Venturi 3S unvented cylinder technology

The Plumbing Group are at the forefront of water heating technology, we are changing the way you think about water heating installation with our Venturi 3S Technology which replenishes the internal expansion device permanently, creating the World’s first ‘Self Sustaining System’.

There is no need for recharging. This patented device is the latest development in the expansion technology. The convenience of the internal expansion device is provided without having to service and recharge. This is of course a huge improvement to unvented water heating installations.

Problems with expansion in existing unvented systems

External expansion

External expansion

 

✘ Bulky, has more parts, requires more space

✘ Requires longer on-site installation

✘ Needs replenishment

✘ Risk of legionella through expansion pipe ‘dead leg’

Internal expansion

Internal expansion

✘ Integrated air bubble

✘ Needs frequent replenishment

✘ Takes only low pressure

 

 Protected Internal expansion

Protected Internal expansion

✘ Integrated air bubble

✘ Protected with a plastic baffle

Could need replenishment as baffle seal is not fully 100%

 

How Venturi 3S unvented cylinder technology works

3S technology uses fluid dynamics to create negative pressure known as the ‘Venturi effect’. Using precision design this configuration draws enough air to recharge the air gap as the tank is filled and requires no future maintenance – a truly self-sustaining system.

 

Venturi 3S unvented cylinder technology key features

✓ No replenishment or external expansion required

Long life with no moving parts

60mm environmentally friendly foam

3 bar water pressure at the outlet (subject to incoming pressure)

Positive stated water volume tolerance ensuring maximum available water at any given time.

‘Hi-Flow’ in 400 & 500l indirect models 28mm inlet/outlet & 28mm for higher flow rates

25-Year cylinder and 3-Year parts warranty

Direct & Indirect Models

Sizes 80L to 500L capacity

Cylinders are 100% CFC/HCFC free

Pre-installed with no additional parts required.

All sizes WRAS approved

Designed & manufactured in the UK

Venturi VXI

Direct Unvented Cylinder (No expansion vessel required)

Venturi VXI Direct Unvented Cylinder

Click here for the Venturi VXI 3S Direct

Venturi VXI

Indirect Unvented Cylinder (No expansion vessel required)

Venturi VXI Indirect Unvented Cylinder

Click here for the Venturi VXI 3S Indirect

 

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