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Sunex Filling and Flushing Station – Mobile Unit for Solar, Underfloor and Wall Heating Systems


The Sunex filling and flushing station is a professional tool for filling, flushing, and maintaining closed systems – such as solar thermal systems, underfloor heating, or wall heating. Its robust construction, powerful pump, and well-thought-out design make it the perfect choice for installers and service technicians.


Technical data:

  • Tank volume: 25 liters (polyethylene with suction strainer)
  • Pump power: 230 V / 50 Hz, 1200 W
  • Maximum delivery head: 48 m
  • Maximum flow rate: 63 l/min
  • Max. media temperature: 35 °C
  • Medium: Water or water-glycol mixture (e.g., 50/50)
  • Connections:
  • Check valve: ½
  • Drain valve: ½
  • Shut-off valves: ¾
  • Dimensions (H x W x D): 920 × 430 × 470 mm
  • Weight (empty): 17 kg
  • Housing: Powder-coated steel frame on sturdy wheels
  • Special features:
  • Transparent pressure hoses for backflow control
  • Ball valves on the connecting hoses
  • Hose holder


Areas of application:

  • Initial filling and flushing of solar collector systems
  • Maintenance and flushing of underfloor heating systems
  • Exchange of heat transfer fluids
  • Service calls for closed heating circuits


Note: Solar thermal systems must not be filled during direct sunlight – risk of thermal damage!

** Average Wholesale Price

Legal guarantee

Harmonised EU legal guarantee notice

Minimum two-year legal guarantee protection for goods sold in the European Union.

Consumers can claim their rights under the legal guarantee of conformity, for example if goods:

  • do not match the description;
  • do not function as intended.

Sellers are liable for any lack of conformity which existed when the goods were delivered, and which becomes apparent within the legal guarantee period. Sellers in such a situation are required to offer:

  • free repair or free replacement;
  • in some cases, a price reduction or full reimbursement.

Some countries have a longer legal guarantee period. For second-hand goods, a shorter period may apply, but not less than one year.

What to do if you receive non-conforming goods:

  1. Contact the seller as soon as possible to report the issue;
  2. Provide proof of purchase, such as a receipt, invoice, or bank statement.

Sellers and producers may also offer commercial guarantees, which apply independently from the legal guarantee. For example, you may see this GARAN label representing a commercial guarantee of durability offered by the producer at no additional cost and covering the entire good.

For more information on your rights in a specific country, visit the page below or ask the seller. https://europa.eu/youreurope/guarantees