DAB Salt Water Pumps
DAB MULTI 4 SW – Salt Water Pump
- Established 1975
- Trusted by thousands of customers
MULTI 4 SW is a self-priming multistage surface pump specifically constructed to pump salt water. Low noise and high pressure performance. Available with 4-Noryl impeller.
More about this product
Technopolymer pump body, motor support, impellers, diffusers and diffuser body. All the metal parts in contact with water are made of AISI 316 stainless steel. Rotor shaft, impeller fastening nut. Carbon/ceramic mechanical seal and AISI 316 stainless steel mechanical parts. Continuous service asynchronous single phase motor. Built-in thermal-amperometric protection and permanently connected capacitor.
TECHNICAL DATA
Operating range: capacity up to 90 l/min; head up to 46 m.
Liquid temperature range:
from 0 °C to +35 °C for domestic use.
from 0 °C to +40 °C for other uses.
Pumped liquid: Designed to specifically pump salt water.
Maximum suction capacity: 8 metres.
Maximum ambient temperature: +40 °C.
Protection class: IPX4.
Insulation class: F.
Installation: fixed or portable, horizontal position.
Special versions on requests: alternative voltages and/or frequencies.
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Data Sheet PDFDownload
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Instructions PDFDownload
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the DAB MULTI 4 SW – Salt Water Pump. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What is a water booster pump?
A water booster pump increases the pressure of an existing water supply to give stronger flow at taps, showers and appliances. It can be a small inline pump fitted to the incoming mains, or a larger pump and tank set that draws from a break tank to feed the whole house. Boosters do not create water – they raise the pressure of the water already coming in.
What is the difference between an inline booster and a tank-and-pump booster?
An inline booster connects straight onto the incoming mains and is limited to 12 litres per minute under UK water regulations – examples include the Salamander HomeBoost and WaterBoost WB-Compact. A tank-and-pump booster, such as the Grundfos Home Booster or DAB Esybox with Esytank, draws from a break tank and can deliver much higher flow rates for larger homes with multiple bathrooms.
What is a variable speed booster pump?
A variable speed booster uses an inverter to adjust pump speed in real time to match demand. It maintains constant pressure as outlets open and close, runs more quietly than a fixed-speed pump and typically saves up to 50 per cent of the energy a fixed-speed equivalent would use. The DAB Esybox, DAB Esybox Mini 3 and Grundfos Scala2 are common variable speed examples.