” 2.4 m3/h 153.6 m

£194.25Add to Cart

QS4P. 3-6 0.37 kW 1 ¼” 4.2 m3/h 33.3m

£105.00Add to Cart

QS4P. 3-9 0.55 kW 1 ¼” 4.2 m3/h 50 m

£123.20Add to Cart

QS4P. 3-13 0.75 kW 1 ¼” 4.2 m3/h 72.2 m

£150.49Add to Cart

QS4P. 3-19 1.1 kW 1 ¼” 4.2 m3/h 105.5 m

£184.39Add to Cart

QS4P. 5-4 0.37 kW 1 ¼” 6 m3/h 24.5 m

£90.12Add to Cart

QS4P. 5-6 0.55 kW 1 ¼” 6 m3/h 36.8 m

£105.00Add to Cart

QS4P. 5-8 0.75 kW 1 ¼” 6 m3/h 49.1 m

£121.55Add to Cart

QS4P. 5-13 1.1 kW 1 ¼” 6 m3/h 79.7 m

£160.44Add to Cart

Download Specification PDF

Standard Shipping UK and Northern Ireland
If you choose this service, the your items should arrive to you the following working day if ordered before 1pm. We will always aim to despatch your goods right away however, if there is a delay in despatching your goods then we will notify you. Once we have despatched your order, you will receive an email notification. Our couriers will endeavour to deliver your goods on time but inevitably there may be delays due to conditions beyond our control. Please be aware that our couriers will deliver between the hours of 7am – 7pm.

Pre-Noon and Pre.10.30am Shipping UK
If you choose a timed delivery service then your goods should arrive to you the following working day by the time specified, i.e. before 10.30am or before 12pm. Deliveries may arrive as early as 7am. Some postcodes are exempt from timed deliveries. Once you have entered your delivery address within the cart, you will be notified of the delivery options available to you.

European Deliveries 
If you require delivery to a location outside of the UK then please contact a member of our team to discuss. We will be able to provide you with an individual quote for your goods based on the delivery address and order weight.

General Delivery Information
In the unlikely event that your goods do not arrive at the time you expected, please contact a member of our team on 01706 558 352 quoting your order number. We will then work with our couriers to provide you with an update as quickly as possible.