The document describes a wafer-type non-return (check) valve that is sandwiched between flanges. The valve is equipped with a spring and can be installed in any position. The self-centering valve body ensures accurate installation. It is suitable for liquids, gases, and vapors. The Pressure Equipment Directive (PED) classification should be observed. The document also provides information on the temperature range of the valve disc gasket and the chemical suitability of the valve for different liquids.
The GESTRA RK 76 is a wafer-type non-return valve designed to be sandwiched between flanges. It features a spring design suitable for installation in any position, or a springless version for vertical lines with upward flow. The valve body utilizes a self-centering spiral design to ensure accurate installation and is applicable for liquids, gases, and vapours.
| Valve Type | Wafer-type non-return valve |
|---|---|
| Nominal Size | DN 15-100 |
| Pressure Ratings | PN 6/10/16/25/40, ASME Class 150/300 |
| Body Material | Chromium steel 1.4107 / ASTM A217 CA15 |
| Disc Material | Austenitic stainless steel 1.4571 |
| Sealing Materials | Metal-to-metal, PTFE, EPDM, FPM |
| Temperature Range (Metal-to-metal) | -10 to 200 °C |
| Leakage Rate | DIN EN 12266, Class D |
Yes, the valve with a spring is suitable for installation in any position.
No, the version without a spring is only for vertical lines with upward flow.
The valve meets DIN EN 12266, Class D for leakage rate.