Expert since 1970
Penstock 4sides tight for manhole
1 – Scope of use:
Retention device to suit to round opening in manholes.
With open-closed function and intermediate adjustment, with sealing on both sides, upstream and downstream water pressure.
2 – Technical characteristics :
Frame with curved bottom U-profile to fit to the curved bottom manhole.
Frame mounted on to the concrete wall with removable extruded sealant gaskets fixed in the frame. Tightness through the sealant gaskets is achieved by wedges.
Sealing between the frame and the work is ensured by a self-adhesive rubber-foam gasket (supplied). Plate lifting by non-rising trapezoidal threaded rod.
3 – Dimensions – on request :
To suit DN 150 to DN 500.
Larger dimensions on demand.
4 – Types of drives :
- Drive mounted inside manhole type AS
- Drive mounted on headstock type AF
Material
The materials used in the basic version for the various equipment and accessories are as follows:
1 – Frame, plate, shaft extension, wall fixing bracket and headstock
| Steel- galvanized | (St-37) | DIN 1.0037 |
| Stainless Steel | (304) | DIN 1.4301 |
| Stainless Steel | (316TI) | DIN 1.4571 |
| Aluminium | (AlMg3) | DIN 3.3535 |
| Cast iron | (GG25) |
DIN GJL250
|
Other material on demand.
2 – Bolts and nuts
Stainless steel V4A
3 – Sealant gaskets
EPDM / APTK – Éthylène – Propylène – Terpolymère – Caoutchouc NBR – Acrylonitrile Butadiène
Rubber CR – Néoprène – Polychloroprène – Rubber.
4 – Threaded shaft, rod
| Stainless steel | (V2A) | DIN 1.4104 |
| Stainless steel | (V2A) | DIN 1.4301 |
| Stailess steel | (316TI) | DIN 1.4571 |
5 – Mother piece for shaft
Bronze – RG7 2.1090 – RG7 – Cu Sn 7 Zn Pb
6 – Compression and sliding shims
PA – Polyamide, PE – Polyéthylène, POM – Polyoxyméthylène
Bronze – RG7 2.1090 – RG7 – Cu Sn 7 Zn Pb
7 – Dowel – anchors
Stainless steel V4A ( approved)
All tailor-made solutions available