- Direct from the manufacturer
Control penstock with integrated emergency overflow
Our control penstocks with integrated emergency overflow combine a defined discharge limitation with a project-specifically designed emergency overflow.
The TESACO solution is based on a full-featured stainless steel control penstock and is suitable as an alternative to classic orifice, discharge, and grid throttles.
For round manholes, too, the entire unit is pre-assembled at the factory and only needs to be attached to the structure on-site.
- How it works
Functionality
The control penstock limits the discharge through a defined opening of the penstock plate. The required throttle opening is determined based on nominal diameter, backwater height, and desired discharge volume.
If the water level rises above the defined backwater height, additional water is discharged via the integrated emergency overflow. The height of the emergency overflow is individually determined according to the desired overflow height.
For maintenance and cleaning work, the control penstock can be fully opened.
Digital planning aids
The following tools are available to you for planning and design:
Flow calculator
Determination of the required throttle opening based on nominal diameter, backwater height, and desired discharge volume.
Planning drawing PZ-R-M-006
Fillable PDF planning drawing for control penstocks with integrated emergency overflow in a round manhole. It shows the manhole adapter, control penstock, emergency overflow, crossbeam, and actuator and can be used directly as a basis for planning, inquiry, or order.
Performance features
- Stainless steel control penstock: Full-fledged control penstock with frame and slide plate made of stainless steel. Typical standard range DN150 to DN500, further nominal diameters on request.
- Adjustable throttling cross-section: The desired throttle opening is set via the slide plate. For maintenance and cleaning work, the slide can be fully opened or closed.
- Integrated emergency overflow: The emergency overflow is structurally integrated into the control penstock unit. The height of the emergency overflow is determined individually. The nominal diameter of the emergency overflow can also be adapted to the project.
- Completely pre-assembled unit: Manhole adapter, emergency overflow, control penstock, crossbar, and actuator are already fully pre-assembled at TESACO. The complete unit is delivered as a single piece and only needs to be attached to the intended manhole wall and sealed to the structure.
- EPDM seal: The slides are equipped with an EPDM seal as standard. The seal is replaceable and can also be replaced when installed, if necessary.
- Stainless steel 1.4301 or 1.4571: Depending on the project, materials 1.4301 and 1.4571 are available. Other materials such as 1.4404 are possible on request.
Operation via square nut
As standard, operation is via a square nut.
The operating square can be placed directly above the slide or on the crossbar. For greater installation depths, the operation can be extended using an additional rod up to the top edge of the structure or into a surface box.
Round manhole or straight concrete wall
The typical application is installation in round manholes with a suitable manhole adapter. Solutions for round manholes DN1000, DN1200, DN1500 and DN2000 are provided as standard.
Alternatively, the control penstock with integrated emergency overflow can also be used directly on a straight concrete wall.
Alternative to grid throttles
In tenders for throttle structures, grid throttles, orifice plate throttles or PE flow throttles are often specified for installation in round manholes.
TESACO offers an alternative solution made of stainless steel for such applications. Instead of a plastic flow throttle, a full-fledged control penstock, emergency overflow, manhole adapter, and actuator are matched to the structure as a complete unit.
If, for example, a REHAU RAUSIKKO grid throttle or “equivalent” is specified in a bill of quantities, TESACO can check and offer a suitable stainless steel version based on the bill of quantities text and the structure data.
Why TESACO?
Fast technical processing
Technical clarifications, quotations, and individual installation drawings can often be created on the same day.
Short delivery time
Control penstocks with integrated emergency overflow are available in approximately 4–6 weeks.
Technical support already in the planning phase
We support you in determining the throttle opening, setting the emergency overflow height, and coordinating the slide gate, manhole adapter, actuation, and structure geometry. If required, we can create a project-specific installation drawing as well as technical tender and bill of quantities texts.
Direct contact persons
Our satisfied customers
Request a quote now
A few details are sufficient for a quote:
- desired height of the emergency overflow
- nominal diameter of the outlet
- manhole diameter or wall geometry
- installation depth
- desired actuation
An existing structural drawing or the corresponding bill of quantities text facilitates coordination.
Even if a grid throttle, REHAU RAUSIKKO grid throttle, or a comparable flow throttle is specified, you can send us the documents directly for technical review.
Your contact persons: Hasan Catalano & David Jung
- +49 (0) 64 30 – 61 10 30
- Mail: info@tesaco.de