Precast concrete manhole PENSTOCK CHAMBERS

Marshalls CPM penstock chambers consist of a precast concrete chamber design that includes a pre-fitted penstock installed in either a 1200mm, 1500mm, 1800mm or 2100mm diameter one-piece chambers or a 2000mm, 2100mm, 2400mm, 2700mm or a 3000mm sectional precast chamber system. The Marshalls CPM one-piece chamber is fabricated using a base unit complying BS EN 1917:2002. The Off-Site Solution chamber has been designed to enable the contractor to install the flow control chamber in a fraction of time it takes using conventional methods.