Unvented cylinders are designed to work at a high pressure and offer superior flow rates. This is beneficial for as it allows high water pressure for a power shower and the ability to feed several outlets. We manufacture unvented cylinders in both copper and stainless steel which both offer their own unique advantages.
Unvented cylinders have no need for a cold water feed tank and with it being supplied directly from mains water, it offers far greater flexibility than a traditional vented unit. With the unit not requiring a gravity feed or pump it can be placed anywhere in the premises.
Unvented cylinders also have the flexibility to work on a wide variety of systems; they can be fitted with coils for solar heating, heat pumps and underfloor heating. As all units are manufactured in house, they can be made to bespoke customer specifications such as tapping size and positioning.
A range of standard sizes and formats is available in the Size and Specification tab. Alternative heights from 600mm to 2000mm and diameters from the list are also available where space and water volumes are at a premium.
Stainless Steel Cylinders
|Pressure Reducing Valve - Max Inlet||12 BAR|
|Operating Pressure||3 BAR|
|Expansion Vessel Charge Pressure||3 BAR|
|Expansion Relief Valve Setting||6 BAR|
|Pressure & Temperature Relief Valve - Pressure Setting||7 BAR|
|Pressure & Temperature Relief Valve - Temperature Setting||90°C|
|Energry Cut-out Thermostat Setting||80°C
|Primary Heat Exchanger - Max Working Pressure||6 BAR|
|Solar Heat Exchanger - Max Working Pressure||6 BAR|
|Immersion Heater Rating||3Kw - 240V AC|
|Primary Max Working Pressure||3.5 BAR|
|Pressure Reducing Valve Pre-Set||2.1 BAR|
|Expansion Relief Valve||3.5 BAR|
|Combined Temperature & Pressure Reducing Valve||4.5 BAR|
|Max Working Pressure||3.5 BAR|
|Max Water Pressure (Before PRV)||12 BAR|
|Immersion Heater Rating||3kw 240V AC|
Tools & Calculators
The sizes we specify are not an absolute list and we are capable of making units a variety of different sizes. This calculator can be used to determine the aproximate volume of a unit.