HDPE Penstock type PRA-G
End valve in sewer systems, waste water treatment plants etc.
5 Mwc on- and off-seating pressure from bottom of invert.
higher pressures on request.
Door of PRA-G diameter 400 mm will be executed with 2 small profiles
Nut block is polyacetal (POM)
Note 1: if a rectangular penstock is required with a dimension in between a hundredfold in mm, the outside dimensions of a penstock with first coming hundredfold in mm will be followed.
For instance a penstock with opening dimensions 315 x 475 mm will follow the outside dimensions of a penstock with dimensions 400 x 500 mm (so X=400+300 and Y=2x500+400).
Note 2: Z measure is 100 mm for penstocks up to 1200 x 1200 mm, Z measure is 125 mm for penstocks starting from 1300 x 1300 mm.