Rotary weirs
made of stainless steel


Rotary weirs
made of stainless steel

Rotary weirs are used for the rapid emptying of filter basins in water treatment plants. The weir is opened quickly so that all dirt particles floating on the water surface can be removed. To prevent the filter sand from being flushed out, the rotary weir has an additional protective seal on the side cheeks. This ensures a very good sealing performance even at low operating pressure. The extremely solid lever system is characterised by high stability and also guarantees a long-lasting sealing function.

Data sheet

Rotary weirs – made of stainless steel

Details

Nominal size

  • max. 4000 mm × 300 mm (other sizes available on request)

Control

  • front
  • back

Seal

Control front side

  • Note profile seal in the frame
  • Stainless steel fixed hinge

Control rear side

  • Double lip profile seal on flap side made of waste water and UV resistant
    EPDM
  • Hinge made of EXTRA EPDM gasket to prevent filter sand washout

Regardless of the type of control

  • Additional EPDM flat seal to the side walls to prevent filter sand washout
  • Seal and wear parts replaceable

Material

  • Stainless steel 1.4301 (304) / 1.4404 (316L) / 1.4410 (507) / 1.4462 (318LN) / 1.4539 (904L)

Leak tightness class

  • Leakage better than tightness class 4 according to DIN EN 19569, part 4, table 1: max. 1 % of 0,05 l · s-1 · m-1 (for water pressure on the flap side)

Mounting types

  • Frame for setting in concrete
  • Frame for dowelling to the even building wall

Operate

Control front side

  • Stem pipe on the flap side

Control rear side

  • by means of stem pipe via rear-mounted deflection shaft(s)
  • all mechanical bearings made of bronze and outside the medium

Scope of delivery

  • Flap complete with all necessary fasteners and sealing material

Actuated by

  • Using push and pull rods via reversing shaft(s)
  • All mechanical bearings made of bronze and outside the medium

Actuated by actuators

  • E-Actuator, pneumatic actuation or hydraulic actuation mounted on swivel bracket stand. Optional: With BÜSCH weather protection roof Optional: BÜSCH BEA©servo stainless steel electric actuator
  • BÜSCH MOBITORQ electric or accu mobile actuators via square stem cap

Individual sizes are available on request.
Please contact our customer service via the contact form.

Sewage disposal

YOUR ADVANTAGES

QUICK & SAFE EMPTYING
e.g. of filter basins - no rinsing of the filter sand due to the additional BÜSCH seal of the side cheeks and the flap hinges
 
WATER PRESSURE INDEPENDENT SEALING PERFORMANCE
Tight even at low operating pressure due to the additional EXTRA seal
 
IMMEDIATELY READY FOR USE
Rotary weir is supplied complete with all necessary fastening elements (dowels & sealing material)
 
APPLICATIONS

Rotary weirs can be controlled from the front or rear, inside or outside the medium, with one or two actuators

FACTORY CERTIFICATE OPTIONAL

On request, factory certificate according to DIN EN 10204, 2.1, with indication of leakage rate according to DIN 19569, part 4

EASIEST ASSEMBLY
For rear-actuated rotary weirs, drilling templates are supplied for exact installation
 
PERFECT CORROSION PROTECTION
All welded stainless steel parts from our own pickling plant

We will be pleased to consult you.

Contact

Accessory

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