Flamco

Built for sealed heating (EN 12828) and chilled-water systems, Flexcon Premium Expansion Vessels stabilise system pressure by absorbing thermal expansion so plant runs safely and efficiently.

A new TPO (thermoplastic polyolefin) diaphragm on 1235 Ltrs models delivers high flexibility and extremely low permeability, helping the pre-charge hold for longer. Lighter construction cuts material use and transport emissions; packaging is FSC-certified to reduce CO₂ impact.

• Sustainable design lighter TPO membrane uses up to 50% less material
• Long service life 15-year warranty
• Low permeability pre-charge pressure maintained for longer
• Heating & cooling suitable for LPHW and CHW installations

Vessels comply with EN 13831 and the Pressure Equipment Directive 2014/68/EU. Red epoxy powder coating (RAL 3002). Flexcon Premium 3580 are supplied with feet and a mounting kit.

Built for sealed heating (EN 12828) and chilled-water systems, Flexcon Premium Expansion Vessels stabilise system pressure by absorbing thermal expansion so plant runs safely and efficiently.

A new TPO (thermoplastic polyolefin) diaphragm on 1235 Ltrs models delivers high flexibility and extremely low permeability, helping the pre-charge hold for longer. Lighter construction cuts material use and transport emissions; packaging is FSC-certified to reduce CO₂ impact.

• Sustainable design lighter TPO membrane uses up to 50% less material
• Long service life 15-year warranty
• Low permeability pre-charge pressure maintained for longer
• Heating & cooling suitable for LPHW and CHW installations

Vessels comply with EN 13831 and the Pressure Equipment Directive 2014/68/EU. Red epoxy powder coating (RAL 3002). Flexcon Premium 3580 are supplied with feet and a mounting kit.

Built for sealed potable hot and chilled water systems in domestic and commercial settings, these Potable Water Expansion Vessels stabilise pressure by absorbing thermal expansion for safe, reliable operation.

A nitrogen pre-charge helps retain set pressure longer, while a single threaded steel connection with plastic insert provides a durable, non-flow-through design. Suitable for central heating, cooling and tap water applications (not for solar collector circuits).

• Nitrogen gas filling for longer pre-charge retention
• Single threaded steel connection with plastic insert (no flow-through)
• Potable use supports domestic hot/chilled water
• Heating & cooling compatible for sealed systems

Designed for long service life with broad operating limits and glycol tolerance for demanding installations.

Blending top-up pressurisation with on-demand chemical dosing, the Flamco PressDS 225D Twin Pump maintains stable pressure on sealed systems while automatically mixing inhibitor from a dedicated tank at a preset ratio.

This floor-standing unit features a 4 Ltrs mains-fed break tank and an 18 Ltrs additive reservoir. Each top-up delivers water and the correct fluid blend together, cutting site visits and maximising system protection. Ideal for commercial and industrial plant (guide volume up to 300,000 Ltrs).

• Dual pump duty/standby configuration
• Mix control user-set from 150%
• Top-up to < 18 L/min; max delivery 3 Bar
• Category 5 (Type AB weir overflow) protection

Integration is simple via MODBUS RTU, password-protected menus and volt-free contacts, with flood protection, service reminders and additive-empty alerts built in. Finished in black (RAL 9005).

Blending top-up pressurisation with on-demand chemical dosing, the Flamco PressDS 250D Twin Pump maintains stable pressure on sealed systems while automatically mixing inhibitor from a dedicated tank at a preset ratio.

This floor-standing unit features a 4 Ltrs mains-fed break tank and an 18 Ltrs additive reservoir. Each top-up delivers water and the correct fluid blend together, cutting site visits and maximising system protection. Ideal for commercial and industrial plant (guide volume up to 300,000 Ltrs).

• Dual pump duty/standby configuration
• Mix control user-set from 150%
• Top-up to < 18 L/min; max delivery 6 Bar
• Category 5 (Type AB weir overflow) protection

Integration is simple via MODBUS RTU, password-protected menus and volt-free contacts, with flood protection, service reminders and additive-empty alerts built in. Finished in black (RAL 9005).

Blending top-up pressurisation with on-demand chemical dosing, the Flamco PressDS 280D Twin Pump maintains stable pressure on sealed systems while automatically mixing inhibitor from a dedicated tank at a preset ratio.

This floor-standing unit features a 4 Ltrs mains-fed break tank and an 18 Ltrs additive reservoir. Each top-up delivers water and the correct fluid blend together, cutting site visits and maximising system protection. Ideal for commercial and industrial plant (guide volume up to 300,000 Ltrs).

• Dual pump duty/standby configuration
• Mix control user-set from 150%
• Top-up to < 18 L/min; max delivery 3 Bar
• Category 5 (Type AB weir overflow) protection

Integration is simple via MODBUS RTU, password-protected menus and volt-free contacts, with flood protection, service reminders and additive-empty alerts built in. Finished in black (RAL 9005).

Purpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package.

A pressure-step degassing process—using a controlled pressure drop and patented PALL-ring media—removes dissolved gases even at equilibrium. A replaceable butyl bladder stores the expansion fluid at atmospheric pressure. Supplied with Flexvent Super, height-adjustable feet and a weight-capacity sensor.

• All-in-one functionality — expansion, pressurisation, deaeration and make-up
• Pressure-step deaeration with PALL-ring technology
• Replaceable butyl bladder — easy maintenance and long service life
• Delivered complete — Flexvent Super, adjustable feet, weight-capacity sensor

Designed for commercial, industrial and residential sealed LPHW/CHW installations requiring efficient air removal and stable operating pressures.

Engineered for EN 12828 heating and chilled-water systems, Flamcomat FB Auxiliary Vessels provide additional, pressureless expansion capacity to stabilise sealed system pressures.

Used alongside the Flamcomat FG module, the FB vessel stores expansion fluid at atmospheric pressure inside a replaceable butyl bladder. The wider Flamcomat system employs a pressure-step degassing method with patented PALL-ring media for effective dissolved gas removal. Supplied with Flexvent Super and height-adjustable feet.

• Pressureless auxiliary vessel — increases system expansion volume
• Replaceable butyl bladder for easy maintenance
• Atmospheric storage of expansion fluid inside the bladder

Suitable for systems with a maximum operating temperature of 120 °C (note: additional requirements may apply above 110 °C). Bladder maximum temperature 70 °C.

Purpose-built for solar thermal circuits, the Flexcon Solar 8/2.5 [8Bar] expansion vessel supports sealed systems in line with EN 12828, keeping pressure stable in high-temperature applications.

A preformed butyl rolling diaphragm with extremely low permeability helps retain pre-charge, while a nitrogen fill limits corrosion and pressure loss. The clench ring clamps the diaphragm evenly to prevent damage, and a ribbed profile avoids sticking for instant inflow. An uncoated connection thread aids watertight installation; the steel vessel is finished in a gleaming epoxy-powder coat and factory tested.

• Solar-ready expansion vessel for sealed systems
• Butyl rolling diaphragm with very low permeability
• Nitrogen pre-charge for longer pressure stability
• Clench ring construction for a robust, uniform seal

For 880 Ltrs models: both halves are coated before assembly to protect the clamp ring, and the nitrogen valve is countersunk and covered. Continuous medium temperature range −10 to 110 C.