The Refix DE 500 diaphragm expansion vessel is designed for water supply installations that are not subject to DIN 1988 requirements, making it suitable for specialist systems such as fire extinguishing installations, service water systems

The Reflex N 500 diaphragm expansion vessel is designed for sealed heating and cold water systems, providing reliable pressure control in closed-system installations.

Zilmet Ultra-Pro Vertical Expansion Vessel - 10 Bar. - 300Ltr Zilmet ULTRA‑PRO pressure vessels are designed for high‑performance potable water and booster systems where reliability and.

Zilmet Ultra-Pro Vertical Expansion Vessel - 10 Bar. - 500Ltr Zilmet ULTRA‑PRO pressure vessels are designed for high‑performance potable water and booster systems where reliability and.

Zilmet Ultra-Pro Vertical Expansion Vessel - 16 Bar. - 500Ltr Zilmet ULTRA‑PRO pressure vessels are designed for high‑performance potable water and booster systems where reliability and.

Zilmet Hydro-Pro Vertical Expansion Vessel - 10 Bar. - 500Ltr Zilmet HYDRO‑PRO pressure vessels are designed for potable water and booster systems where stable pressure and efficient pump.

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.

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.

Buy Flamco Flacomat FG Vessels from Pumpify and receive free standard delivery.

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.

Flamco Flexcon M Expansion Vessel - 500Ltr - 3-6 bar. - Tailored for sealed heating and chilled-water systems, the Flexcon M 100/3.0 [6Bar] is a replaceable-bladder expansion vessel designed to stabilise pressure in accordance with EN 12828.

It excels where static pressure and safety-valve setpoint differ significantly, helping maintain pre-pressure while minimising cycling. Supplied ready to install with a pressure gauge and height-adjustable feet, plus an inspection flange for servicing.

• Replaceable butyl bladder for fast maintenance
• Pressure gauge and height-adjustable feet included
• Inspection flange for internal access
• Robust steel vessel with durable epoxy-powder finish
• Uncoated connection thread for easy, watertight installation

For larger models (12008000 Ltrs), a Flexvent Super can be fitted to enhance air removal.

Built for sealed heating and chilled-water circuits, the Flexcon M [10Bar] is a replaceable-bladder expansion vessel designed to stabilise system pressure in line with EN 12828.

It excels where static pressure and safety-valve setpoint differ significantly, helping maintain pre-pressure while reducing cycling. Supplied with a pressure gauge, height-adjustable feet and an inspection flange for straightforward servicing.

• Replaceable bladder for fast maintenance and long service life
• Delivered ready to install: gauge and adjustable feet included
• Inspection flange for internal access
• Robust steel vessel with durable epoxy-powder finish

Larger Flexcon M models (12008000 Ltrs) can be fitted with a Flexvent Super for enhanced air removal.

The accumulator vessel is a device that fitted into a pressurised water system will provide system water at a pre-set sustained pressure. This product is manufactured by Elbi. Its most common application is to supply systems in which the main supply pressure is too low and a pump is fitted to boost the pressure to an acceptable level. As system demands take place the accumulator vessel will sustain system pressure by feeding additional water into the system at the required pressure. This process will limit the number of times the pump needs to start (pump hunting) in order that system pressure remains at the optimal level.

The Elbi AFV 500 Litre Vertical Accumulator Pressure Vessel- 500 Ltr - 8 bar. is a Pressure Vessel item.

The operating pressure of this is 8 bar.

The MikroPro Expansion Vessels range serves almost any LPHW or CHW system, with capacities from 8500 Ltrs. Models up to 25 Ltrs are wall-mounted, while 35 Ltrs and above are floor-standing. This is a floorstanding vessel.

With an 500Ltr capacity with an operating pressure of 6 Bar., this is built for performance, reliability and compliance, MikroPro vessels are PED 97/23/EC compliant, rated to a maximum operating temperature of 70 C, and available with pressure ratings of 3 Bar (835 Ltrs) or 6 Bar (501000 Ltrs). Threaded connections and a durable powder-coated finish simplify installation and maintenance.

• Capacities: 8500 Ltrs
• Mounting: wall (≤25 Ltrs) or floor (≥35 Ltrs)
• Ratings: up to 70 C, 36 Bar (model dependent)
• Applications: heating and chilled water systems

A versatile, robust choice for commercial and large domestic systems requiring stable expansion capacity and long service life.

MikroPro Potable XP Expansion Vessel - 500 Litre Capacity - 10 bar. This range serves heating, chilled and potable (drinking) water systems, with capacities up to 500 Ltrs to suit a wide variety of installations for commercial or residential. This item comes without a wall mount bracket.

Built for hygiene and durability, all internal surfaces in contact with water are corrosion-protected for potable use, and models from 50–500 Ltrs feature a replaceable diaphragm for straightforward maintenance.

• Capacity options: 12–500 Ltrs
• Rated pressure: up to 10 Bar
• Potable-safe construction: coated internal wetted surfaces
• Serviceable design: replaceable diaphragm (50–500 Ltrs)

Vessels are PED 97/23/EC compliant, rated to 70 °C, and supplied with threaded connections and a durable powder-coated finish for long service life.

Vessels to protect Flexcon expansion vessels on elevated temperature systems. The vessels are fitted in between the expansion vessel and the system return. System water flows from the installation into the top of the vessel. From the bottom of the vessel, significantly cooler water is fed into. Capacity 500 Ltr.