Title
Secoh JDK-S-300 Twin Series Diaphragm Blower (EL-S-300)
Secoh JDK-S-300 Single Series Diaphragm Pump

Secoh JDK-S-300 Twin Series Diaphragm Blower (EL-S-300)

SKU: BLOBLOWSEC008

£620.00

(excluding VAT)
Quantity

Order before 3 PM for next working day delivery on in-stock products & spare parts.

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The Secoh Twin Series JDK-S-300 is a direct replacement of the EL-S-300 featuring less energy consumption (up to 30% - depending on the application) and less overall dimensions (also by about 30%) compared to the SLL- and EL-series. This makes the class not only more compactly, but also lighter. The JDK-S-300 also comes with a pre-set pressure relief valve.

Long life expectancy
Motor and pump parts are combined in one single construction. The compact and light construction form and the simple mechanism guarantee a long and reliable period of operation.

High degree of efficiency
The principle of electromagnetic oscillation, which practically has no mechanical friction, minimises power consumption and provides a high degree of efficiency.

Low noise level
The soundproof casing and the muffler integrated in the tank base reduce operating noise.

Low vibration
Motor and pump parts are separated by a vibration-isolating rubber, so only low vibration consists.

Completely oil-free
The oil-free operation guarantees a dry and unadulterated air flow.

Pulsation-free air flow
Specially formed pump chambers and the muffler integrated in the tank base provide an air flow, which is practically pulsation-free.

Weatherproof
The SLL, EL and JDK series are rainproof and weatherproof. However, they should not be exposed to direct sunlight, rain or snow.

Universal service kits
For each model series service kits are available. They are vacuum-packed in aluminium foil for better and longer life/ storage.

JDK-S-300 Installation Tips


  • Ensure that the air pump is receiving a clean, fresh air supply.
  • If you have recently had a pump fail check the back pressure on the pump.  We can supply pressure gauges so you can do this
  • Ensure your pump is not liable for flooding.  It is an electrical device and whilst rainproof, is not waterproof
  • Ensure that the tubing pipe diameter is kept as close to the pump outlet as possible.  This will reduce any artificial pressure, which may reduce the lifetime between diaphragm changes.
  • If using for an aquatic application with small-bore manifolds leave at least one tap fully open, venting into the water, this will help any pressure known to be created by aquatic air stones.
  • Clean the filter regularly.  Annually as a minimum, more frequent if you suspect ingress of dirt

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FAQ

What kind of products does Waterwise Pumps sell?

Waterwise Pumps specialises in clean water solutions designed for domestic, commercial, and trade applications. Our product range focuses on the safe storage, movement, treatment, and aeration of clean and potable water.


We supply water filtration and purification systems to help improve water quality, alongside potable and clean water storage tanks manufactured from approved materials suitable for drinking water use. These solutions are ideal for residential properties, site welfare, agriculture, commercial buildings, and emergency water storage.

In addition, Waterwise Pumps offer a wide range of electrical and supporting components, including air blowers and related equipment, used in water treatment, aeration, and system performance applications. Our products are selected for reliability, compliance, and long‑term performance, supporting both standalone installations and fully integrated water systems.

What is the delivery policy?

In-Stock Spare Parts: Orders placed before 3pm on a working day will be dispatched the same day. The orders are shipped via DPD next-day delivery for £8.20. Any in-stock spare part order over £500 will face an additional charge of £7.50 to cover additional insurance.
Supplier Spare Parts: Any orders for supplier spare parts will be processed the same working day once an order has been received. Delivery charges for these products start from £20. As these parts are dispatched directly from our suppliers, lead times can differ, and confirmation can be provided if required.
Tank Orders: Tank deliveries are handles separately due to their size and handling requirements. Delivery charges may range from free delivery to a delivery charge, depending on brand or tank. Lead times vary by product and manufacturer, and delivery is made on specialist transport. All tank deliveries are kerbside unless otherwise arranged. It is the buyers responsibility to offload the tank.

Do our prices include VAT?

All products on the Waterwise Pumps website are listed exclusive of VAT. VAT is calculated and added automatically at checkout, based on the applicable UK VAT rate, before payment is taken.


This approach allows our pricing to remain clear and consistent for both trade and domestic customers, while ensuring the correct VAT amount is applied to every order. You will always be able to review the full order total, including VAT, before completing your purchase.


If you have any questions about VAT, invoicing, or pricing, our team is happy to assist.

Need help with your order?

No problem — we’re here to help. Speak to our friendly team on 01872 228447 or drop us an email at enquiries@waterwisepump.co.uk and we’ll get things flowing.