XL3 Channel penstock


Channel penstock made of stainless steel

Size: 150 x 150 mm to 2000 x 2000 mm; Pressure stage on both sides possible
Size: 2000 x 2000 mm to 4000 x 4500 mm; Pressure stage on the front side

Big channel penstocks are exposed to high forces. The high stability and reliability of the XL3 channel penstock are guarantor for a trouble-free and satefy operation of your plant.

Due to the pre-stressed sealing gives the XL3 channel penstock an extraordinary sealing performance in onseating conditions as well as in off-saeting conditions. The light, but warp resistant plate and the frame, which is used as sealing surface gives the XL this outstanding sealing performance. The sealing is located on the plate. A necessary change of the sealing is anytime possible by pulling out the plate.

The XL3 is available in every intermediate size up to 4000 x 4000 mm. The XL3 is also available as a lowering type.

Areas of application

  • Municipality or industrial service water and sewage treatment plants
  • Chemical industry
  • Rain storage reservoirs
  • Flood protection
  • Power plants
  • For strictly environmental constraints


  • Frame: stainless steel SS304 or 316Ti
  • Plate: stainless steel SS304 or 316 Ti
  • Sealing: EPDM, wastewater-resistant or NBR
  • Spindle: stainless steel SS304 316Ti
  • Stem nut: GC-CuSn 12, seawater-resistant bronze
  • Fixing material: stainless steel SS316 Ti (in the attached dowelling-set)

Other materials available on request.


  • Leakage rate according to DIN EN 19569, Part 4, Table 1:
    • Pressure on front side: 0.05 to 0.1 l/s/m (leaktightness class 3)
    • Pressure on rear side: 0.1 to 0.3 l/s/m (leaktightness class 2)
  • XM4 channel penstock Leakage Rate:
    • Pressure on front side: maximum 1 % from 0.05 to 0,1 l/s/m (leaktightness class 3)
    • Pressure on rear side: maximum 5 % from 0.1 to 0.3 l/s/m (leaktightness class 2)

Users advantage

  • Fast and easy assembling with only few dowels
  • Without any added adjustment at the penstock
  • Maintenance-free
  • Self-cleaning stem nut
  • Durable operational reliability
  • High process safety due to an outstanding sealing performance
  • All welded parts with perfect corrosion protection from our own pickling line
  • No crack in the base of the embedded fitting


  • Handwheel on transverse yoke
  • Lateral actuation with gearbox
  • BÜSCH control key all-in-one via square cap
  • Mobile electric drive unit, BÜSCH MOBITORQ, via square cap
  • Electric drive unit assembled on transverse yoke
  • BÜSCH BEA stainless steel electric drive
  • Pneumatic drive unit assembled on transverse yoke
  • Hydraulic drive unit assembled on transverse yoke

All actuations available as full package.


  • MAS actuation packages (see MAS-program)
  • MOBITORQ mobile actuator (see MOBITORQ-program)
  • Operating key (for example All-in-One actuation key)
  • perma-lubrication