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Flow indicators, examples No.1-3

Wherever media flow has to be displayed optically, but not measured, flow indicators are applied. The flow indicators are used for showing streams in low viscous fluids, gas and fumes. All following indicator types are fitted out with the secure head screw connection. Excluding an inadmissible bracing of the sight glass, this types are an optimal choice for hard operations in industry.

No. 1    rotary triangle
              screwed connection

Media flow is indicated by a rotary triangle located directly underneath the sight glass (paddle wheel flowmeter).

  • very noticable triangle, even in low transparent flow media
  • easy fingertipped sapphire peak bearing even for small flows, by that a secure start-up and operation; high operating time based on a long bearing lifetime
  • very good indication of gas streams, for no lubrication of the bearing is necessary
  • standardized for horizontal mounting
  • threaded connection: G to G1, or L18 to L22
  • housing material: brass, steel, high-quality steel
  • working range (fluids): 30L/hr to 4000L/hr, divided in 4 flowing ranges
  • maximum nominal pressure: PN64
  • maximum operating temperature: 100C

No. 2    rotary ball
              screwed connection

Here, the stream is indicated by rotation of one or several balls underneath the sight glass.

  • extraordinary robust industrial construction, since only the ball is moved and no bearings are needed
  • vertical or horizontal installation into the duct
  • excellent chemical durability by disposition of a PTFE-ball and housing material, respectively
  • being installed into the wrong mounting direction, no flow blockage is yielded
  • threaded connection: G to G2, or L18 to L22
  • housing material: brass, steel, high-quality steel, salt-water-proofed duplex material
  • working range (fluids): 30L/hr to 8000L/hr, divided in 5 flowing ranges
  • maximum nominal pressure: PN64
  • maximum operating temperature: 120C

No. 3    rotary ball
              flanged connection

In this connection, the flow is indicated by a ball rotating underneath the sight glass.

  • extraordinary robust industrial construction, for only the ball is moved and no bearings are necessary
  • vertical or horizontal installation is possible
  • using a PTFE-ball and high-grade housing material, the chemical durability is extraordinary
  • no flow blockage if installed into the wrong mounting direction
  • housing material: steel, high-quality steel, salt-water-proofed duplex material
  • nominal sizes: DN15 to DN150
  • working range (fluids): 10 flow quantities from 30L/hr to 450.000L/hr
  • maximum nominal pressure: PN16 according to DIN 2633 or PN40 to DIN 2635
  • maximum operating temperature: 120C