Description
Dual Plate Check Valve is a wafer check valve with two spring-loaded half discs. The plates fold open around a central hinge pin and close quickly by spring force when flow stops; fast closing reduces water hammer.
Technical Specifications
| Size range | DN50 – DN350 |
|---|---|
| Connection | Wafer (between flanges) |
| Pressure rating | PN16 |
| Working temperature | -10 … +100 °C |
Materials
| Body | GGG-40.3 / GG-25 |
|---|---|
| Disc / plate | AISI 316 / AISI 304 / nickel aluminium bronze |
| Seat | NBR / EPDM |
| Spring | AISI 304 |
| Stem | AISI 416 |
Applications
- Hot water lines
- Cold water lines
- Liquid fuel lines
- Non-acidic, non-alkaline and non-flammable fluids
Key Features
- Light, short body saves space in large sizes
- Fast, quiet closing with spring-loaded plates
- Low pressure loss
Selection and Installation
Size a check valve by the flow rate, not only by the pipe size; in an oversized valve the disc cannot open fully and flutters. Install it with the arrow on the body pointing in the flow direction. A strainer upstream extends its service life.
See the product catalogue (PDF) for dimensions and weights.
For check valve types, selection criteria and FAQ, read our what is a check valve guide; see all models on our check valves page.
