Main Components Materials
| Item | Name | Materials |
| 1 | Valve body | Ductile iron QT450-10 |
| 2 | Valve cover | Ductile iron QT450-10 |
| 3 | Valve clack | Ductile iron +EPDM |
| 4 | Sealing ring | EPDM |
| 5 | Bolt | Galvanized carbon steel/Stainless steel |
Detailed Size of Main Parts
| Nominal Diameter | Nominal pressure | Size(mm) | |||
| DN | PN | ①D | L | H1 | H2 |
| 50 | 10/16 | 165 | 203 | 67.5 | 62 |
| 65 | 10/16 | 185 | 216 | 79 | 75 |
| 80 | 10/16 | 200 | 241 | 133 | 86 |
| 100 | 10/16 | 220 | 292 | 148 | 95 |
| 125 | 10/16 | 250 | 330 | 167.5 | 110 |
| 150 | 10/16 | 285 | 256 | 191.5 | 142 |
| 200 | 10/16 | 340 | 495 | 248 | 170 |
| 250 | 10/16 | 400 | 622 | 306 | 200 |
| 300 | 10/16 | 455 | 698 | 343 | 225 |
Product Features
Full-port design: It offers a 100% flow area to improve flow characteristics and reduce head loss. The non-restrictive flow path design, combined with the streamlined and smooth valve body contour, allows large solids to pass through, reducing the possibility of blockages.
Reinforced valve disc: The valve disc is integrally injection-molded, with a built-in steel plate and reinforced nylon structure, ensuring years of trouble-free performance. The hinge part of the rubber disc comes with a 25-year warranty for customers.
Spring plate accelerator: The unique stainless-steel spring plate accelerator closely follows the movement of the rubber disc, effectively speeding up the closing of the valve disc.
Two moving parts: The self-resetting rubber disc and the stainless-steel spring plate accelerator are the only two moving parts. There are no packings, mechanically-driven pins, or bearings.
V-type sealing structure: The synthetic reinforced rubber disc and the integral V-ring sealing design ensure stable sealing of the valve seat under both high and low pressures.
Arched top valve cover: The large-sized valve cover design enables the replacement of the rubber disc without removing the valve body from the pipeline. It provides space for flushing the valve disc, achieving a non-blocking function. There is a tapped port on the outside of the valve cover for installing an optional valve disc position indicator.
