Hyco SF4 Accessory Kit (Vessel, Check Valve and Pressure Reducing Valve)

Hyco SF4 Accessory Kit (Vessel, Check Valve and Pressure Reducing Valve)

( £49.99 inc. VAT)
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  • Capacity: 2L 
  • Expansion Vessel Charge Pressure: 3.5 bar
  • Dimensions: (H)225 x (W)120 x (D)120mm


Kit includes:

  • Pressure Reducing Valve
  • 2L Expansion Vessel 
  • Check Valve




Hyco's accessory kit prevents hot water from re-entering the cold water system which in turn increases the efficiency and reduces energy bills. It also reduces the pressure of the water entering the system in areas where it may exceed 4.2bar.

For use with Speedflow Unvented Undersink Water Heater


Deliveries - 

Our normal delivery days are Monday to Friday excluding Bank Holidays, in most cases your item(s) will be dispatched same day providing we receive your order by 2pm excluding products marked 'Local Delivery Only'. We use reliable carriers such as the Royal Mail and Parcelforce and typically you can expect your item to arrive within 3 working days. However on rare occasions your delivery may take longer due to factors beyond our control.

Return within 14 days.

Refunds –

If you cancel your contract between us within the seven-day cooling-off period we will process the refund due to you as soon as possible and, in any case, within 30 days of the day on which you gave us notice of cancellation. In this case, we will refund the price of the goods in full, (excluding delivery charges). However, you will be responsible for the cost of returning the item to us. Products can only be returned if packaging is not broken and is unworn/ not used.

Faulty or Damaged – 

If a product is suspected to be faulty or damaged, please contact us within 24 hours of receipt and a replacement or refund will be arranged. If a product has been fitted and/or used and is suspected to be faulty, please contact us immediately and we will resolve the issue according to the manufacturers terms and conditions.

Free Delivery on orders over £50 Ts & Cs - 

Large (ugly freight) items are currently excluded from this offer i.e. wheelbarrows, ladders and cement mixers. Deliveries to Ireland, Northern Ireland, and UK Non-Mainland are also excluded.