PSP Buffer Tank


A 100 L buffer store designed to be mounted under a ground source heat pump which stores energy for the defrost cycle and reduces compressor cycling. Supplied with factory fitted insulation for minimal heat loss.

The inner vessel is carbon steel container so must therefore be used with inhibitor.

General information

Uniclass 2015

Pr_60_50_20_10 Buffer vesselsPrimary

Specification data - Buffer vessels

Product Reference


Size: (h x d x w): 550 x 653 x 650 mm.


Size (h x d x w): 600 x 850 x 750 mm.


Size (h x d x w): 870 x 870 x 1000 mm.

Standard product features

Technical characteristics:

  • Capacity: 100 L./ 140L / 300L.
  • Immersion heater inserts: 1½" FPT.
  • Heating water flow and return: 1 1/4" FPT.
  • Maximum permissible operating temperature, heating water: 95°C.
  • Maximum permissible working pressure, heating water: 3 Bar.
  • Maximum heat output per element: 7.5 kW.

Third party certifications

  • CE

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