Contexa - Automation systems for liquids and powders
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The simple and reliable valves for large production


Contexa SA has a large experience in volumetric and gravimetric dosing of liquids and powders.
The TEX valves are a gravimetric dosing system for liquids. The raw materials are weighed.
The raw materials are stored on a mezzanine.
A production formula is prepared in about 10 minutes on the TEX valves.
"Because the production time of a formula needs to be short and that the space at disposal is often restricted, we have designed a high performing and compact valve."

Main characteristics

  • Ideal for small to large production for formulas of a few kilograms to 1'500 kg (3'300 lb)
  • Production of formulas of 100 kg (220 lb) in about 10 minutes
  • Entirely adaptable linear flow. Opening possible between 0 and 100%
  • 30% productivity increase through automatic adaptation of the flow
  • Adapted for the dosing of fluid, viscous, heated and cooled-off materials
  • Pneumatic or mechanic actuation 60 valves per cluster

Technical specifications

  • Materials in dynamic contact with chemicals:
     - Stainless steel, Kalrez or PTFE
  • Dimensions of a 60 valves cluster:
     - Diameter 600 mm (23.62 in) / Height: 959 mm (37.76 in)

0 to 4m3 per hour valve

  • Minimum dosed weight: 50 g (0.11 lb)
  • Accuracy: +/- 5 g (0.01 lb)
  • Average weight of a cluster: 1'250 kg (2'755 lb)

0 to 15m3 per hour valve

  • Minimum dosed weight: 2'000 g (4.41 lb)
  • Accuracy: +/-200 g (0.44 lb)
  • Average weight of a cluster: 2'050 kg (4'519 lb)


  • ATEX zone 1 (class I, div 1)
  • Addition of manual valves on cluster for hand-dosing and/or refilling of the storage
TEX valves, the absolute performance
from small to large production