Steel clapet valve for retangular section

Steel clapet valve (galvanised-stainless steel AISI 304) with rectangular or squared section ; compact esecution and sealing capacity ; helds in EPDM ; hydraulic load max 5 m ; on all sides ; on request counterweight system for adjusting on the field; frame with self-supporting structure for wall fixing with chemical dowels or anchoring hooks for grouting on wall.