Expansion vessels

Pressure and expansion vessels are an essential part of modern heating, water supply, and solar systems. Their main task is to maintain stable pressure and absorb volume changes in water during heating or pumping, thereby protecting pumps from frequent switching, reducing the risk of pipe damage, and ensuring long-term reliability of the entire system.

See more information

Our range covers:

Cold water vessels – ideal for domestic waterworks and booster stations, with certified bags for safe use with drinking water.
Hot water and DHW vessels – with surface treatment and materials resistant to high temperatures and corrosion.
Expansion vessels for heating – designed for optimal compensation of water volume changes at normal operating temperatures and pressures of heating systems.
Special vessels for solar systems – resistant to higher temperatures and pressures occurring in solar circuits.

The range also includes replacement bags and flanges, which allow for easy and economical maintenance without the need to replace the entire vessel.

Before choosing a vessel, we recommend that you familiarize yourself with our detailed instructions:

How a cold water pressure vessel works – understand how to size it correctly and what affects the pressure
How a hot water pressure vessel works – what to look out for with DHW, where the temperature is higher
What to look out for – Legionella in the system – important information about hygiene and bacteria prevention

Technical parameters to focus on:

Vessel volume – determines how much water it can hold and how well it compensates for pressure surges
Maximum and minimum working pressure – must correspond to your system and pump
Material and construction of the bladder – most often butyl rubber with drinking water certification, resistant to heat and chemicals
Surface treatment of the tank – anti-corrosion coating or enamel for longer life

Found: 37 products

Global Water Solutions

GWS C2-Lite CA - composite maintenance-free pressure tanks

New Drinking water certificate Extended warranty

Variant Product No.

Availability

Price (VAT incl.)

Global Water C2B-60LV standing pressure vessel 60l 8.6bar 1" 49°C

Product No.: ZB00071630 Sale group: TLGW Manuf. No.: C2B-60LV

432.65 €

Expansion vessels

Category

GWS C2-Lite CA - composite maintenance-free pressure tanks

GWS PressureWave PWB-LH maintenance free horizontal expansion vessels

GWS PressureWave PWB-LV maintentenance free vertical expansion vessels

GWS PressureWave PWB-LX small expansion vessels 2-35L

GWS Max high pressure maintenance free pressure tanks

GWS Challenger GCB maintentenance free vertical expansion vessels

GWS FlowThru CFB composite expansion vessels

GWS Thermowave TWB maintentenance free expansion vessels

PUMPA TNP Vertical Pressure Tanks with Replaceable Bladder

Pressure booster pumps set with horizontal GWS vessel

PUMPA TNP Horizontal Pressure Tanks with Replaceable Bladder

Pressure booster pumps set with vertical GWS vessel

PUMPA horizontal expansion vessels with interchangeable membrane

PUMPA vertical expansion vessels with interchangeable membrane

CIMM AF CE 24 l G1"

CIMM AFC CE 24 l G3/4"

CIMM AFOSB CE 24 l G1"

CIMM AFESB CE 50-200 l

CIMM AFE CE 35-2000 l

CIMM AFC-AFE/CAR CE 16 bar 18-300 l