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allSTOR buffer cylinders

Compatible with the Vaillant heat pump range

  • Extended range of buffer cylinders up to 2000 litres
  • Can be cascaded for larger projects
  • High levels of insulation for maximum efficiency
  • Buffer cylinders includes internal baffle/deflector plates
Request a quote


The allSTOR buffer cylinder range consists of six cylinders - ranging from 300 to 2000 litres, which can be cascaded for even greater capacities and flexibility during installation.

The Vaillant range of allSTOR buffer cylinders compliments our flexoTHERM heat pump range as they allow them to operate efficiently, ensure continuous supply even in ‘off’ periods and allow running times of the heat pump to be extended.

Features and benefits:

  • Extended range of buffers up to 2000 litres - Compatible with all heat sources and meets the requirements for domestic and commercial systems
  • High levels of insulation - Minimised heat loss achieving ErP ‘B’ rating
  • New slimline dimensions for smaller cylinders - Greater flexibility for a range of site locations
  • Inline connections - Simple and neat installation
  • Clip on insulation - Easier and lighter to handle in smaller sections and giving greater flexibility during installation
  • Internal baffle/deflector plates - Improves circulation and layering within buffer cylinder
  • Buffers can be installed in cascade - Greater capacity to cater for larger projects



Technical dataUnitVPS 300/3VPS 500/3VPS 800/3VPS 1000/3VPS 1500/3VPS 2000/3
Cylinder tank capacity l30349177896215051917
Heating water temperature°C95
Cylinder tank depth (incl. heat insulation and connections)mm8289781118111814481548
Cylinder tank depth (incl. purging valve and positioning ring)mm173517151846222622052330
Buffer cylinder height (incl. heat insulation)mm183318131944232423622485
Cylinder tank weight (empty)kg7090130145210240
Cylidner tank weight (full)kg373581908110717152157
ErP ratingbandB

Related Products

Related Products

flexoTHERM ground source heat pump

  • MCS accredited and Quiet Mark approved*
  • Suitable for domestic and commercial properties
  • ErP rated A+++ when installed with VRC 700 or VRC 700f

aroTHERM air source heat pump

  • MCS accredited
  • Suitable for domestic and commercial properties
  • Blue fin coated evaporator as standard

geoTHERM ground source heat pump

  • MCS accredited and Quiet Mark approved
  • Suitable for large domestic and commercial properties
  • Energy yield display

geoTHERM mini ground source heat pump

  • MCS accredited
  • Suitable for specification in the social housing and new build developments
  • Provides both heating and hot water


How to get

Request a quote

Vaillant renewable products and accessories are available over the counter or as a next day service at most plumbing and heating merchants throughout the UK.

We can provide you with bespoke solutions to accommodate a variety of installations. To discuss your requirements please contact us.