ROUND OR RECTANGULAR PENSTOCK
Round or rectangular penstock to be wall-mounted or flanged, intended to prevent backflow and commonly installed at the end of a line, as a check valve. Flap gate.
Carbon or stainless steel fabricated construction, with tight sealing by means of an elastomer seal.
Available in a wide range of dimensions and for many different pressure heads.
May include a counterweight for adjustment and control of the opening.