The PGZ cast iron arch gate is a flow control device used in hydraulic engineering, made of cast iron material, featuring corrosion resistance and excellent water-sealing performance. ?
Structural Features?
?Material?: Mostly made of HT200 gray cast iron or ductile iron, complying with CJ/T3006-92 and DL/T5018-2004 standards. ?
Design?: Utilizes a 60-degree central angle arch structure to optimize pressure-bearing performance; the gate plate is surrounded by a cast iron frame and reinforced with transverse stiffeners to enhance rigidity. ?
Sealing Technology?: Employs inclined iron or copper alloy facings, achieving bidirectional water sealing through a wedge device. Forward seepage can reach 0.03-0.07 L/m·s, while reverse seepage is slightly higher. ?
Function and Application?
?Purpose?: Mainly used in small to medium-sized hydroelectric projects, municipal water supply and drainage, and farmland irrigation. It regulates water levels or cuts off flow by driving the gate plate up and down via a hoist. ?
Performance?: Capable of withstanding high water pressure and reverse flow impact, with a long service life (normal head: 1-6 meters) and low maintenance costs (requires regular lubrication and anti-corrosion treatment). ?
Installation Requirements?
Must be hoisted entirely into the slot, with secondary concrete pouring to adjust the sealing surface gap to within 0.1mm. ?
During installation, residual mortar between components such as the gate plate and frame must be cleared to avoid affecting operation.