| Model | RD-20L | RD-20M | RD-20H |
| Size | 15 - 25 | ||
| Applicable fluid | Water, liquids, air or gases | ||
| Applicable temperature | 5 - 60 Deg.C | ||
| Applicable primary pressure | Max. 2.0MPa | ||
| Adjustable secondary pressure | Spring range L : 0.02 - 0.12MPa, M : 0.1 - 0.3MPa, H : 0.25 - 0.5MPa | ||
| Maximum reducing rate | Water, liquids: 10 : 1 Air, gases: 20 : 1 | ||
| Minimum pressure differential across the disc | 0.05MPa | ||
| Materials | Body : Stainless steel Diaphragm and Disc : NBR | ||
| End connection | Screwed JIS Rc or Flanged JIS 10K RF | ||