| Type of conn. | Cast bronze, Screwed type | Stainless steel, Screwed type | Stainless steel, Flanged type |
| Model | RD-40 | RD-41 | RD-41F |
| Size | 15 - 25 | ||
| Applicable fluid / temperature | Steam/Max. 220 Deg.C | ||
| Applicable primary pressure | Max. 1.0MPa | ||
| Adjustable secondary pressure | 0.02 - 0.8MPa | ||
| Maximum reducing rate | 20 : 1 | ||
| Minimum pressure differential across the disc | 0.02MPa | ||
| Materials(Body/Trim) | Body : Cast bronze | Body : Stainless steel | |
| Trim : Stainless steel | |||
| End connection | Screwed JIS Rc | Flanged JIS 10KRF | |