BRITA Purity C Quell ST C300 Filter System - 30% Bypass with Install Kit

Improve drink quality, reduce limescale build-up and protect your coffee equipment with this complete BRITA Purity C Quell ST C300 filter system bundle.

The BRITA Purity C Quell ST range is designed for professional applications where water quality matters — including coffee, espresso, vending machines, combi steamers and ovens. It helps reduce carbonate hardness, limescale deposits and unwanted substances that can affect taste, aroma and equipment performance.

This C300 bundle suits busy cafés, commercial coffee and espresso equipment, hospitality sites and vending. For smaller or lower-volume setups the C50 or C150 may be more cost-effective, while the highest-volume sites may prefer the C500 or C1100.

The included 30% fixed bypass head allows part of the water to bypass the hardness-reduction stage, helping retain some mineral content while still reducing scale-forming hardness. This balance is particularly useful for coffee, where water affects taste, aroma and extraction consistency.

Key Benefits

• Helps protect coffee machines, espresso machines and vending equipment from limescale
• Reduces carbonate hardness and other taste- and aroma-affecting substances
• Supports better tasting coffee, espresso and hot drinks
• Includes a 30% fixed bypass head, ideal for many coffee machine applications
• Complete bundle with cartridge, filter head, fittings and tubing
• Rapid-change cartridge system for quick, clean replacement
• Integrated flush valve for easier commissioning and maintenance

What's Included

• 1 × BRITA Purity C Quell ST C300 Filter Cartridge
• 1 × BRITA Purity C Filter Head 3/8" Male, 30% Fixed Bypass
• 2 × John Guest Female Adapter – 3/8" Female BSP x 3/8" Push Fit
• 2 × John Guest Female Adapter – 3/4" Female BSP x 3/8" Push Fit
• 2 × John Guest 3/8" White LLDPE Tubing – 2 Metres

Capacity Guidance

At a typical hardness level of 10°dH / approx. 180 ppm carbonate hardness, the BRITA Purity C Quell ST C300 provides approximately 3,464 litres of filtered water when used with the included 30% fixed bypass head. Actual filter life varies with local water hardness, machine type and water usage.

Ideal For

• Commercial coffee and espresso machines
• Bean-to-cup and office coffee systems
• Busy cafés and hospitality sites
• Vending machines
• Combi steamers and ovens requiring filtered water

Installation Note

This kit includes common fittings used with many commercial coffee and catering installations, but connection requirements vary depending on your machine and existing pipework. Please check your appliance inlet size before installation, or contact us if you are unsure which fittings you need.

Product Specification

Follow the manufacturer’s installation guidance, confirm all connections are secure and flush the product as instructed before regular use.

Order before our dispatch cut-off — 3pm Monday to Friday, or 12pm on Saturday — and your order is sent the same day; anything after that follows the next working day. We don’t dispatch on Sundays, and you’ll get a tracking link by email as soon as your order is on its way.

Choose your UK delivery option at checkout:

• Free Express Delivery — free on orders over £60 (2–3 working days).
• Standard Delivery — £3.99 (2–3 working days).
• Next Day Delivery — £6.99, arriving the next working day when you order before the cut-off.

We also ship internationally, with rates calculated at checkout.

Returns & refunds

Changed your mind? You have 30 days to return any unused filter in its original sealed packaging for a refund, or 90 days for exchanges. Start at our returns portal and either generate a prepaid Royal Mail label (£3.49, deducted from your refund) or use your own courier — exchanges are always free to return. We approve refunds within 24 hours of your return reaching us; your bank may then take 3–5 working days to show the funds.