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Hyco SF3 Speedflow Expansion Vessel & Check Valve

£64.80 £54.00
In stock
Delivery Time:
Next Working Day
Warranty:
1 Year
Quick Code:
12450
Order Line:
01977 663331
  • 15mm single check valve
  • H225mm x D120mm 
  • Capacity 2ltr 
  • Stainless Steel construction

Hyco SF3 Speedflow Expansion Vessel & Check Valve.

The SF3 kit contains a 2 Litre Expansion vessel and check valve to prevent expanded hot water re-entering the cold water supply. The SF3 kit is suitable for use with small unvented water heaters such as the Hyco Speedflow units.

To be used in conjunction with Hyco Speedflow 5L, 10L and 15L unvented (mains pressure) water heaters if a one-way device is fitted that prevents hot water expansion or if there is a cold water off-take too close to the heater. 

  • High quality manufacture
  • Expansion vessel and check valve
  • 2 litre expansion vessel set at 3.5 bar
  • Built to last
  • For use with small unvented water heaters
  • 15mm single check valve
  • H225mm x D120mm
  • Compatible Models: Hyco Speedflow Water Heaters 
  • Capacity 2ltr 
  • Stainless Steel construction

This kit is required if either of the following conditions applies:

1. Presence of device preventing reverse flow
If a one-way device is fitted that prevents hot water expansion, the pressure relief valve would operate routinely on the heating cycle. This is not permissible under Water Regulations. Note that pressure reducing valves, water meters and similar devices are usually one-way and would block expansion.

2. Cold water off-take too close to the heater
It is a requirement to ensure that stored heated water does not mix with drinking water supplies. If there is a cold water off-take very close to the heater there is a risk that the hot and cold water supplies would mix. The minimum distance required between the heater and the nearest cold water off-take is 2.8m for the Speedflow 10L and 4.2m for the Speedflow 15L model.

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