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LK Armatur

LK Armatur is a leading producer in Europe, manufactures millions of valves per year for the global HVAC market. Our solutions are based on a comprehensive view of how valves, control units, components and prefabricated products work together.
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LK Systems

LK Systems is the leading manufacturer of easy-to-install systems for heating and tap water distribution and pre-insulated pipes in the Nordics. Through our prefabrication factory, we also provide tailor-made solutions that simplify the installation process even further.
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LK Pex

Our PEX Pipe Extrusion business area is an innovative manufacturer of high-quality plastic pipes for the heating and plumbing industry. Our core is the efficient, high-technology production process for crosslinked PE-Xa pipes, resulting in products with a unique combination of flexibility and hydrostatic strength.
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LK Group

LK is a family-owned trading and production group, operating on a global scale within the HVAC-area. We are the market leader in Sweden and has an increasing sales of products, systems and solutions in the Nordic countries, Europe and the USA.
- Svenska
- English

LK Armatur

LK Armatur is a leading producer in Europe, manufactures millions of valves per year for the global HVAC market. Our solutions are based on a comprehensive view of how valves, control units, components and prefabricated products work together. Svenska English Deutsch Italiano Yкраїнська Suomi
LK Systems

LK Systems is the leading manufacturer of easy-to-install systems for heating and tap water distribution and pre-insulated pipes in the Nordics. Through our prefabrication factory, we also provide tailor-made solutions that simplify the installation process even further. Svenska English Norsk Suomi
LK Pex

Our PEX Pipe Extrusion business area is an innovative manufacturer of high-quality plastic pipes for the heating and plumbing industry. Our core is the efficient, high-technology production process for crosslinked PE-Xa pipes, resulting in products with a unique combination of flexibility and hydrostatic strength. English
LK Group

LK is a family-owned trading and production group, operating on a global scale within the HVAC-area. We are the market leader in Sweden and has an increasing sales of products, systems and solutions in the Nordic countries, Europe and the USA. Svenska English

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ACS Z Expansion Vessel

ACS Z Expansion Vessel

Pressuriser in tapwater systems, cooling water tank for the primary side in heat pump systems, etc.

Variants
Detailed Information
Documentation
Questions & Answers

Variants

Detailed Information

Description

Pressuriser in tapwater systems, cooling water tank for the primary side in heat pump systems, etc.

Expansion vessels must be installed according to instructions in VVA 93. The expansion vessel is inspected visually prior to installation.

The expansion vessel does not require maintenance. Air valve must be provided with protective covering.

Technical Data

Working temperature:	Min. -10 °C / Max. 70 °C
Media:	Water - Glycol mixture max. 50% Ethanol mixture max. 30%
Material:	Closed expansion vessel in steel Internal diaphragm Liquid-separating rubber blister: 2-12 lit. - Butyl 16-24 lit. - EPDM according to DIN 4807 Fluid-contact connection 2-12 lit. - galvanised steel/ PP 16-24 lit. - stainless steel/PP
Other data:	Surface treatment Epoxy powder paint, RAL 9006 light grey metallised

Documentation

Product sheet

ACS Z Expansion Vessel

Questions & Answers

Which expansion vessel should I buy?

If your expansion vessel connection is located on the long side, you should choose expansion vessel article number: 064010. If your expansion vessel connection is located on the short side, you should choose expansion vessel article number: 5523321

12 June 2026