XL4 penstocks
The greatest ones

XL4 penstocks are the greatest in our product portfolio. They withstand the highest demands even in enormous sizes. The XL4 can be supplied in all rectangular and semicircular intermediate sizes up to 4000 × 4000 mm. The pre-stressed seal gives this large penstock superior sealing quality, both with pressure in and against the sealing direction.

XL4

XL4

Large penstock with rectangular opening, 4-sided sealing

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XL4 semicircular

XL4 semicircular

Large penstock with semicircular opening, 4-sided sealing

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XL4 lowering type penstock

XL4 lowering type penstock

Large lowering type penstock, 4-sided sealing

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